How to prevent TPanel (used for context) from repaiting while
resizing?
lazarus / 70-OpenGL

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Pascal · 2017-07-03 11:55

I have a form with a panel which is used for a GL-Context (dglOpenGL).
The context is refreshed every 40 ms by a thread.
If i now resize the form, the GL-Context is hidden by the repainted
Panel/Window.
How can i prevent this behaviour, so that the context is visible while
resizing.

Using TOpenGLControl is not an option here as this doesn't seem to
work with rendering in threads.

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Pascal · 2017-07-03 12:03

Quote from: Pascal on July 03, 2017, 01:55:08 pmUsing TOpenGLControl
is not an option here as this doesn't seem to work with rendering in
threads.

Well, in fact this was the solution! I used TOpenGLControl to create
my context on. The context created by TOpenGLControl will not be used.

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Thaddy · 2017-07-03 14:29

Tcontrol.beginupdate and Tcontrol.endupdate is designed for that.