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LRESULT CALLBACK KeyboardProc(
int code, // hook code
WPARAM wParam, // virtual-key code
LPARAM lParam // keystroke-message information
)
{
if(VK_F12==wParam)
{
keybd_event(0x57,0,0,0);
keybd_event(0x57,0,KEYEVENTF_KEYUP,0);
return 1;
}
else
{
return CallNextHookEx(g_hKeyboard,code,wParam,lParam);
}
}
#pragma data_seg(push, "Shared")
HHOOK NextHook = NULL;
#pragma data_seg(pop)
#pragma comment(linker, "/SECTION:Shared,RWS")
HMODULE Module;
BOOL APIENTRY DllMain(HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved)
{
if (ul_reason_for_call == DLL_PROCESS_ATTACH)
Module = hModule;
return TRUE;
}
LRESULT CALLBACK GetMsgProc(int code, WPARAM wParam, LPARAM lParam)
{
if (code == HC_ACTION)
{
PMSG msg = (PMSG)lParam;
if (msg->message == WM_KEYDOWN || msg->message == WM_KEYUP)
{
if (msg->wParam == VK_F12)
{
msg->wParam = 'W';
}
}
}
return CallNextHookEx(NextHook, code, wParam, lParam);
}
__declspec(dllexport) void StartHook()
{
NextHook = SetWindowsHookEx(WH_GETMESSAGE, GetMsgProc, Module, 0);
}
__declspec(dllexport) void StopHook()
{
UnhookWindowsHookEx(NextHook);
}