UI: Added pause/background/volume related options

Core/Console.cpp

@@ -36,6 +36,8 @@
 Console::Console()
 {
 	_settings.reset(new EmuSettings());
+	KeyManager::SetSettings(_settings.get());
+
 	_paused = false;
 	_pauseOnNextFrame = false;
 	_stopFlag = false;

Core/EmuSettings.cpp

@@ -270,3 +270,8 @@ void EmuSettings::InitializeRam(void* data, uint32_t length)
 			break;
 	}
 }
+
+bool EmuSettings::IsInputEnabled()
+{
+	return !CheckFlag(EmulationFlags::InBackground) || _preferences.AllowBackgroundInput;
+}

Core/EmuSettings.h

@@ -68,4 +68,6 @@ public:
 	void SetDebuggerFlag(DebuggerFlags flag, bool enabled);
 	bool CheckDebuggerFlag(DebuggerFlags flags);
 	void InitializeRam(void* data, uint32_t length);
+
+	bool IsInputEnabled();
 };

Core/KeyManager.cpp

@@ -9,6 +9,7 @@ IKeyManager* KeyManager::_keyManager = nullptr;
 MousePosition KeyManager::_mousePosition = { 0, 0 };
 atomic<int16_t> KeyManager::_xMouseMovement;
 atomic<int16_t> KeyManager::_yMouseMovement;
+EmuSettings* KeyManager::_settings = nullptr;
 
 void KeyManager::RegisterKeyManager(IKeyManager* keyManager)
 {
@@ -24,10 +25,15 @@ void KeyManager::RefreshKeyState()
 	}
 }
 
+void KeyManager::SetSettings(EmuSettings *settings)
+{
+	_settings = settings;
+}
+
 bool KeyManager::IsKeyPressed(uint32_t keyCode)
 {
 	if(_keyManager != nullptr) {
-		return _keyManager->IsKeyPressed(keyCode);
+		return _settings->IsInputEnabled() && _keyManager->IsKeyPressed(keyCode);
 	}
 	return false;
 }
@@ -35,8 +41,7 @@ bool KeyManager::IsKeyPressed(uint32_t keyCode)
 bool KeyManager::IsMouseButtonPressed(MouseButton button)
 {
 	if(_keyManager != nullptr) {
-		//TODO return _settings->InputEnabled() && 
+		return _settings->IsInputEnabled() && _keyManager->IsMouseButtonPressed(button);
-		return _keyManager->IsMouseButtonPressed(button);
 	}
 	return false;
 }

Core/KeyManager.h

@@ -3,6 +3,7 @@
 #include "IKeyManager.h"
 
 class Console;
+class EmuSettings;
 
 class KeyManager
 {
@@ -11,9 +12,11 @@ private:
 	static MousePosition _mousePosition;
 	static atomic<int16_t> _xMouseMovement;
 	static atomic<int16_t> _yMouseMovement;
+	static EmuSettings* _settings;
 
 public:
 	static void RegisterKeyManager(IKeyManager* keyManager);
+	static void SetSettings(EmuSettings* settings);
 
 	static void RefreshKeyState();
 	static bool IsKeyPressed(uint32_t keyCode);

Core/SettingTypes.h

@@ -6,7 +6,9 @@ enum class EmulationFlags
 {
 	Turbo = 1,
 	Rewind = 2,
-	MaximumSpeed = 4
+	TurboOrRewind = 3,
+	MaximumSpeed = 4,
+	InBackground = 8
 };
 
 enum class ScaleFilterType
@@ -271,6 +273,7 @@ struct PreferencesConfig
 	bool ShowGameTimer = false;
 	bool ShowDebugInfo = false;
 	bool DisableOsd = false;
+	bool AllowBackgroundInput = false;
 
 	uint32_t RewindBufferSize = 30;
 

Core/SoundMixer.cpp

@@ -55,10 +55,21 @@ void SoundMixer::PlayAudioBuffer(int16_t* samples, uint32_t sampleCount)
 		ProcessEqualizer(samples, sampleCount);
 	}
 
-	if(cfg.MasterVolume < 100) {
+	uint32_t masterVolume = cfg.MasterVolume;
+	if(_console->GetSettings()->CheckFlag(EmulationFlags::InBackground)) {
+		if(cfg.MuteSoundInBackground) {
+			masterVolume = 0;
+		} else if(cfg.ReduceSoundInBackground) {
+			masterVolume = cfg.VolumeReduction == 100 ? 0 : masterVolume * (100 - cfg.VolumeReduction) / 100;
+		}
+	} else if(cfg.ReduceSoundInFastForward && _console->GetSettings()->CheckFlag(EmulationFlags::TurboOrRewind)) {
+		masterVolume = cfg.VolumeReduction == 100 ? 0 : masterVolume * (100 - cfg.VolumeReduction) / 100;
+	}
+
+	if(masterVolume < 100) {
 		//Apply volume if not using the default value
 		for(uint32_t i = 0; i < sampleCount * 2; i++) {
-			samples[i] = (int32_t)samples[i] * (int32_t)cfg.MasterVolume / 100;
+			samples[i] = (int32_t)samples[i] * (int32_t)masterVolume / 100;
 		}
 	}
 

InteropDLL/ConfigApiWrapper.cpp

@@ -46,6 +46,11 @@ extern "C" {
 		return _returnString.c_str();
 	}
 
+	DllExport void __stdcall SetEmulationFlag(EmulationFlags flag, bool enabled)
+	{
+		_console->GetSettings()->SetFlagState(flag, enabled);
+	}
+
 	DllExport void __stdcall SetDebuggerFlag(DebuggerFlags flag, bool enabled)
 	{
 		_console->GetSettings()->SetDebuggerFlag(flag, enabled);

UI/Config/PreferencesConfig.cs

@@ -17,6 +17,11 @@ namespace Mesen.GUI.Config
 		public bool SingleInstance = true;
 		public bool AutoLoadPatches = true;
 
+		public bool PauseWhenInBackground = false;
+		public bool PauseWhenInMenusAndConfig = false;
+		public bool PauseWhenInDebuggingTools = false;
+		public bool AllowBackgroundInput = false;
+
 		public bool AssociateRomFiles = false;
 		public bool AssociateMsmFiles = false;
 		public bool AssociateMssFiles = false;
@@ -155,6 +160,7 @@ namespace Mesen.GUI.Config
 				ShowGameTimer = ShowGameTimer,
 				ShowDebugInfo = ShowDebugInfo,
 				DisableOsd = DisableOsd,
+				AllowBackgroundInput = AllowBackgroundInput,
 				SaveFolderOverride = OverrideSaveDataFolder ? SaveDataFolder : "",
 				SaveStateFolderOverride = OverrideSaveStateFolder ? SaveStateFolder : "",
 				ScreenshotFolderOverride = OverrideScreenshotFolder ? ScreenshotFolder : "",
@@ -170,6 +176,7 @@ namespace Mesen.GUI.Config
 		[MarshalAs(UnmanagedType.I1)] public bool ShowGameTimer;
 		[MarshalAs(UnmanagedType.I1)] public bool ShowDebugInfo;
 		[MarshalAs(UnmanagedType.I1)] public bool DisableOsd;
+		[MarshalAs(UnmanagedType.I1)] public bool AllowBackgroundInput;
 
 		public UInt32 RewindBufferSize;
 

UI/Forms/BaseConfigForm.cs

@@ -34,7 +34,7 @@ namespace Mesen.GUI.Forms
 			UpdateUI();
 		}
 
-		protected override bool IsConfigForm { get { return true; } }
+		public override bool IsConfigForm { get { return true; } }
 
 		protected void UpdateUI()
 		{

UI/Forms/BaseForm.cs

@@ -21,63 +21,20 @@ namespace Mesen.GUI.Forms
 		private bool _iconSet = false;
 		protected int _inMenu = 0;
 		private ctrlTooltip ctrlTooltip;
-		private static Timer _tmrUpdateBackground;
-		//private static bool _needResume = false;
 
 		public BaseForm()
 		{
 			InitializeComponent();
 		}
 
-		protected virtual bool IsConfigForm { get { return false; } }
+		public virtual bool IsConfigForm { get { return false; } }
+		public bool InMenu { get { return _inMenu > 0; } }
 
 		public static ctrlTooltip GetPopupTooltip(Form form)
 		{
 			return (form as BaseForm).ctrlTooltip;
 		}
 
