调用CWnd: : SetWindowPos并指定SWP_NOMOVE标志， 也可调用CWnd : : MoveWindow 但必须指定窗口的位置。
// Get the size of the window .
Crect reWindow
GetWindowRect (reWindow )
//Make the window twice as wide and twice as tall .
SetWindowPos (NULL , 0 , 0 , reWindow . Width ( ) *2,
reWindow . Height () * 2,
SWP_NOMOVE ｜SWP_NOZORDER )
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