C++/doubt regaring wParam
My question iis,
is there any specific value for the middle click(that is the scroling button in b/w left click and right click in the mouse)of the mouse will have any specific value for wParam parameter.
if the middle mouse button goes down on the client area of a window, a WM_MBUTTONDOWN message is generated and the wParam could be one or more of these bit flags:
MK_CONTROL The CTRL key is down.
MK_LBUTTON The left mouse button is down.
MK_MBUTTON The middle mouse button is down.
MK_RBUTTON The right mouse button is down.
MK_SHIFT The SHIFT key is down.
MK_XBUTTON1 Windows 2000/XP: The first X button is down.
MK_XBUTTON2 Windows 2000/XP: The second X button is down
if the middle mouse button goes down on the non-client area of a window, a WM_NCMBUTTONDOWN message is generated and the wParam is the hit-test value returned by the DefWindowProc function as a result of processing the WM_NCHITTEST message.