-		public static void StartBackgroundTimer()
-		{
-			_tmrUpdateBackground = new Timer();
-			_tmrUpdateBackground.Start();
-			_tmrUpdateBackground.Tick += tmrUpdateBackground_Tick;
-		}
-
-		public static void StopBackgroundTimer()
-		{
-			_tmrUpdateBackground?.Stop();
-		}
-
-		private static void tmrUpdateBackground_Tick(object sender, EventArgs e)
-		{
-			/*Form focusedForm = null;
-			foreach(Form form in Application.OpenForms) {
-				if(form.ContainsFocus) {
-					focusedForm = form;
-					break;
-				}
-			}
-
-			bool needPause = focusedForm == null && ConfigManager.Config.PreferenceInfo.PauseWhenInBackground;
-			if(focusedForm != null) {
-				needPause |= ConfigManager.Config.PreferenceInfo.PauseWhenInMenusAndConfig && focusedForm is BaseForm && (((BaseForm)focusedForm)._inMenu > 0 || ((BaseForm)focusedForm).IsConfigForm);
-				needPause |= ConfigManager.Config.PreferenceInfo.PauseWhenInMenusAndConfig && !(focusedForm is BaseInputForm) && !focusedForm.GetType().FullName.Contains("Debugger");
-				needPause |= ConfigManager.Config.PreferenceInfo.PauseWhenInDebuggingTools && focusedForm.GetType().FullName.Contains("Debugger");
-			}
-
-			if(needPause) {
-				if(!EmuApi.IsPaused(EmuApi.ConsoleId.Master)) {
-					_needResume = true;
-					EmuApi.Pause(EmuApi.ConsoleId.Master);
-				}
-			} else if(_needResume) {
-				EmuApi.Resume(EmuApi.ConsoleId.Master);
-				_needResume = false;
-			}
-
-			EmuApi.SetFlag(EmulationFlags.InBackground, focusedForm == null);*/
-		}
-
 		protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
 		{
 			bool processed = false;

UI/Forms/Config/frmAudioConfig.Designer.cs

@@ -93,6 +93,7 @@
 			// 
 			this.baseConfigPanel.Location = new System.Drawing.Point(0, 378);
 			this.baseConfigPanel.Size = new System.Drawing.Size(492, 29);
+			this.baseConfigPanel.TabIndex = 4;
 			// 
 			// tabControl1
 			// 
@@ -163,7 +164,6 @@
 			this.lblVolumeReductionSettings.Size = new System.Drawing.Size(94, 13);
 			this.lblVolumeReductionSettings.TabIndex = 24;
 			this.lblVolumeReductionSettings.Text = "Volume Reduction";
-			this.lblVolumeReductionSettings.Visible = false;
 			// 
 			// chkEnableAudio
 			// 
@@ -340,7 +340,6 @@
 			this.tableLayoutPanel8.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
 			this.tableLayoutPanel8.Size = new System.Drawing.Size(453, 81);
 			this.tableLayoutPanel8.TabIndex = 25;
-			this.tableLayoutPanel8.Visible = false;
 			// 
 			// chkReduceSoundInBackground
 			// 
@@ -351,6 +350,7 @@
 			this.chkReduceSoundInBackground.TabIndex = 13;
 			this.chkReduceSoundInBackground.Text = "Reduce when in background";
 			this.chkReduceSoundInBackground.UseVisualStyleBackColor = true;
+			this.chkReduceSoundInBackground.CheckedChanged += new System.EventHandler(this.chkReduceVolume_CheckedChanged);
 			// 
 			// chkReduceSoundInFastForward
 			// 
@@ -361,6 +361,7 @@
 			this.chkReduceSoundInFastForward.TabIndex = 16;
 			this.chkReduceSoundInFastForward.Text = "Reduce when fast forwarding or rewinding";
 			this.chkReduceSoundInFastForward.UseVisualStyleBackColor = true;
+			this.chkReduceSoundInFastForward.CheckedChanged += new System.EventHandler(this.chkReduceVolume_CheckedChanged);
 			// 
 			// trkVolumeReduction
 			// 
@@ -388,6 +389,7 @@
 			this.chkMuteSoundInBackground.TabIndex = 18;
 			this.chkMuteSoundInBackground.Text = "Mute sound when in background";
 			this.chkMuteSoundInBackground.UseVisualStyleBackColor = true;
+			this.chkMuteSoundInBackground.CheckedChanged += new System.EventHandler(this.chkMuteWhenInBackground_CheckedChanged);
 			// 
 			// trkMaster
 			// 
@@ -937,6 +939,7 @@
 			this.tpgAdvanced.ResumeLayout(false);
 			this.tableLayoutPanel1.ResumeLayout(false);
 			this.ResumeLayout(false);
+			this.PerformLayout();
 
 		}
 

UI/Forms/Config/frmAudioConfig.cs

@@ -83,5 +83,21 @@ namespace Mesen.GUI.Forms.Config
 		{
 			tlpEqualizer.Enabled = chkEnableEqualizer.Checked;
 		}
+
+		private void chkMuteWhenInBackground_CheckedChanged(object sender, EventArgs e)
+		{
+			UpdateVolumeOptions();
+		}
+
+		private void chkReduceVolume_CheckedChanged(object sender, EventArgs e)
+		{
+			UpdateVolumeOptions();
+		}
+
+		private void UpdateVolumeOptions()
+		{
+			chkReduceSoundInBackground.Enabled = !chkMuteSoundInBackground.Checked;
+			trkVolumeReduction.Enabled = chkReduceSoundInFastForward.Checked || (chkReduceSoundInBackground.Checked && chkReduceSoundInBackground.Enabled);
+		}
 	}
 }

UI/Forms/Config/frmGetKey.cs

@@ -38,7 +38,7 @@ namespace Mesen.GUI.Forms.Config
 			InputApi.DisableAllKeys(true);
 		}
 
-		protected override bool IsConfigForm { get { return true; } }
+		public override bool IsConfigForm { get { return true; } }
 
