Creates and initializes an auto-hide button.
virtual BOOL Create(
   CMFCAutoHideBar* pParentBar,
   CDockablePane* pAutoHideWnd,
   DWORD dwAlignment 
);
Parameters
- [in] pParentBar 
 A pointer to the parent toolbar.
- [in] pAutoHideWnd 
 A pointer to a CDockablePane object. This auto-hide button hides and shows that CDockablePane.
- [in] dwAlignment 
 A value that specifies the alignment of the button with the main frame window.
Return Value
Nonzero if successful; otherwise 0.
Remarks
When you create a CMFCAutoHideButton object, you must associate the auto-hide button with a specific CDockablePane. The user can use the auto-hide button to hide and show the associated CDockablePane.
The dwAlignment parameter indicates where the auto-hide button resides in the application. The parameter can be any one of the following values:
- CBRS_ALIGN_LEFT 
- CBRS_ALIGN_RIGHT 
- CBRS_ALIGN_TOP 
- CBRS_ALIGN_BOTTOM 
Requirements
Header: afxautohidebutton.h