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An application sends the WM_MDIGETACTIVE message to a multiple-document interface (MDI) client window to retrieve the handle to the active MDI child window.
#define WM_MDIGETACTIVE 0x0229
Parameters
-
wParam
-
This parameter is not used.
-
lParam
-
The maximized state. If this parameter is not NULL, it is a pointer to a value that indicates the maximized state of the MDI child window. If the value is TRUE, the window is maximized; a value of FALSE indicates that it is not. If this parameter is NULL, the parameter is ignored.
Return value
Type: HWND
The return value is the handle to the active MDI 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