This is a way to remap Alt to Ctrl works great. Don't forget the default parameter switches back to alt if you do not define wParam may just be my computer well give it a try
include iostream
include windows.h
using namespace std;
HHOOK hHook = 0;
LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)
{
if (nCode == HC_ACTION)
{
KBDLLHOOKSTRUCT* p = (KBDLLHOOKSTRUCT*) lParam;
if (p->vkCode == VK_LMENU) // VK_LMENU = ALT key
{
switch (wParam){
case WM_SYSKEYDOWN :{ // use SYSKEYDOWN
cout << "Key down" << endl;
keybd_event(VK_LCONTROL, 0x1D, KEYEVENTF_EXTENDEDKEY | 0, 0 );
break;
}
case WM_KEYUP: // use regular keyup
{
cout << "Key up" << endl;
keybd_event( VK_LCONTROL, 0x1D, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
return 1;
break;
}
default:
wParam = WM_SYSKEYDOWN; // if you do not specify it changes back to alt
break;
}
return 1;
}
}
return CallNextHookEx(hHook, nCode, wParam, lParam);
}
int WINAPI WinMain (HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nCmdShow)
{
hHook = SetWindowsHookEx(WH_KEYBOARD_LL, &LowLevelKeyboardProc, hThisInstance, NULL);
if (hHook == NULL)
{
cout << "Error" << endl;
return 1;
}
MSG messages;
while (GetMessage (&messages, NULL, 0, 0))
{
TranslateMessage(&messages);
DispatchMessage(&messages);
}
return messages.wParam;
}