Does anyone know of an API call that can detect whether or not (and
ideally which) mouse buttons are down?

The reason I ask is because I'd like to check this but some of the
objects I'm using don't support the mousedown (or mousekey, whatever its
called) event.

Thanks

Rich

?Does anyone know of an API call that can detect whether or not (and
?ideally which) mouse buttons are down?

GetAsyncKeyState should do it using:

  VK_LBUTTON = 1
  VK_MBUTTON = 4
  VK_RBUTTON = 2

You might also need

  GetSystemMetrics(SM_SWAPBUTTON)

to see if the buttons have been swapped.