Startup time of desktop application (ensureStaticOpenGLContext?)



  • We have a desktop application on Windows 7.
    Qt 4.8.: double click on icon --> application starts immediately (customers noticed with some kind of wow!)
    Qt 5.4.: double click on icon --> ... application starts a little later (less than half a second but not immediately)

    So it is ok, but not really wow! Profiling around there is a call to

    QWindowsIntegrationPrivate::ensureStaticOpenGLContext()

    At this time we do not have an OpenGL window. This will start only after user input. Then half a second is ok.

    1. Is it true that there is a OpenGL create command even if no OpenGL is used at start time
    2. How do I get back the quick start wow! ?

    Thanks!
    Thomas


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