CMFCToolBarButton::IsFirstInGroup
Determines whether the button is in the first position in its button group.
virtual BOOL IsFirstInGroup() const;
Return Value
TRUE if the button is the first button in its button group; otherwise FALSE.
Remarks
This method defines a button group as a neighboring set of buttons that are positioned on the same row and are bounded by separators or the border of the toolbar. This method returns FALSE if the toolbar button refers to the Customize button. For more information about the Customize button, see CMFCToolBar::GetCustomizeButton.
Call the CMFCToolBarButton::IsLastInGroup method to determine whether the button is in the last position in its button group.
Requirements
Header: afxtoolbarbutton.h