 		protected override void OnFormClosing(FormClosingEventArgs e)
 		{

UI/Forms/Config/frmPreferences.Designer.cs

@@ -76,6 +76,11 @@
 			this.lblDataLocation = new System.Windows.Forms.Label();
 			this.tpgAdvanced = new System.Windows.Forms.TabPage();
 			this.tableLayoutPanel1 = new System.Windows.Forms.TableLayoutPanel();
+			this.lblAdvancedMisc = new System.Windows.Forms.Label();
+			this.flowLayoutPanel6 = new System.Windows.Forms.FlowLayoutPanel();
+			this.lblRewind = new System.Windows.Forms.Label();
+			this.nudRewindBufferSize = new Mesen.GUI.Controls.MesenNumericUpDown();
+			this.lblRewindMinutes = new System.Windows.Forms.Label();
 			this.chkDisplayTitleBarInfo = new System.Windows.Forms.CheckBox();
 			this.chkShowGameTimer = new System.Windows.Forms.CheckBox();
 			this.chkShowFrameCounter = new System.Windows.Forms.CheckBox();
@@ -85,11 +90,13 @@
 			this.chkAlwaysOnTop = new System.Windows.Forms.CheckBox();
 			this.chkShowFps = new System.Windows.Forms.CheckBox();
 			this.chkShowDebugInfo = new System.Windows.Forms.CheckBox();
-			this.flowLayoutPanel6 = new System.Windows.Forms.FlowLayoutPanel();
+			this.lblPauseBackgroundSettings = new System.Windows.Forms.Label();
-			this.lblRewind = new System.Windows.Forms.Label();
+			this.flowLayoutPanel8 = new System.Windows.Forms.FlowLayoutPanel();
-			this.nudRewindBufferSize = new Mesen.GUI.Controls.MesenNumericUpDown();
+			this.lblPauseIn = new System.Windows.Forms.Label();
-			this.lblRewindMinutes = new System.Windows.Forms.Label();
+			this.chkPauseWhenInBackground = new System.Windows.Forms.CheckBox();
-			this.lblAdvancedMisc = new System.Windows.Forms.Label();
+			this.chkPauseInMenuAndConfig = new System.Windows.Forms.CheckBox();
+			this.chkPauseInDebugger = new System.Windows.Forms.CheckBox();
+			this.chkAllowBackgroundInput = new System.Windows.Forms.CheckBox();
 			this.tabMain.SuspendLayout();
 			this.tpgGeneral.SuspendLayout();
 			this.tlpMain.SuspendLayout();
@@ -109,6 +116,7 @@
 			this.tpgAdvanced.SuspendLayout();
 			this.tableLayoutPanel1.SuspendLayout();
 			this.flowLayoutPanel6.SuspendLayout();
+			this.flowLayoutPanel8.SuspendLayout();
 			this.SuspendLayout();
 			// 
 			// baseConfigPanel
@@ -145,23 +153,29 @@
 			// 
 			this.tlpMain.ColumnCount = 1;
 			this.tlpMain.ColumnStyles.Add(new System.Windows.Forms.ColumnStyle());
-			this.tlpMain.Controls.Add(this.chkAutoHideMenu, 0, 5);
+			this.tlpMain.Controls.Add(this.chkAllowBackgroundInput, 0, 5);
+			this.tlpMain.Controls.Add(this.flowLayoutPanel8, 0, 4);
+			this.tlpMain.Controls.Add(this.lblPauseBackgroundSettings, 0, 3);
+			this.tlpMain.Controls.Add(this.chkAutoHideMenu, 0, 8);
 			this.tlpMain.Controls.Add(this.chkSingleInstance, 0, 2);
 			this.tlpMain.Controls.Add(this.chkAutomaticallyCheckForUpdates, 0, 1);
 			this.tlpMain.Controls.Add(this.flowLayoutPanel2, 0, 0);
-			this.tlpMain.Controls.Add(this.lblMiscSettings, 0, 3);
+			this.tlpMain.Controls.Add(this.lblMiscSettings, 0, 6);
-			this.tlpMain.Controls.Add(this.chkAutoLoadPatches, 0, 4);
+			this.tlpMain.Controls.Add(this.chkAutoLoadPatches, 0, 7);
-			this.tlpMain.Controls.Add(this.tableLayoutPanel5, 0, 7);
+			this.tlpMain.Controls.Add(this.tableLayoutPanel5, 0, 10);
 			this.tlpMain.Dock = System.Windows.Forms.DockStyle.Fill;
 			this.tlpMain.Location = new System.Drawing.Point(3, 3);
 			this.tlpMain.Name = "tlpMain";
-			this.tlpMain.RowCount = 8;
+			this.tlpMain.RowCount = 11;
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
+			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
+			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
+			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
 			this.tlpMain.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tlpMain.Size = new System.Drawing.Size(534, 383);
@@ -170,7 +184,7 @@
 			// chkAutoHideMenu
 			// 
 			this.chkAutoHideMenu.AutoSize = true;
-			this.chkAutoHideMenu.Location = new System.Drawing.Point(13, 118);
+			this.chkAutoHideMenu.Location = new System.Drawing.Point(13, 186);
 			this.chkAutoHideMenu.Margin = new System.Windows.Forms.Padding(13, 3, 3, 3);
 			this.chkAutoHideMenu.Name = "chkAutoHideMenu";
 			this.chkAutoHideMenu.Size = new System.Drawing.Size(158, 17);
@@ -233,7 +247,7 @@
 			this.lblMiscSettings.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
 			this.lblMiscSettings.AutoSize = true;
 			this.lblMiscSettings.ForeColor = System.Drawing.SystemColors.GrayText;
-			this.lblMiscSettings.Location = new System.Drawing.Point(0, 79);
+			this.lblMiscSettings.Location = new System.Drawing.Point(0, 147);
 			this.lblMiscSettings.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
 			this.lblMiscSettings.Name = "lblMiscSettings";
 			this.lblMiscSettings.Size = new System.Drawing.Size(73, 13);
@@ -243,7 +257,7 @@
 			// chkAutoLoadPatches
 			// 
 			this.chkAutoLoadPatches.AutoSize = true;
-			this.chkAutoLoadPatches.Location = new System.Drawing.Point(13, 95);
+			this.chkAutoLoadPatches.Location = new System.Drawing.Point(13, 163);
 			this.chkAutoLoadPatches.Margin = new System.Windows.Forms.Padding(13, 3, 3, 3);
 			this.chkAutoLoadPatches.Name = "chkAutoLoadPatches";
 			this.chkAutoLoadPatches.Size = new System.Drawing.Size(198, 17);
@@ -296,7 +310,7 @@
 			this.tpgShortcuts.Location = new System.Drawing.Point(4, 22);
 			this.tpgShortcuts.Name = "tpgShortcuts";
 			this.tpgShortcuts.Padding = new System.Windows.Forms.Padding(3);
-			this.tpgShortcuts.Size = new System.Drawing.Size(540, 389);
+			this.tpgShortcuts.Size = new System.Drawing.Size(540, 418);
 			this.tpgShortcuts.TabIndex = 7;
 			this.tpgShortcuts.Text = "Shortcut Keys";
 			this.tpgShortcuts.UseVisualStyleBackColor = true;
@@ -306,7 +320,7 @@
 			this.ctrlEmulatorShortcuts.Dock = System.Windows.Forms.DockStyle.Fill;
 			this.ctrlEmulatorShortcuts.Location = new System.Drawing.Point(3, 3);
 			this.ctrlEmulatorShortcuts.Name = "ctrlEmulatorShortcuts";
-			this.ctrlEmulatorShortcuts.Size = new System.Drawing.Size(534, 383);
+			this.ctrlEmulatorShortcuts.Size = new System.Drawing.Size(534, 412);
 			this.ctrlEmulatorShortcuts.TabIndex = 0;
 			// 
 			// tpgFiles
@@ -315,7 +329,7 @@
 			this.tpgFiles.Location = new System.Drawing.Point(4, 22);
 			this.tpgFiles.Name = "tpgFiles";
 			this.tpgFiles.Padding = new System.Windows.Forms.Padding(3);
-			this.tpgFiles.Size = new System.Drawing.Size(540, 389);
+			this.tpgFiles.Size = new System.Drawing.Size(540, 418);
 			this.tpgFiles.TabIndex = 2;
 			this.tpgFiles.Text = "Folders/Files";
 			this.tpgFiles.UseVisualStyleBackColor = true;
@@ -336,7 +350,7 @@
 			this.tableLayoutPanel6.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tableLayoutPanel6.RowStyles.Add(new System.Windows.Forms.RowStyle());
 			this.tableLayoutPanel6.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
-			this.tableLayoutPanel6.Size = new System.Drawing.Size(534, 383);
+			this.tableLayoutPanel6.Size = new System.Drawing.Size(534, 412);
 			this.tableLayoutPanel6.TabIndex = 13;
 			// 
 			// grpPathOverrides
@@ -743,7 +757,7 @@
 			this.tpgAdvanced.Location = new System.Drawing.Point(4, 22);
 			this.tpgAdvanced.Name = "tpgAdvanced";
 			this.tpgAdvanced.Padding = new System.Windows.Forms.Padding(3);
-			this.tpgAdvanced.Size = new System.Drawing.Size(540, 389);
+			this.tpgAdvanced.Size = new System.Drawing.Size(540, 418);
 			this.tpgAdvanced.TabIndex = 1;
 			this.tpgAdvanced.Text = "Advanced";
 			this.tpgAdvanced.UseVisualStyleBackColor = true;
@@ -779,9 +793,85 @@
 			this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
 			this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Percent, 100F));
 			this.tableLayoutPanel1.RowStyles.Add(new System.Windows.Forms.RowStyle(System.Windows.Forms.SizeType.Absolute, 20F));
-			this.tableLayoutPanel1.Size = new System.Drawing.Size(534, 383);
+			this.tableLayoutPanel1.Size = new System.Drawing.Size(534, 412);
 			this.tableLayoutPanel1.TabIndex = 0;
 			// 
+			// lblAdvancedMisc
+			// 
+			this.lblAdvancedMisc.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+			this.lblAdvancedMisc.AutoSize = true;
+			this.lblAdvancedMisc.ForeColor = System.Drawing.SystemColors.GrayText;
+			this.lblAdvancedMisc.Location = new System.Drawing.Point(0, 208);
+			this.lblAdvancedMisc.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
+			this.lblAdvancedMisc.Name = "lblAdvancedMisc";
+			this.lblAdvancedMisc.Size = new System.Drawing.Size(73, 13);
+			this.lblAdvancedMisc.TabIndex = 36;
+			this.lblAdvancedMisc.Text = "Misc. Settings";
+			// 
+			// flowLayoutPanel6
+			// 
+			this.flowLayoutPanel6.Controls.Add(this.lblRewind);
+			this.flowLayoutPanel6.Controls.Add(this.nudRewindBufferSize);
+			this.flowLayoutPanel6.Controls.Add(this.lblRewindMinutes);
+			this.flowLayoutPanel6.Dock = System.Windows.Forms.DockStyle.Top;
+			this.flowLayoutPanel6.Location = new System.Drawing.Point(10, 224);
+			this.flowLayoutPanel6.Margin = new System.Windows.Forms.Padding(10, 3, 0, 0);
+			this.flowLayoutPanel6.Name = "flowLayoutPanel6";
+			this.flowLayoutPanel6.Size = new System.Drawing.Size(524, 23);
+			this.flowLayoutPanel6.TabIndex = 35;
+			// 
+			// lblRewind
+			// 
+			this.lblRewind.Anchor = System.Windows.Forms.AnchorStyles.Left;
+			this.lblRewind.AutoSize = true;
+			this.lblRewind.Location = new System.Drawing.Point(3, 4);
+			this.lblRewind.Name = "lblRewind";
