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Using Overlays
Overlays are useful in situations where you want to preserve an underlying image while displaying some temporary information. Examples for this are popup menus, annotations, or rubber-banding. This section explains overlays and shows you how to them, discussing the following topics:
- Introduction to Overlays
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- How to Create Overlays
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- Overlay Troubleshooting
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- Rubber Banding
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- Using Popup Menus With the GLwMDrawingArea Widget
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