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Language Reference
TOP-ONLY Attribute
Indicates whether another frame or window can overlay a frame or window.
Data Type: LOGICALAccess: Readable/WriteableApplies To: Frame, WindowIf the TOP-ONLY attribute is TRUE for the frame, no other frame can overlay it.
If more than one window is designated as TOP-ONLY, they will all stay on top of all non-TOP-ONLY windows, but each can be brought to the foreground. That is, a TOP-ONLY window is always on top of all non-TOP-ONLY windows, but is not necessarily on top of all TOP-ONLY windows.
The TOP-ONLY behavior will be temporarily suspended while a dialog box is displayed to prevent the TOP-ONLY windows from covering the dialog-box.
A window cannot have both the TOP-ONLY and ALWAYS-ON-TOP attributes set to TRUE. Setting the TOP-ONLY attribute to TRUE will set the ALWAYS-ON-TOP attribute to FALSE. The default value of the TOP-ONLY attribute is FALSE.
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