Non-event KB handling

      GetAsyncKeyState(<someKey>); - takes the virtual key code & returns a WORD indicating if the key is pressed.

Example:

// macros must always be on a single line in pgm
// macro - return true if key is down
#define KEY_DOWN(vkCode) ((GetAsyncKeyState(vkCode) & 0x8000) ? 1 : 0)

// macro – return true if key is up
#define KEY_UP(vkCode) ((GetAsyncKeyState(vkCode) & 0x8000) ? 0 : 1)

To use in a pgm:

// In game loop
if (KEY_DOWN(VK_ESCAPE))
    // exit
else if (KEY_DOWN(VK_SPACE))
   // fire weapons
else if (KEY_DOWN(VK_ENTER))
   // raise shields

where: