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tqt3/examples/opengl/overlay
Timothy Pearson 0f92dd542b
Fix native TQt3 accidental conversion to tquit
13 years ago
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README Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731 13 years ago
globjwin.cpp Fix native TQt3 accidental conversion to tquit 13 years ago
globjwin.h Test conversion to TQt3 from Qt3 8c6fc1f8e35fd264dd01c582ca5e7549b32ab731 13 years ago
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README

The overlay example

This example program shows how to use OpenGL overlays with the Qt OpenGL
Extension. It contains a QGLWidget with a relatively expensive
redrawing operation, and rubber-band drawing in the overlay plane.
Using the overlay has the advantage that the rubber-band may be drawn
and erased without damaging the image in the main plane, so costly
redraws are avoided.