WM_NCMOUSEMOVE K4IMHT

The WM_NCMOUSEMOVE message is posted to a window when the cursor is moved within the nonclient area of the window. This message is posted to the window that contains the cursor. If a window has captured the mouse, this message is not posted.

WM_NCMOUSEMOVE

nHittest = (INT) wParam; // hit-test value

pts = MAKEPOINTS(lParam); // position of cursor

Parameters

nHittest

Value of wParam. Specifies the hit-test value returned by the DefWindowProc32D1NBH function as a result of processing the WM_NCHITTEST message. For a list of hit-test values, see WM_NCHITTEST1_TNZJB.

pts

Value of lParam. Specifies a POINTS24H.4H structure that contains the x- and y-coordinates of the cursor. The coordinates are relative to the upper-left corner of the screen.

Return Values

If an application processes this message, it should return zero.

Remarks

If it is appropriate to do so, the system sends the WM_SYSCOMMAND message to the window.

An application can use the MAKEPOINTS macro to convert the lParam parameter to a POINTS structure.