Click above to get retro games delivered to your door ever month!

 _twM5A( nB )
 ----------------------------------------------------------------------------
     Get the status of a mouse button pressed (0 = up, 1 = down). The
     button status is a single integer value. Bit 0 represents the left
     hand button and bit 1 the right hand button. The value of a bit is
     1 if the button is down and 0 if it is up.

       Arguments:

     nB - 'N' 0 if you want the status of the left hand button.
              1 for the right hand button.

       Return:

     0 - button released.
     1 - button pressed.

       Example:

     nLeftButtonPressed := _twM5A( 0 )