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Keyboard:

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. reverted default so that ALT+TAB is not hooked (#556)
. reverted default so that ALT GR's fake LCONTROL is not hooked (#558)
. added new switches: -hook-alt-tab and -hook-altgr-control to support hooking these key combo's (#556)
This commit is contained in:
tomcw 2018-07-29 22:34:09 +01:00
parent b069614a25
commit 140d505fe9
4 changed files with 26 additions and 6 deletions
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10
HookFilter/HookFilter.cpp
View file

@ -1,6 +1,8 @@
#include <windows.h>
static HWND g_hFrameWindow = (HWND)0;
static bool g_bHookAltTab = false;
static bool g_bHookAltGrControl = false;
// NB. __stdcall (or WINAPI) and extern "C":
// . symbol is decorated as _<symbol>@bytes
@ -27,13 +29,13 @@ extern "C" __declspec(dllexport) LRESULT CALLBACK LowLevelKeyboardProc(
// . For: Microsoft PS/2/Win7-64, VAIO laptop/Win7-64, Microsoft USB/Win10-64
// NB. WM_KEYDOWN also includes a 9/10-bit? scanCode: LCONTROL=0x1D, RCONTROL=0x11D, RMENU=0x1D(not 0x21D)
// . Can't suppress in app, since scanCode is not >= 0x200
if (pKbdLlHookStruct->vkCode == VK_LCONTROL && pKbdLlHookStruct->scanCode >= 0x200) // GH#558
if (g_bHookAltGrControl && pKbdLlHookStruct->vkCode == VK_LCONTROL && pKbdLlHookStruct->scanCode >= 0x200) // GH#558
{
suppress = true;
}
// Suppress alt-tab
if (pKbdLlHookStruct->vkCode == VK_TAB && (pKbdLlHookStruct->flags & LLKHF_ALTDOWN))
if (g_bHookAltTab && pKbdLlHookStruct->vkCode == VK_TAB && (pKbdLlHookStruct->flags & LLKHF_ALTDOWN))
{
PostMessage(g_hFrameWindow, newMsg, VK_TAB, newlParam);
suppress = true;
@ -69,7 +71,9 @@ extern "C" __declspec(dllexport) LRESULT CALLBACK LowLevelKeyboardProc(
return CallNextHookEx(0/*parameter is ignored*/, nCode, wParam, lParam);
}
extern "C" __declspec(dllexport) void __cdecl RegisterHWND(HWND hWnd)
extern "C" __declspec(dllexport) void __cdecl RegisterHWND(HWND hWnd, bool bHookAltTab, bool bHookAltGrControl)
{
g_hFrameWindow = hWnd;
g_bHookAltTab = bHookAltTab;
g_bHookAltGrControl = bHookAltGrControl;
}

19
source/Applewin.cpp
View file

@ -79,6 +79,8 @@ TCHAR g_sDebugDir [MAX_PATH] = TEXT(""); // TODO: Not currently used
TCHAR g_sScreenShotDir[MAX_PATH] = TEXT(""); // TODO: Not currently used
bool g_bCapturePrintScreenKey = true;
static bool g_bHookSystemKey = true;
static bool g_bHookAltTab = false;
static bool g_bHookAltGrControl = false;
TCHAR g_sCurrentDir[MAX_PATH] = TEXT(""); // Also Starting Dir. Debugger uses this when load/save
bool g_bRestart = false;
@ -171,6 +173,11 @@ void SetLoadedSaveStateFlag(const bool bFlag)
g_bLoadedSaveState = bFlag;
}
bool GetHookAltGrControl(void)
{
return g_bHookAltGrControl;
}
static void ResetToLogoMode(void)
{
g_nAppMode = MODE_LOGO;
@ -882,10 +889,10 @@ static bool HookFilterForKeyboard()
_ASSERT(g_hFrameWindow);
typedef void (*RegisterHWNDProc)(HWND);
typedef void (*RegisterHWNDProc)(HWND, bool, bool);
RegisterHWNDProc RegisterHWND = (RegisterHWNDProc) GetProcAddress(g_hinstDLL, "RegisterHWND");
if (RegisterHWND)
RegisterHWND(g_hFrameWindow);
RegisterHWND(g_hFrameWindow, g_bHookAltTab, g_bHookAltGrControl);
HOOKPROC hkprcLowLevelKeyboardProc = (HOOKPROC) GetProcAddress(g_hinstDLL, "LowLevelKeyboardProc");
@ -1294,6 +1301,14 @@ int APIENTRY WinMain(HINSTANCE passinstance, HINSTANCE, LPSTR lpCmdLine, int)
{
g_bHookSystemKey = false;
}
else if (strcmp(lpCmdLine, "-hook-alt-tab") == 0) // GH#556
{
g_bHookAltTab = true;
}
else if (strcmp(lpCmdLine, "-hook-altgr-control") == 0) // GH#556
{
g_bHookAltGrControl = true;
}
else if (strcmp(lpCmdLine, "-spkr-inc") == 0)
{
lpCmdLine = GetCurrArg(lpNextArg);

1
source/Applewin.h
View file

@ -30,6 +30,7 @@ extern HINSTANCE g_hInstance;
extern AppMode_e g_nAppMode;
bool GetLoadedSaveStateFlag(void);
void SetLoadedSaveStateFlag(const bool bFlag);
bool GetHookAltGrControl(void);
extern TCHAR g_sProgramDir[MAX_PATH];
extern TCHAR g_sCurrentDir[MAX_PATH];

2
source/Keyboard.cpp
View file

@ -319,7 +319,7 @@ void KeybQueueKeypress (WPARAM key, Keystroke_e bASCII)
{
if ( (GetKeyState(VK_SHIFT) >= 0) && !g_bCapsLock )
newKey += 'a' - 'A'; // convert to lowercase key
else if (GetKeyState(VK_CONTROL) < 0)
else if (GetHookAltGrControl() && GetKeyState(VK_CONTROL) < 0)
newKey -= 'A' - 1; // convert to control-key
}