CMFCToolBarButton::m_bWholeText
Specifies whether the button displays its full text label even if it does not fit in the bounding rectangle.
BOOL m_bWholeText;
Remarks
If this data member is set to TRUE, the framework displays the full text label by enlarging the button. Otherwise, the framework truncates and appends an ellipsis (...) to the text label.
Requirements
Header: afxtoolbarbutton.h