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
-
wParam
-
The edge of the window that is being sized. This parameter can be one of the following values.
Value Meaning - 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.
Type: LRESULT
An application should return TRUE if it processes this message.
Requirement | Value |
---|---|
Minimum supported client |
Windows 2000 Professional [desktop apps only] |
Minimum supported server |
Windows 2000 Server [desktop apps only] |
Header |
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