WM_MDIDESTROY message
An application sends the WM_MDIDESTROY message to a multiple-document interface (MDI) client window to close an MDI child window.
#define WM_MDIDESTROY 0x0221
Parameters
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wParam
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A handle to the MDI child window to be closed.
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lParam
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This parameter is not used.
Return value
Type: zero
This message always returns zero.
Remarks
This message removes the title of the MDI child window from the MDI frame window and deactivates the child window. An application should use this message to close all MDI child windows.
If an MDI client window receives a message that changes the activation of its child windows and the active MDI child window is maximized, the system restores the active child window and maximizes the newly activated child window.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
See also
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Reference
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Conceptual