Thread: Mouse Messages

I'm trying to find out wether the control button while a mouse click is down, I'll show you one way I tried. I'm using Standard API

Code:

case WM_LBUTTONDOWN:
	if(wParam == MK_CONTROL)
	{
		hdc = GetDC(hwnd);
		TextOut(hdc, 30, 30, "Mouse with Control", strlen("Mouse with Control"));
		ReleaseDC(hwnd,hdc);
	}
	break;

I've tried switch statements, google, etc.
I'd appreciate any help, Thanks.

Thanks!