Mouse Messages
Button
Pressed
Released
Double
Left
WM_LBUTTONDOWN
WM_LBUTTONUP
WM_LBUTTONDBLCLK
Middle
WM_MBUTTONDOWN
WM_MBUTTONUP
WM_MBUTTONDBLCLK
Right
WM_RBUTTONDOWN
WM_RBUTTONUP
WM_RBUTTONDBLCLK
