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 WM_MOVE

The WM_MOVE message is sent after a window has been moved.

A window receives this message through its WindowProc function.

Parameters

• wParam
This parameter is not used.
• lParam
Specifies the x and y coordinates of the upper-left corner of the client area of the window. The low-order word contains the x-coordinate while the high-order word contains the y coordinate.

Return Value

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

Remarks

The parameters are given in screen coordinates for overlapped and pop-up windows and in parent-client coordinates for child windows.

The following example demonstrates how to obtain the position from the lParam parameter.

    xPos = (int)(short) LOWORD(lParam);   // horizontal position 
    yPos = (int)(short) HIWORD(lParam);   // vertical position 

You can also use the MAKEPOINTS macro to convert the lParam parameter to a POINTS structure.

Notification Requirements

• Minimum DLL Version None
• Header Declared in Winuser.h, include Windows.h
• Minimum operating systems Windows 95, Windows NT 3.1

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Notebook exported on Monday, 7 July 2008, 18:56:50 PM Eastern Daylight Time