MFC - message

class MyFrame : public CFrameWnd
{
...
DECLARE_MESSAGE_MAP()
};

BEGIN_MESSAGE_MAP(MyFrame, CFrameWnd)
...
END_MESSAGE_MAP()




ON_WM_LBUTTONDOWN() : 滑鼠左鍵按下
   afx_msg void OnLButtonDown(UINT nFlags, CPoint point)
{
char szBuffer[100];
wsprintf(szBuffer, "LButton point(%ld, %ld)", point.x, point.y);
              MessageBox(szBuffer);
}

afx_msg void OnLButtonDown(UINT nFlags, CPoint point)

{

SetCapture();

}

ON_WM_MOUSEMOVE() : 滑鼠游標移動

afx_msg void OnMouseMove(UINT nFlags, CPoint point)

{

if ( this == GetCapture() )

{

CClientDC aDC(this);

aDC.SetPixel(point, RGB(225, 0, 0) );

}

}

ON_WM_LBUTTONUP() : 滑鼠左鍵放開

afx_msg void OnLButtonUp(UINT nFlags, CPoint point)

{

ReleaseCapture();

}