virtual L_BOOL LAnnToolBar::IsButtonVisible(uButton)
Determines whether the specified tool on the annotation toolbar is currently visible.
The constant that specifies the tool. For a list of possible values, refer to Annotation Toolbar Buttons.
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
When a tool is invisible, other tools in the toolbar are arranged so that no gaps are left, and so that their order is maintained (left-to-right and top-to-bottom, just as text would wrap).
For an example, refer to LAnnToolBar::Create.
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