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4/8/2010

This message is sent to a window after its size has changed.

Syntax 

WM_SIZE 
fwSizeType = 
wParam; 

nWidth = LOWORD(
lParam); 

nHeight = HIWORD(
lParam);

Parameters

fwSizeType

Specifies the type of resizing requested. It must be the following value.

Value Description

SIZE_RESTORED

The window has been resized, but neither the SIZE_MINIMIZED nor the SIZE_MAXIMIZED value applies.

SIZE_MINIMIZED

The window has been minimized.

SIZE_MAXIMIZED

The window has been maximized.

SIZE_MAXSHOW

The window has been maximized and is displayed.

SIZE_MAXHIDE

The window has been maximized and is hidden.
nWidth

Value of the low-order word of lParam. Specifies the new width of the client area.

nHeight

Value of the high-order word of lParam. Specifies the new height of the client area.

Return Value

An application should return zero if it processes this message.

Remarks

If the SetScrollPosor MoveWindowfunction is called for a child window as a result of the WM_SIZE message, the bRedrawparameter should be nonzero to cause the window to be repainted.

Although the width and height of a window are 32-bit values, the nWidthand nHeightparameters of the WM_SIZE message contain only the low-order 16 bits.

Requirements

Header winuser.h
Windows Embedded CE Windows CE 1.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also