This topic is included for completeness. For more detail see the source code located in the VC\atlmfc\src\mfc folder of your Visual Studio installation.
void SetAutoHideParents(
CMFCAutoHideToolBar* pToolBar,
CMFCAutoHideButton* pBtn
);
Parameters
[in] pToolBar
[in] pBtn
Requirements
Header: afxdockablepane.h