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Sent to a child window when the user clicks the window's title bar or when the window is activated, moved, or sized.
A window receives this message through its WindowProc function.
#define WM_CHILDACTIVATE 0x0022
Parameters
-
wParam
-
This parameter is not used.
-
lParam
-
This parameter is not used.
Return value
Type: LRESULT
If an application processes this message, it should return zero.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
See also
-
Reference
-
Conceptual