+			this.lblRewind.Size = new System.Drawing.Size(142, 13);
+			this.lblRewind.TabIndex = 3;
+			this.lblRewind.Text = "Keep rewind data for the last";
+			// 
+			// nudRewindBufferSize
+			// 
+			this.nudRewindBufferSize.Anchor = System.Windows.Forms.AnchorStyles.Left;
+			this.nudRewindBufferSize.DecimalPlaces = 0;
+			this.nudRewindBufferSize.Increment = new decimal(new int[] {
+            1,
+            0,
+            0,
+            0});
+			this.nudRewindBufferSize.Location = new System.Drawing.Point(148, 0);
+			this.nudRewindBufferSize.Margin = new System.Windows.Forms.Padding(0);
+			this.nudRewindBufferSize.Maximum = new decimal(new int[] {
+            900,
+            0,
+            0,
+            0});
+			this.nudRewindBufferSize.MaximumSize = new System.Drawing.Size(10000, 20);
+			this.nudRewindBufferSize.Minimum = new decimal(new int[] {
+            0,
+            0,
+            0,
+            0});
+			this.nudRewindBufferSize.MinimumSize = new System.Drawing.Size(0, 21);
+			this.nudRewindBufferSize.Name = "nudRewindBufferSize";
+			this.nudRewindBufferSize.Size = new System.Drawing.Size(42, 21);
+			this.nudRewindBufferSize.TabIndex = 1;
+			this.nudRewindBufferSize.Value = new decimal(new int[] {
+            30,
+            0,
+            0,
+            0});
+			// 
+			// lblRewindMinutes
+			// 
+			this.lblRewindMinutes.Anchor = System.Windows.Forms.AnchorStyles.Left;
+			this.lblRewindMinutes.AutoSize = true;
+			this.lblRewindMinutes.Location = new System.Drawing.Point(193, 4);
+			this.lblRewindMinutes.Name = "lblRewindMinutes";
+			this.lblRewindMinutes.Size = new System.Drawing.Size(175, 13);
+			this.lblRewindMinutes.TabIndex = 2;
+			this.lblRewindMinutes.Text = "minutes (Memory Usage ≈5MB/min)";
+			// 
 			// chkDisplayTitleBarInfo
 			// 
 			this.chkDisplayTitleBarInfo.AutoSize = true;
@@ -883,81 +973,82 @@
 			this.chkShowDebugInfo.Text = "Show debug information";
 			this.chkShowDebugInfo.UseVisualStyleBackColor = true;
 			// 
-			// flowLayoutPanel6
+			// lblPauseBackgroundSettings
 			// 
-			this.flowLayoutPanel6.Controls.Add(this.lblRewind);
+			this.lblPauseBackgroundSettings.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
-			this.flowLayoutPanel6.Controls.Add(this.nudRewindBufferSize);
+			this.lblPauseBackgroundSettings.AutoSize = true;
-			this.flowLayoutPanel6.Controls.Add(this.lblRewindMinutes);
+			this.lblPauseBackgroundSettings.ForeColor = System.Drawing.SystemColors.GrayText;
-			this.flowLayoutPanel6.Dock = System.Windows.Forms.DockStyle.Top;
+			this.lblPauseBackgroundSettings.Location = new System.Drawing.Point(0, 79);
-			this.flowLayoutPanel6.Location = new System.Drawing.Point(10, 224);
+			this.lblPauseBackgroundSettings.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
-			this.flowLayoutPanel6.Margin = new System.Windows.Forms.Padding(10, 3, 0, 0);
+			this.lblPauseBackgroundSettings.Name = "lblPauseBackgroundSettings";
-			this.flowLayoutPanel6.Name = "flowLayoutPanel6";
+			this.lblPauseBackgroundSettings.Size = new System.Drawing.Size(141, 13);
-			this.flowLayoutPanel6.Size = new System.Drawing.Size(524, 23);
+			this.lblPauseBackgroundSettings.TabIndex = 26;
-			this.flowLayoutPanel6.TabIndex = 35;
+			this.lblPauseBackgroundSettings.Text = "Pause/Background Settings";
 			// 
-			// lblRewind
+			// flowLayoutPanel8
 			// 
-			this.lblRewind.Anchor = System.Windows.Forms.AnchorStyles.Left;
+			this.flowLayoutPanel8.Controls.Add(this.lblPauseIn);
-			this.lblRewind.AutoSize = true;
+			this.flowLayoutPanel8.Controls.Add(this.chkPauseWhenInBackground);
-			this.lblRewind.Location = new System.Drawing.Point(3, 4);
+			this.flowLayoutPanel8.Controls.Add(this.chkPauseInMenuAndConfig);
-			this.lblRewind.Name = "lblRewind";
+			this.flowLayoutPanel8.Controls.Add(this.chkPauseInDebugger);
-			this.lblRewind.Size = new System.Drawing.Size(142, 13);
+			this.flowLayoutPanel8.Dock = System.Windows.Forms.DockStyle.Fill;
-			this.lblRewind.TabIndex = 3;
+			this.flowLayoutPanel8.Location = new System.Drawing.Point(7, 95);
-			this.lblRewind.Text = "Keep rewind data for the last";
+			this.flowLayoutPanel8.Margin = new System.Windows.Forms.Padding(7, 3, 0, 0);
+			this.flowLayoutPanel8.Name = "flowLayoutPanel8";
+			this.flowLayoutPanel8.Size = new System.Drawing.Size(527, 22);
+			this.flowLayoutPanel8.TabIndex = 29;
 			// 
-			// nudRewindBufferSize
+			// lblPauseIn
 			// 
-			this.nudRewindBufferSize.Anchor = System.Windows.Forms.AnchorStyles.Left;
+			this.lblPauseIn.Anchor = System.Windows.Forms.AnchorStyles.Left;
-			this.nudRewindBufferSize.DecimalPlaces = 0;
+			this.lblPauseIn.AutoSize = true;
-			this.nudRewindBufferSize.Increment = new decimal(new int[] {
+			this.lblPauseIn.Location = new System.Drawing.Point(3, 4);
-            1,
+			this.lblPauseIn.Margin = new System.Windows.Forms.Padding(3, 0, 3, 1);
-            0,
+			this.lblPauseIn.Name = "lblPauseIn";
-            0,
+			this.lblPauseIn.Size = new System.Drawing.Size(80, 13);
-            0});
+			this.lblPauseIn.TabIndex = 0;
-			this.nudRewindBufferSize.Location = new System.Drawing.Point(148, 0);
+			this.lblPauseIn.Text = "Pause when in:";
-			this.nudRewindBufferSize.Margin = new System.Windows.Forms.Padding(0);
-			this.nudRewindBufferSize.Maximum = new decimal(new int[] {
-            900,
-            0,
-            0,
-            0});
-			this.nudRewindBufferSize.MaximumSize = new System.Drawing.Size(10000, 20);
-			this.nudRewindBufferSize.Minimum = new decimal(new int[] {
-            0,
-            0,
-            0,
-            0});
-			this.nudRewindBufferSize.MinimumSize = new System.Drawing.Size(0, 21);
-			this.nudRewindBufferSize.Name = "nudRewindBufferSize";
-			this.nudRewindBufferSize.Size = new System.Drawing.Size(42, 21);
-			this.nudRewindBufferSize.TabIndex = 1;
-			this.nudRewindBufferSize.Value = new decimal(new int[] {
-            30,
-            0,
-            0,
-            0});
 			// 
-			// lblRewindMinutes
+			// chkPauseWhenInBackground
 			// 
-			this.lblRewindMinutes.Anchor = System.Windows.Forms.AnchorStyles.Left;
+			this.chkPauseWhenInBackground.AutoSize = true;
-			this.lblRewindMinutes.AutoSize = true;
+			this.chkPauseWhenInBackground.Location = new System.Drawing.Point(89, 3);
-			this.lblRewindMinutes.Location = new System.Drawing.Point(193, 4);
+			this.chkPauseWhenInBackground.Name = "chkPauseWhenInBackground";
-			this.lblRewindMinutes.Name = "lblRewindMinutes";
+			this.chkPauseWhenInBackground.Size = new System.Drawing.Size(84, 17);
-			this.lblRewindMinutes.Size = new System.Drawing.Size(175, 13);
+			this.chkPauseWhenInBackground.TabIndex = 13;
-			this.lblRewindMinutes.TabIndex = 2;
+			this.chkPauseWhenInBackground.Text = "Background";
-			this.lblRewindMinutes.Text = "minutes (Memory Usage ≈5MB/min)";
+			this.chkPauseWhenInBackground.UseVisualStyleBackColor = true;
 			// 
-			// lblAdvancedMisc
+			// chkPauseInMenuAndConfig
 			// 
-			this.lblAdvancedMisc.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
+			this.chkPauseInMenuAndConfig.AutoSize = true;
-			this.lblAdvancedMisc.AutoSize = true;
+			this.chkPauseInMenuAndConfig.Location = new System.Drawing.Point(179, 3);
-			this.lblAdvancedMisc.ForeColor = System.Drawing.SystemColors.GrayText;
+			this.chkPauseInMenuAndConfig.Name = "chkPauseInMenuAndConfig";
-			this.lblAdvancedMisc.Location = new System.Drawing.Point(0, 208);
+			this.chkPauseInMenuAndConfig.Size = new System.Drawing.Size(142, 17);
-			this.lblAdvancedMisc.Margin = new System.Windows.Forms.Padding(0, 0, 3, 0);
+			this.chkPauseInMenuAndConfig.TabIndex = 16;
-			this.lblAdvancedMisc.Name = "lblAdvancedMisc";
+			this.chkPauseInMenuAndConfig.Text = "Menu and config dialogs";
-			this.lblAdvancedMisc.Size = new System.Drawing.Size(73, 13);
+			this.chkPauseInMenuAndConfig.UseVisualStyleBackColor = true;
-			this.lblAdvancedMisc.TabIndex = 36;
+			// 
-			this.lblAdvancedMisc.Text = "Misc. Settings";
+			// chkPauseInDebugger
+			// 
+			this.chkPauseInDebugger.AutoSize = true;
+			this.chkPauseInDebugger.Location = new System.Drawing.Point(327, 3);
+			this.chkPauseInDebugger.Name = "chkPauseInDebugger";
+			this.chkPauseInDebugger.Size = new System.Drawing.Size(103, 17);
+			this.chkPauseInDebugger.TabIndex = 18;
+			this.chkPauseInDebugger.Text = "Debugging tools";
+			this.chkPauseInDebugger.UseVisualStyleBackColor = true;
+			// 
+			// chkAllowBackgroundInput
+			// 
+			this.chkAllowBackgroundInput.AutoSize = true;
+			this.chkAllowBackgroundInput.Location = new System.Drawing.Point(13, 120);
+			this.chkAllowBackgroundInput.Margin = new System.Windows.Forms.Padding(13, 3, 3, 3);
+			this.chkAllowBackgroundInput.Name = "chkAllowBackgroundInput";
+			this.chkAllowBackgroundInput.Size = new System.Drawing.Size(177, 17);
+			this.chkAllowBackgroundInput.TabIndex = 30;
+			this.chkAllowBackgroundInput.Text = "Allow input when in background";
+			this.chkAllowBackgroundInput.UseVisualStyleBackColor = true;
 			// 
 			// frmPreferences
 			// 
@@ -999,6 +1090,8 @@
 			this.tableLayoutPanel1.PerformLayout();
 			this.flowLayoutPanel6.ResumeLayout(false);
 			this.flowLayoutPanel6.PerformLayout();
+			this.flowLayoutPanel8.ResumeLayout(false);
+			this.flowLayoutPanel8.PerformLayout();
 			this.ResumeLayout(false);
 			this.PerformLayout();
 
