Export (0) Print
Expand All
1 out of 4 rated this helpful - Rate this topic

WM_SIZING message

Sent to a window that the user is resizing. By processing this message, an application can monitor the size and position of the drag rectangle and, if needed, change its size or position.

A window receives this message through its WindowProc function.


#define WM_SIZING                       0x0214

Parameters

wParam

The edge of the window that is being sized. This parameter can be one of the following values.

ValueMeaning
WMSZ_BOTTOM
6

Bottom edge

WMSZ_BOTTOMLEFT
7

Bottom-left corner

WMSZ_BOTTOMRIGHT
8

Bottom-right corner

WMSZ_LEFT
1

Left edge

WMSZ_RIGHT
2

Right edge

WMSZ_TOP
3

Top edge

WMSZ_TOPLEFT
4

Top-left corner

WMSZ_TOPRIGHT
5

Top-right corner

 

lParam

A pointer to a RECT structure with the screen coordinates of the drag rectangle. To change the size or position of the drag rectangle, an application must change the members of this structure.

Return value

Type: LRESULT

An application should return TRUE if it processes this message.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Winuser.h (include Windows.h)

See also

Reference
WM_MOVING
WM_SIZE
Conceptual
Windows
Other Resources
RECT

 

 

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.