This message activates the next multiple document interface (MDI) child window immediately behind the currently active child window and places the currently active window behind all other child windows.
Parameter |
Description |
wParam |
Not used. |
|
lParam |
Not used. |
If an MDI client window receives any message that changes the activation of its child windows, and if the currently active MDI child window is maximized, Windows restores the currently active child and maximizes the newly activated child.