@@ -1069,5 +1162,12 @@
 		private System.Windows.Forms.Label lblRewind;
 		private Controls.MesenNumericUpDown nudRewindBufferSize;
 		private System.Windows.Forms.Label lblRewindMinutes;
+		private System.Windows.Forms.CheckBox chkAllowBackgroundInput;
+		private System.Windows.Forms.FlowLayoutPanel flowLayoutPanel8;
+		private System.Windows.Forms.Label lblPauseIn;
+		private System.Windows.Forms.CheckBox chkPauseWhenInBackground;
+		private System.Windows.Forms.CheckBox chkPauseInMenuAndConfig;
+		private System.Windows.Forms.CheckBox chkPauseInDebugger;
+		private System.Windows.Forms.Label lblPauseBackgroundSettings;
 	}
 }

UI/Forms/Config/frmPreferences.cs

@@ -33,6 +33,11 @@ namespace Mesen.GUI.Forms.Config
 			AddBinding(nameof(PreferencesConfig.SingleInstance), chkSingleInstance);
 			AddBinding(nameof(PreferencesConfig.AutoLoadPatches), chkAutoLoadPatches);
 
+			AddBinding(nameof(PreferencesConfig.PauseWhenInBackground), chkPauseWhenInBackground);
+			AddBinding(nameof(PreferencesConfig.PauseWhenInMenusAndConfig), chkPauseInMenuAndConfig);
+			AddBinding(nameof(PreferencesConfig.PauseWhenInDebuggingTools), chkPauseInDebugger);
+			AddBinding(nameof(PreferencesConfig.AllowBackgroundInput), chkAllowBackgroundInput);
+
 			AddBinding(nameof(PreferencesConfig.AssociateRomFiles), chkRomFormat);
 			AddBinding(nameof(PreferencesConfig.AssociateMsmFiles), chkMsmFormat);
 			AddBinding(nameof(PreferencesConfig.AssociateMssFiles), chkMssFormat);

