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WM_QUERYOPEN message

  • Article

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

Requirement Value
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

DefWindowProc

Conceptual

Windows