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Called by the framework when it needs to obtain a child window (usually a view or splitter window) to be displayed on a Windows 7 taskbar tab thumbnail.

virtual CWnd* GetTaskbarPreviewWnd();

Should return a valid pointer to a CWnd object, whose preview should be displayed on a Windows 7 taskbar tab related to this MDI child. The default implementation returns a child window of this MDI child with AFX_IDW_PANE_FIRST control ID (which is usually a CView-derived class).

Header: afxmdichildwndex.h

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