WM_CHILDACTIVATE message

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	Winuser.h (include Windows.h)

See also

Reference

MoveWindow

SetWindowPos

Conceptual

Windows