Question

The following function is called whenever keypress event occurs:

static LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam) {

   printf("Key is pressed !\n");
   // If key pressed down,call function A
   // If key released , call function B
}

How do I detect these events ?

The key pressed could be any key from a window keyboard.I just want to know whether a key was pressed or was released after pressing. How do I do this ?

Answer 1

static LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam) 
{
     if ( nCode >= 0 )
     {
         if ( wParam == WM_KEYDOWN  || wParam == WM_SYSKEYDOWN )
         {
             functionA();
         }
         else
         {
             functionB();
         }
     }
     return CallNextHookEx(hHook, nCode, wParam, lParam);
}