WM_QUERYOPEN message
Applies to: desktop apps only
Sent to an icon when the user requests that the window be restored to its previous size and position.
A window receives this message through its WindowProc function.
#define WM_QUERYOPEN 0x0013
Parameters
- wParam
-
This parameter is not used.
- lParam
-
This parameter is not used.
Return value
Type: LRESULT
If the icon can be opened, an application that processes this message should return TRUE; otherwise, it should return FALSE to prevent the icon from being opened.
Remarks
By default, the DefWindowProc function returns TRUE.
While processing this message, the application should not perform any action that would cause an activation or focus change (for example, creating a dialog box).
Requirements
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Minimum supported client | Windows 2000 Professional |
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Minimum supported server | Windows 2000 Server |
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Header |
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See also
- Reference
- DefWindowProc
- Conceptual
- Windows
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Build date: 2/3/2012
