CMFCToolBarButton::IsWindowVisible
Determines whether the underlying window handle of the button is visible.
virtual BOOL IsWindowVisible();
Return Value
Nonzero if the underlying window handle of the button is visible; otherwise 0.
Remarks
This method returns nonzero if the styles attribute of the underlying window handle contains the WS_VISIBLE style. This method returns FALSE if the underlying window handle of the button is NULL.
Requirements
Header: afxtoolbarbutton.h