Modal dialog over OpenGL widget: openGL surface doesn't get redrawn and a mess is left behind
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Hello,
I have a QGLWidget, and on top of it sometimes modal dialogs. In rare cases (depending on the Platform/settings), moving the modal dialog doesn't redraw the openGL window's content, and leaves a mess behind, in the openGL view. What can I do?
As stated, this happens in rare cases. On Windows, Mac and Linux in works fine in 90% of tested machines.The paintEvent and paintGL functions are overridden, and empty (I am rendering on a regular time base). But they anyway don't get called when the modal dialog moves over it.
Thanks for any insight!
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Hi,
Are you using exec to show your dialog ? If so, you could try with open
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Thank you for your reply.
Yes, I am using exec to show the dialog, but open gives the same result.
What else could I try? The problem is that those artifacts are not expected for a professional application, but I am at a loss in trying to find the reason and to fix it.
Thanks again -
Hi @floatingWoods,
There are many known issues with QGLWidget. It is now deprecated, replaced with QOpenGLWidget. Try that instead, and see if it helps.
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Thank you for your reply.
Yes, that is probably the best to do. It will however require to switch to Qt5.4, and that is a larger endeavour. Will try that.Thanks again!
