Visual C++ and MFC Programming 2nd Edition

Chapter 5: The Document/View Architecture Visual C++ and MFC Fundamentals

The second argument, lpRect, is the new rectangle that will enclose the window after the

window has been moved, resized, or restored.

4.2.6 Window Moving..................................................................................

WM_MOVE: When a window has been moved, the operating system needs to update its

location. Therefore, the window sends a message called ON_WM_MOVE. Its syntax is:

afx_msg void OnMove(int x, int y);

The first argument of this message specifies the left horizontal location of the left border

of the window after the window has been moved. The second argument represents the

vertical position of the top border of the window after the window has been moved.

If you want to send this message, you should first call its implementation in the parent

class

WM_MOVING: While the user is moving a window, it (the window sends) an

ON_WM_MOVING message. Its syntax is:

afx_msg void OnMoving( UINT nSide, LPRECT lpRect );

The first argument, nSide, is the edge of the window that is being moved. It is the same

as for the ON_MOVE message.

The lpRect is the target dimension of the window that is being moved. That is, it contains

the new dimensions of the window as it is being moved.

Practical Learning: Moving a Window

1. To see the effect of moving a window, change the file as follows:

#include <afxwin.h>

class CMainFrame : public CFrameWnd