UI/Forms/frmMain.Designer.cs

@@ -44,7 +44,7 @@
 			this.mnuPowerCycle = new System.Windows.Forms.ToolStripMenuItem();
 			this.toolStripMenuItem24 = new System.Windows.Forms.ToolStripSeparator();
 			this.mnuPowerOff = new System.Windows.Forms.ToolStripMenuItem();
-			this.optionsToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+			this.mnuOptions = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuEmulationSpeed = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuEmuSpeedNormal = new System.Windows.Forms.ToolStripMenuItem();
 			this.toolStripMenuItem8 = new System.Windows.Forms.ToolStripSeparator();
@@ -110,7 +110,7 @@
 			this.mnuEmulationConfig = new System.Windows.Forms.ToolStripMenuItem();
 			this.toolStripMenuItem3 = new System.Windows.Forms.ToolStripSeparator();
 			this.mnuPreferences = new System.Windows.Forms.ToolStripMenuItem();
-			this.toolsToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+			this.mnuTools = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuSoundRecorder = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuWaveRecord = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuWaveStop = new System.Windows.Forms.ToolStripMenuItem();
@@ -121,11 +121,12 @@
 			this.mnuLogWindow = new System.Windows.Forms.ToolStripMenuItem();
 			this.toolStripMenuItem7 = new System.Windows.Forms.ToolStripSeparator();
 			this.mnuTakeScreenshot = new System.Windows.Forms.ToolStripMenuItem();
-			this.debugToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+			this.mnuDebug = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuDebugger = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuSpcDebugger = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuMemoryTools = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuTraceLogger = new System.Windows.Forms.ToolStripMenuItem();
+			this.mnuScriptWindow = new System.Windows.Forms.ToolStripMenuItem();
 			this.toolStripMenuItem12 = new System.Windows.Forms.ToolStripSeparator();
 			this.mnuTilemapViewer = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuTileViewer = new System.Windows.Forms.ToolStripMenuItem();
@@ -141,7 +142,6 @@
 			this.mnuAbout = new System.Windows.Forms.ToolStripMenuItem();
 			this.pnlRenderer = new System.Windows.Forms.Panel();
 			this.ctrlRecentGames = new Mesen.GUI.Controls.ctrlRecentGames();
-			this.mnuScriptWindow = new System.Windows.Forms.ToolStripMenuItem();
 			this.mnuMain.SuspendLayout();
 			this.pnlRenderer.SuspendLayout();
 			this.SuspendLayout();
@@ -158,9 +158,9 @@
 			this.mnuMain.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.mnuFile,
             this.mnuGame,
-            this.optionsToolStripMenuItem,
+            this.mnuOptions,
-            this.toolsToolStripMenuItem,
+            this.mnuTools,
-            this.debugToolStripMenuItem,
+            this.mnuDebug,
             this.mnuHelp});
 			this.mnuMain.Location = new System.Drawing.Point(0, 0);
 			this.mnuMain.Name = "mnuMain";
@@ -182,55 +182,57 @@
 			this.mnuFile.Name = "mnuFile";
 			this.mnuFile.Size = new System.Drawing.Size(37, 20);
 			this.mnuFile.Text = "File";
+			this.mnuFile.DropDownClosed += new System.EventHandler(this.mnu_DropDownClosed);
 			this.mnuFile.DropDownOpening += new System.EventHandler(this.mnuFile_DropDownOpening);
+			this.mnuFile.DropDownOpened += new System.EventHandler(this.mnu_DropDownOpened);
 			// 
 			// mnuOpen
 			// 
 			this.mnuOpen.Image = global::Mesen.GUI.Properties.Resources.Folder;
 			this.mnuOpen.Name = "mnuOpen";
-			this.mnuOpen.Size = new System.Drawing.Size(136, 22);
+			this.mnuOpen.Size = new System.Drawing.Size(152, 22);
 			this.mnuOpen.Text = "Open";
 			// 
 			// toolStripMenuItem2
 			// 
 			this.toolStripMenuItem2.Name = "toolStripMenuItem2";
-			this.toolStripMenuItem2.Size = new System.Drawing.Size(133, 6);
+			this.toolStripMenuItem2.Size = new System.Drawing.Size(149, 6);
 			// 
 			// mnuSaveState
 			// 
 			this.mnuSaveState.Name = "mnuSaveState";
-			this.mnuSaveState.Size = new System.Drawing.Size(136, 22);
+			this.mnuSaveState.Size = new System.Drawing.Size(152, 22);
 			this.mnuSaveState.Text = "Save State";
 			this.mnuSaveState.DropDownOpening += new System.EventHandler(this.mnuSaveState_DropDownOpening);
 			// 
 			// mnuLoadState
 			// 
 			this.mnuLoadState.Name = "mnuLoadState";
-			this.mnuLoadState.Size = new System.Drawing.Size(136, 22);
+			this.mnuLoadState.Size = new System.Drawing.Size(152, 22);
 			this.mnuLoadState.Text = "Load State";
 			this.mnuLoadState.DropDownOpening += new System.EventHandler(this.mnuLoadState_DropDownOpening);
 			// 
 			// toolStripMenuItem10
 			// 
 			this.toolStripMenuItem10.Name = "toolStripMenuItem10";
-			this.toolStripMenuItem10.Size = new System.Drawing.Size(133, 6);
+			this.toolStripMenuItem10.Size = new System.Drawing.Size(149, 6);
 			// 
 			// mnuRecentFiles
 			// 
 			this.mnuRecentFiles.Name = "mnuRecentFiles";
-			this.mnuRecentFiles.Size = new System.Drawing.Size(136, 22);
+			this.mnuRecentFiles.Size = new System.Drawing.Size(152, 22);
 			this.mnuRecentFiles.Text = "Recent Files";
 			// 
 			// toolStripMenuItem6
 			// 
 			this.toolStripMenuItem6.Name = "toolStripMenuItem6";
-			this.toolStripMenuItem6.Size = new System.Drawing.Size(133, 6);
+			this.toolStripMenuItem6.Size = new System.Drawing.Size(149, 6);
 			// 
 			// mnuExit
 			// 
 			this.mnuExit.Image = global::Mesen.GUI.Properties.Resources.Exit;
 			this.mnuExit.Name = "mnuExit";
-			this.mnuExit.Size = new System.Drawing.Size(136, 22);
+			this.mnuExit.Size = new System.Drawing.Size(152, 22);
 			this.mnuExit.Text = "Exit";
 			// 
 			// mnuGame
@@ -244,13 +246,15 @@
 			this.mnuGame.Name = "mnuGame";
 			this.mnuGame.Size = new System.Drawing.Size(50, 20);
 			this.mnuGame.Text = "Game";
+			this.mnuGame.DropDownClosed += new System.EventHandler(this.mnu_DropDownClosed);
+			this.mnuGame.DropDownOpened += new System.EventHandler(this.mnu_DropDownOpened);
 			// 
 			// mnuPause
 			// 
 			this.mnuPause.Enabled = false;
 			this.mnuPause.Image = global::Mesen.GUI.Properties.Resources.MediaPause;
 			this.mnuPause.Name = "mnuPause";
-			this.mnuPause.Size = new System.Drawing.Size(139, 22);
+			this.mnuPause.Size = new System.Drawing.Size(152, 22);
 			this.mnuPause.Text = "Pause";
 			// 
 			// mnuReset
@@ -258,7 +262,7 @@
 			this.mnuReset.Enabled = false;
 			this.mnuReset.Image = global::Mesen.GUI.Properties.Resources.Refresh;
 			this.mnuReset.Name = "mnuReset";
-			this.mnuReset.Size = new System.Drawing.Size(139, 22);
+			this.mnuReset.Size = new System.Drawing.Size(152, 22);
 			this.mnuReset.Text = "Reset";
 			// 
 			// mnuPowerCycle
@@ -266,24 +270,24 @@
 			this.mnuPowerCycle.Enabled = false;
 			this.mnuPowerCycle.Image = global::Mesen.GUI.Properties.Resources.PowerCycle;
 			this.mnuPowerCycle.Name = "mnuPowerCycle";
-			this.mnuPowerCycle.Size = new System.Drawing.Size(139, 22);
+			this.mnuPowerCycle.Size = new System.Drawing.Size(152, 22);
 			this.mnuPowerCycle.Text = "Power Cycle";
 			// 
 			// toolStripMenuItem24
 			// 
 			this.toolStripMenuItem24.Name = "toolStripMenuItem24";
-			this.toolStripMenuItem24.Size = new System.Drawing.Size(136, 6);
+			this.toolStripMenuItem24.Size = new System.Drawing.Size(149, 6);
 			// 
 			// mnuPowerOff
 			// 
 			this.mnuPowerOff.Image = global::Mesen.GUI.Properties.Resources.MediaStop;
 			this.mnuPowerOff.Name = "mnuPowerOff";
-			this.mnuPowerOff.Size = new System.Drawing.Size(139, 22);
+			this.mnuPowerOff.Size = new System.Drawing.Size(152, 22);
 			this.mnuPowerOff.Text = "Power Off";
 			// 
-			// optionsToolStripMenuItem
+			// mnuOptions
 			// 
-			this.optionsToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
+			this.mnuOptions.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.mnuEmulationSpeed,
             this.mnuVideoScale,
             this.mnuVideoFilter,
@@ -295,9 +299,11 @@
             this.mnuEmulationConfig,
             this.toolStripMenuItem3,
             this.mnuPreferences});
-			this.optionsToolStripMenuItem.Name = "optionsToolStripMenuItem";
+			this.mnuOptions.Name = "mnuOptions";
-			this.optionsToolStripMenuItem.Size = new System.Drawing.Size(61, 20);
+			this.mnuOptions.Size = new System.Drawing.Size(61, 20);
-			this.optionsToolStripMenuItem.Text = "Options";
+			this.mnuOptions.Text = "Options";
+			this.mnuOptions.DropDownClosed += new System.EventHandler(this.mnu_DropDownClosed);
+			this.mnuOptions.DropDownOpened += new System.EventHandler(this.mnu_DropDownOpened);
 			// 
 			// mnuEmulationSpeed
 			// 
@@ -316,7 +322,7 @@
             this.mnuShowFPS});
 			this.mnuEmulationSpeed.Image = global::Mesen.GUI.Properties.Resources.Speed;
 			this.mnuEmulationSpeed.Name = "mnuEmulationSpeed";
-			this.mnuEmulationSpeed.Size = new System.Drawing.Size(135, 22);
+			this.mnuEmulationSpeed.Size = new System.Drawing.Size(152, 22);
 			this.mnuEmulationSpeed.Text = "Speed";
 			this.mnuEmulationSpeed.DropDownOpening += new System.EventHandler(this.mnuEmulationSpeed_DropDownOpening);
 			// 
@@ -403,7 +409,7 @@
             this.mnuFullscreen});
 			this.mnuVideoScale.Image = global::Mesen.GUI.Properties.Resources.Fullscreen;
 			this.mnuVideoScale.Name = "mnuVideoScale";
-			this.mnuVideoScale.Size = new System.Drawing.Size(135, 22);
+			this.mnuVideoScale.Size = new System.Drawing.Size(152, 22);
 			this.mnuVideoScale.Text = "Video Size";
 			this.mnuVideoScale.DropDownOpening += new System.EventHandler(this.mnuVideoScale_DropDownOpening);
 			// 
@@ -489,7 +495,7 @@
             this.mnuBilinearInterpolation});
 			this.mnuVideoFilter.Image = global::Mesen.GUI.Properties.Resources.VideoFilter;
 			this.mnuVideoFilter.Name = "mnuVideoFilter";
-			this.mnuVideoFilter.Size = new System.Drawing.Size(135, 22);
+			this.mnuVideoFilter.Size = new System.Drawing.Size(152, 22);
 			this.mnuVideoFilter.Text = "Video Filter";
 			this.mnuVideoFilter.DropDownOpening += new System.EventHandler(this.mnuVideoFilter_DropDownOpening);
 			// 
@@ -676,7 +682,7 @@
             this.mnuRegionPal});
 			this.mnuRegion.Image = global::Mesen.GUI.Properties.Resources.WebBrowser;
 			this.mnuRegion.Name = "mnuRegion";
-			this.mnuRegion.Size = new System.Drawing.Size(135, 22);
+			this.mnuRegion.Size = new System.Drawing.Size(152, 22);
 			this.mnuRegion.Text = "Region";
 			this.mnuRegion.DropDownOpening += new System.EventHandler(this.mnuRegion_DropDownOpening);
 			// 
@@ -706,13 +712,13 @@
 			// toolStripMenuItem4
 			// 
 			this.toolStripMenuItem4.Name = "toolStripMenuItem4";
-			this.toolStripMenuItem4.Size = new System.Drawing.Size(132, 6);
+			this.toolStripMenuItem4.Size = new System.Drawing.Size(149, 6);
 			// 
 			// mnuAudioConfig
 			// 
 			this.mnuAudioConfig.Image = global::Mesen.GUI.Properties.Resources.Audio;
 			this.mnuAudioConfig.Name = "mnuAudioConfig";
-			this.mnuAudioConfig.Size = new System.Drawing.Size(135, 22);
+			this.mnuAudioConfig.Size = new System.Drawing.Size(152, 22);
 			this.mnuAudioConfig.Text = "Audio";
 			this.mnuAudioConfig.Click += new System.EventHandler(this.mnuAudioConfig_Click);
 			// 
@@ -720,7 +726,7 @@
 			// 
 			this.mnuInputConfig.Image = global::Mesen.GUI.Properties.Resources.Controller;
 			this.mnuInputConfig.Name = "mnuInputConfig";
-			this.mnuInputConfig.Size = new System.Drawing.Size(135, 22);
+			this.mnuInputConfig.Size = new System.Drawing.Size(152, 22);
 			this.mnuInputConfig.Text = "Input";
 			this.mnuInputConfig.Click += new System.EventHandler(this.mnuInputConfig_Click);
 			// 
@@ -728,7 +734,7 @@
 			// 
 			this.mnuVideoConfig.Image = global::Mesen.GUI.Properties.Resources.VideoOptions;
 			this.mnuVideoConfig.Name = "mnuVideoConfig";
-			this.mnuVideoConfig.Size = new System.Drawing.Size(135, 22);
+			this.mnuVideoConfig.Size = new System.Drawing.Size(152, 22);
 			this.mnuVideoConfig.Text = "Video";
 			this.mnuVideoConfig.Click += new System.EventHandler(this.mnuVideoConfig_Click);
 			// 
@@ -736,36 +742,38 @@
 			// 
 			this.mnuEmulationConfig.Image = global::Mesen.GUI.Properties.Resources.DipSwitches;
 			this.mnuEmulationConfig.Name = "mnuEmulationConfig";
-			this.mnuEmulationConfig.Size = new System.Drawing.Size(135, 22);
+			this.mnuEmulationConfig.Size = new System.Drawing.Size(152, 22);
 			this.mnuEmulationConfig.Text = "Emulation";
 			this.mnuEmulationConfig.Click += new System.EventHandler(this.mnuEmulationConfig_Click);
 			// 
 			// toolStripMenuItem3
 			// 
 			this.toolStripMenuItem3.Name = "toolStripMenuItem3";
-			this.toolStripMenuItem3.Size = new System.Drawing.Size(132, 6);
+			this.toolStripMenuItem3.Size = new System.Drawing.Size(149, 6);
 			// 
 			// mnuPreferences
 			// 
 			this.mnuPreferences.Image = global::Mesen.GUI.Properties.Resources.Settings;
 			this.mnuPreferences.Name = "mnuPreferences";
-			this.mnuPreferences.Size = new System.Drawing.Size(135, 22);
+			this.mnuPreferences.Size = new System.Drawing.Size(152, 22);
 			this.mnuPreferences.Text = "Preferences";
 			this.mnuPreferences.Click += new System.EventHandler(this.mnuPreferences_Click);
 			// 
-			// toolsToolStripMenuItem
+			// mnuTools
 			// 
-			this.toolsToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
+			this.mnuTools.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.mnuSoundRecorder,
             this.mnuVideoRecorder,
             this.toolStripMenuItem11,
             this.mnuLogWindow,
             this.toolStripMenuItem7,
             this.mnuTakeScreenshot});
-			this.toolsToolStripMenuItem.Name = "toolsToolStripMenuItem";
+			this.mnuTools.Name = "mnuTools";
-			this.toolsToolStripMenuItem.Size = new System.Drawing.Size(47, 20);
+			this.mnuTools.Size = new System.Drawing.Size(47, 20);
-			this.toolsToolStripMenuItem.Text = "Tools";
+			this.mnuTools.Text = "Tools";
-			this.toolsToolStripMenuItem.DropDownOpening += new System.EventHandler(this.toolsToolStripMenuItem_DropDownOpening);
+			this.mnuTools.DropDownClosed += new System.EventHandler(this.mnu_DropDownClosed);
+			this.mnuTools.DropDownOpening += new System.EventHandler(this.mnuTools_DropDownOpening);
+			this.mnuTools.DropDownOpened += new System.EventHandler(this.mnu_DropDownOpened);
 			// 
 			// mnuSoundRecorder
 			// 
@@ -845,9 +853,9 @@
 			this.mnuTakeScreenshot.Size = new System.Drawing.Size(159, 22);
 			this.mnuTakeScreenshot.Text = "Take Screenshot";
 			// 
-			// debugToolStripMenuItem
+			// mnuDebug
 			// 
-			this.debugToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
+			this.mnuDebug.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.mnuDebugger,
             this.mnuSpcDebugger,
             this.mnuMemoryTools,
@@ -860,9 +868,11 @@
             this.mnuPaletteViewer,
             this.toolStripMenuItem22,
             this.mnuEventViewer});
-			this.debugToolStripMenuItem.Name = "debugToolStripMenuItem";
+			this.mnuDebug.Name = "mnuDebug";
-			this.debugToolStripMenuItem.Size = new System.Drawing.Size(54, 20);
+			this.mnuDebug.Size = new System.Drawing.Size(54, 20);
-			this.debugToolStripMenuItem.Text = "Debug";
+			this.mnuDebug.Text = "Debug";
+			this.mnuDebug.DropDownClosed += new System.EventHandler(this.mnu_DropDownClosed);
+			this.mnuDebug.DropDownOpened += new System.EventHandler(this.mnu_DropDownOpened);
 			// 
 			// mnuDebugger
 			// 
@@ -892,6 +902,13 @@
 			this.mnuTraceLogger.Size = new System.Drawing.Size(155, 22);
 			this.mnuTraceLogger.Text = "Trace Logger";
 			// 
+			// mnuScriptWindow
+			// 
+			this.mnuScriptWindow.Image = global::Mesen.GUI.Properties.Resources.Script;
+			this.mnuScriptWindow.Name = "mnuScriptWindow";
+			this.mnuScriptWindow.Size = new System.Drawing.Size(155, 22);
+			this.mnuScriptWindow.Text = "Script Window";
+			// 
 			// toolStripMenuItem12
 			// 
 			this.toolStripMenuItem12.Name = "toolStripMenuItem12";
@@ -948,6 +965,8 @@
 			this.mnuHelp.Name = "mnuHelp";
 			this.mnuHelp.Size = new System.Drawing.Size(44, 20);
 			this.mnuHelp.Text = "Help";
+			this.mnuHelp.DropDownClosed += new System.EventHandler(this.mnu_DropDownClosed);
+			this.mnuHelp.DropDownOpened += new System.EventHandler(this.mnu_DropDownOpened);
 			// 
 			// mnuCheckForUpdates
 			// 
@@ -1003,13 +1022,6 @@
 			this.ctrlRecentGames.TabIndex = 1;
 			this.ctrlRecentGames.Visible = false;
 			// 
-			// mnuScriptWindow
-			// 
-			this.mnuScriptWindow.Image = global::Mesen.GUI.Properties.Resources.Script;
-			this.mnuScriptWindow.Name = "mnuScriptWindow";
-			this.mnuScriptWindow.Size = new System.Drawing.Size(155, 22);
-			this.mnuScriptWindow.Text = "Script Window";
-			// 
 			// frmMain
 			// 
 			this.AllowDrop = true;
@@ -1037,7 +1049,7 @@
 
