Member variable XbpToolBarButton():top Foundation
Specifies the position of the upper border of a tool bar button.
The instance variable :top contains a numeric value that specifies the vertical position of the upper border of a toolbar button object. The position in :top is specified relative to the toolbar's display rectangle. The instance variable is read-only, i.e. it cannot be changed by an Xbase++ application. The value is computed as follows:
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