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Thread: Qt application is completely white

  1. #1
    Join Date
    Nov 2014
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    Qt products
    Qt4
    Platforms
    Windows

    Default Qt application is completely white

    Hello,

    There is a user of my software that has reported that when he executes the software it is completely white, however, some widgets are still doing things, like showing menus.

    This GIF image shows the issue:
    https://imgur.com/ThcejuF

    My software uses the Qt5::OpenGL, so I compiled and sent him all the OpenGL examples (hellogl2, hellogles3, cube, etc), and most of these application have the same problem:

    I tested out the programs and here are the results:
    2dpainting.exe - All white
    contextinfo.exe - All renders fine I guess, with the exception of both windows on the right that are all white
    cube.exe - All white
    hellogl2.exe - All white
    hellogles3.exe - Does not start, crashes upon trying to execute
    hellowindow.exe - All white
    paintedwindow.exe - All white
    qopenglwidget.exe - All white
    qopenglwindow.exe - All white, and crashes after around a second
    textures.exe - All white
    threadedqopenglwidget.exe - All white, and crashes after around a second too
    These are his specs:
    Processor: Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz
    Video Card: Intel(R) HD Graphics 3000
    RAM: 4.0 GB
    OS: Microsoft Windows 7 Home Premium Edition Service Pack 1 (build 7601), 64-bit

    Is this a known issue? Or has anybody experienced this issue? Is there a way to fix this?

    Thank you in advance for your help!
    pixaeiro
    pixaeiro
    http://www.pixaflux.com
    Non-destructive Image Editor

  2. #2
    Join Date
    Jan 2008
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    Qt products
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    Default Re: Qt application is completely white

    The level of OpenGL support on your user's machine is probably not as high as you are using in your app, therefore the driver can't display any OpenGL.

    There are OpenGL methods to test for and return information on the level of GL support on the machine where the program is running (see this stackoverflow post).
    <=== The Great Pumpkin says ===>
    Please use CODE tags when posting source code so it is more readable. Click "Go Advanced" and then the "#" icon to insert the tags. Paste your code between them.

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