 		private Controls.ctrlRenderer ctrlRenderer;
 		private Controls.ctrlMesenMenuStrip mnuMain;
-		private System.Windows.Forms.ToolStripMenuItem debugToolStripMenuItem;
+		private System.Windows.Forms.ToolStripMenuItem mnuDebug;
 		private System.Windows.Forms.ToolStripMenuItem mnuDebugger;
 		private System.Windows.Forms.ToolStripMenuItem mnuTraceLogger;
 		private System.Windows.Forms.ToolStripMenuItem mnuFile;
@@ -1045,7 +1057,7 @@
 		private System.Windows.Forms.ToolStripMenuItem mnuMemoryTools;
 		private System.Windows.Forms.ToolStripMenuItem mnuTilemapViewer;
 		private System.Windows.Forms.ToolStripMenuItem mnuEventViewer;
-		private System.Windows.Forms.ToolStripMenuItem optionsToolStripMenuItem;
+		private System.Windows.Forms.ToolStripMenuItem mnuOptions;
 		private System.Windows.Forms.ToolStripMenuItem mnuVideoConfig;
 		private System.Windows.Forms.Panel pnlRenderer;
 		private System.Windows.Forms.ToolStripMenuItem mnuAudioConfig;
@@ -1121,7 +1133,7 @@
 		private System.Windows.Forms.ToolStripMenuItem mnuReportBug;
 		private System.Windows.Forms.ToolStripSeparator toolStripMenuItem5;
 		private System.Windows.Forms.ToolStripMenuItem mnuAbout;
-		private System.Windows.Forms.ToolStripMenuItem toolsToolStripMenuItem;
+		private System.Windows.Forms.ToolStripMenuItem mnuTools;
 		private System.Windows.Forms.ToolStripMenuItem mnuLogWindow;
 		private System.Windows.Forms.ToolStripSeparator toolStripMenuItem7;
 		private System.Windows.Forms.ToolStripMenuItem mnuTakeScreenshot;

