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Hook system keys: (#556)

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. added -no-hook-system-key to prevent hooking system keys
. updated help
. HookFilter.dll: changed to directly send virtual key code
This commit is contained in:
tomcw 2018-06-16 10:24:05 +01:00
parent 734bc4cee2
commit 51669f36f3
3 changed files with 31 additions and 18 deletions
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10
HookFilter/HookFilter.cpp
View File

@ -20,28 +20,24 @@ extern "C" __declspec(dllexport) LRESULT CALLBACK LowLevelKeyboardProc(
UINT newMsg = pKbdLlHookStruct->flags & LLKHF_UP ? WM_KEYUP : WM_KEYDOWN;
LPARAM newlParam = newMsg == WM_KEYUP ? 3<<30 : 0; // b31:transition state, b30:previous key state
// Note about PostMessage() and use of VkKeyScan():
// . Convert the ascii code to virtual key code, so that the message pump can do TranslateMessage()
// . NB. From MSDN for "WM_KEYDOWN" && "WM_KEYUP" : "Applications must pass wParam to TranslateMessage without altering it at all."
// Suppress alt-tab
if (pKbdLlHookStruct->vkCode == VK_TAB && (pKbdLlHookStruct->flags & LLKHF_ALTDOWN))
{
PostMessage(g_hFrameWindow, newMsg, LOBYTE(VkKeyScan(0x09)), newlParam);
PostMessage(g_hFrameWindow, newMsg, VK_TAB, newlParam);
suppress = true;
}
// Suppress alt-escape
if (pKbdLlHookStruct->vkCode == VK_ESCAPE && (pKbdLlHookStruct->flags & LLKHF_ALTDOWN))
{
PostMessage(g_hFrameWindow, newMsg, LOBYTE(VkKeyScan(0x1B)), newlParam);
PostMessage(g_hFrameWindow, newMsg, VK_ESCAPE, newlParam);
suppress = true;
}
// Suppress alt-space
if (pKbdLlHookStruct->vkCode == VK_SPACE && (pKbdLlHookStruct->flags & LLKHF_ALTDOWN))
{
PostMessage(g_hFrameWindow, newMsg, LOBYTE(VkKeyScan(0x20)), newlParam);
PostMessage(g_hFrameWindow, newMsg, VK_SPACE, newlParam);
suppress = true;
}

2
help/CommandLine.html
View File

@ -42,6 +42,8 @@
Enable the dialog box to display the last file saved to<br><br>
-no-printscreen-key<br>
Prevent the PrintScreen key from being registered<br><br>
-no-hook-system-key<br>
Prevent certain system key combinations from being hooked (to prevent the emulator from trapping ALT+ESC, ALT+SPACE, ALT+TAB and CTRL+ESC). This means that the equivalent Open Apple+&lt;key&gt; combinations won't work within the emulator.<br><br>
-use-real-printer<br>
Enables Advanced configuration control to allow dumping to a real printer<br><br>
-noreg<br>

37
source/Applewin.cpp
View File

@ -78,6 +78,8 @@ TCHAR g_sProgramDir[MAX_PATH] = TEXT(""); // Directory of where AppleWin exe
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;
TCHAR g_sCurrentDir[MAX_PATH] = TEXT(""); // Also Starting Dir. Debugger uses this when load/save
bool g_bRestart = false;
bool g_bRestartFullScreen = false;
@ -871,7 +873,7 @@ static HINSTANCE g_hinstDLL = 0;
static HHOOK g_hhook = 0;
// Pre: g_hFrameWindow must be valid
void HookFilterForKeyboard()
bool HookFilterForKeyboard()
{
g_hinstDLL = LoadLibrary(TEXT("HookFilter.dll"));
@ -890,16 +892,17 @@ void HookFilterForKeyboard()
g_hinstDLL,
0);
if (g_hhook == 0 || g_hFrameWindow == 0)
{
std::string msg("Failed to install hook filter for system keys");
if (g_hhook != 0 && g_hFrameWindow != 0)
return true;
DWORD dwErr = GetLastError();
MessageBox(GetDesktopWindow(), msg.c_str(), "Warning", MB_ICONASTERISK | MB_OK);
std::string msg("Failed to install hook filter for system keys");
msg += "\n";
LogFileOutput(msg.c_str());
}
DWORD dwErr = GetLastError();
MessageBox(GetDesktopWindow(), msg.c_str(), "Warning", MB_ICONASTERISK | MB_OK);
msg += "\n";
LogFileOutput(msg.c_str());
return false;
}
void UnhookFilterForKeyboard()
@ -1227,6 +1230,10 @@ int APIENTRY WinMain(HINSTANCE passinstance, HINSTANCE, LPSTR lpCmdLine, int)
{
g_bShowPrintScreenWarningDialog = false;
}
else if (strcmp(lpCmdLine, "-no-hook-system-key") == 0) // Don't hook the System keys (eg. Left-ALT+ESC/SPACE/TAB) GH#556
{
g_bHookSystemKey = false;
}
else if (strcmp(lpCmdLine, "-spkr-inc") == 0)
{
lpCmdLine = GetCurrArg(lpNextArg);
@ -1419,7 +1426,11 @@ int APIENTRY WinMain(HINSTANCE passinstance, HINSTANCE, LPSTR lpCmdLine, int)
LogFileOutput("Main: RegisterHotKeys()\n");
}
HookFilterForKeyboard(); // needs valid g_hFrameWindow (for message pump)
if (g_bHookSystemKey)
{
if (HookFilterForKeyboard()) // needs valid g_hFrameWindow (for message pump)
LogFileOutput("Main: HookFilterForKeyboard()\n");
}
// Need to test if it's safe to call ResetMachineState(). In the meantime, just call DiskReset():
DiskReset(); // Switch from a booting A][+ to a non-autostart A][, so need to turn off floppy motor
@ -1527,7 +1538,11 @@ int APIENTRY WinMain(HINSTANCE passinstance, HINSTANCE, LPSTR lpCmdLine, int)
DSUninit();
LogFileOutput("Main: DSUninit()\n");
UnhookFilterForKeyboard();
if (g_bHookSystemKey)
{
UnhookFilterForKeyboard();
LogFileOutput("Main: UnhookFilterForKeyboard()\n");
}
}
while (g_bRestart);