UI/Forms/frmMain.cs

@@ -15,6 +15,7 @@ using System.Drawing;
 using System.IO;
 using System.Linq;
 using System.Text;
+using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 
@@ -91,6 +92,7 @@ namespace Mesen.GUI.Forms
 				UpdateHelper.CheckForUpdates(true);
 			}
 
+			InBackgroundHelper.StartBackgroundTimer();
 			this.Resize += frmMain_Resize;
 		}
 
@@ -483,7 +485,7 @@ namespace Mesen.GUI.Forms
 			RecordApi.AviStop();
 		}
 
-		private void toolsToolStripMenuItem_DropDownOpening(object sender, EventArgs e)
+		private void mnuTools_DropDownOpening(object sender, EventArgs e)
 		{
 			mnuVideoRecorder.Enabled = EmuRunner.IsRunning();
 			mnuAviRecord.Enabled = EmuRunner.IsRunning() && !RecordApi.AviIsRecording();
@@ -513,5 +515,18 @@ namespace Mesen.GUI.Forms
 			mnuWaveRecord.Enabled = EmuRunner.IsRunning() && !RecordApi.WaveIsRecording();
 			mnuWaveStop.Enabled = EmuRunner.IsRunning() && RecordApi.WaveIsRecording();
 		}
+
+		private void mnu_DropDownOpened(object sender, EventArgs e)
+		{
+			Interlocked.Increment(ref _inMenu);
+		}
+
+		private void mnu_DropDownClosed(object sender, EventArgs e)
+		{
+			Task.Run(() => {
+				Thread.Sleep(100);
+				Interlocked.Decrement(ref _inMenu);
+			});
+		}
 	}
 }

UI/Interop/ConfigApi.cs

@@ -25,6 +25,7 @@ namespace Mesen.GUI
 		[DllImport(DllPath)] public static extern void SetPreferences(InteropPreferencesConfig config);
 		[DllImport(DllPath)] public static extern void SetShortcutKeys([MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]ShortcutKeyInfo[] shortcuts, UInt32 count);
 
+		[DllImport(DllPath)] public static extern void SetEmulationFlag(EmulationFlags flag, bool enabled);
 		[DllImport(DllPath)] public static extern void SetDebuggerFlag(DebuggerFlags flag, bool enabled);
 
 		[DllImport(DllPath, EntryPoint = "GetAudioDevices")] private static extern IntPtr GetAudioDevicesWrapper();
@@ -34,6 +35,14 @@ namespace Mesen.GUI
 		}
 	}
 
+	public enum EmulationFlags : UInt32
+	{
+		Turbo = 1,
+		Rewind = 2,
+		MaximumSpeed = 4,
+		InBackground = 8,
+	}
+
 	public enum DebuggerFlags : UInt32
 	{
 		BreakOnBrk = 0x01,

UI/UI.csproj

@@ -815,6 +815,7 @@
     <Compile Include="Utilities\CommandLineHelper.cs" />
     <Compile Include="Utilities\FolderHelper.cs" />
     <Compile Include="Utilities\HexConverter.cs" />
+    <Compile Include="Utilities\InBackgroundHelper.cs" />
     <Compile Include="Utilities\Md5Helper.cs" />
     <Compile Include="Updates\UpdateHelper.cs" />
     <Compile Include="Utilities\XmlColor.cs" />

UI/Utilities/InBackgroundHelper.cs

@@ -0,0 +1,61 @@
+using Mesen.GUI.Config;
+using Mesen.GUI.Forms;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Mesen.GUI.Utilities
+{
+	class InBackgroundHelper
+	{
+		private static Timer _tmrUpdateBackground;
+		private static bool _needResume = false;
+
+		public static void StartBackgroundTimer()
+		{
+			_tmrUpdateBackground = new Timer();
+			_tmrUpdateBackground.Start();
+			_tmrUpdateBackground.Tick += tmrUpdateBackground_Tick;
+		}
+
+		public static void StopBackgroundTimer()
+		{
+			_tmrUpdateBackground?.Stop();
+		}
+
+		private static void tmrUpdateBackground_Tick(object sender, EventArgs e)
+		{
+			Form focusedForm = null;
+			foreach(Form form in Application.OpenForms) {
+				if(form.ContainsFocus) {
+					focusedForm = form;
+					break;
+				}
+			}
+
+			PreferencesConfig cfg = ConfigManager.Config.Preferences;
+
+			bool needPause = focusedForm == null && cfg.PauseWhenInBackground;
+			if(focusedForm != null) {
+				needPause |= cfg.PauseWhenInMenusAndConfig && focusedForm is BaseForm && (((BaseForm)focusedForm).InMenu || ((BaseForm)focusedForm).IsConfigForm);
+				needPause |= cfg.PauseWhenInMenusAndConfig && !(focusedForm is BaseInputForm) && !focusedForm.GetType().FullName.Contains("Debugger");
+				needPause |= cfg.PauseWhenInDebuggingTools && focusedForm.GetType().FullName.Contains("Debugger");
+			}
+
+			if(needPause) {
+				if(!EmuApi.IsPaused()) {
+					_needResume = true;
+					EmuApi.Pause();
+				}
+			} else if(_needResume) {
+				EmuApi.Resume();
+				_needResume = false;
+			}
+
+			ConfigApi.SetEmulationFlag(EmulationFlags.InBackground, focusedForm == null);
+		}
+	}
+}