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Size of the child widget is always fixed in MainWindow constructor.

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  • S Offline
    S Offline
    Simula
    wrote on last edited by
    #1

    Hi.

    I have this setup in UI designer

    designer setup

    And I'm trying to get the size of the OpenGLWidget in MainWindow contructor but I always get the fixed size of a very small window (100,30) instead of a normal size of my widget. Even when the first auto resize event happens the widget size is still the same.

    Only when I manually resize the window, does the size change to the normal size e.g. (900,600)

    How do I get the proper size of my widget control when I start the program?

    Thanks.

    JonBJ 1 Reply Last reply
    0
    • S Simula

      Hi.

      I have this setup in UI designer

      designer setup

      And I'm trying to get the size of the OpenGLWidget in MainWindow contructor but I always get the fixed size of a very small window (100,30) instead of a normal size of my widget. Even when the first auto resize event happens the widget size is still the same.

      Only when I manually resize the window, does the size change to the normal size e.g. (900,600)

      How do I get the proper size of my widget control when I start the program?

      Thanks.

      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by
      #2

      @Simula
      I don't know anything specific about "OpenGLWidget", but in Qt you don't get widget sizes during constructors. I don't know when your "first auto resize event happens". In general, you have to wait for showEvent() to get any reliable idea of widget sizes, as that's when everything sizes/readjusts.

      1 Reply Last reply
      2
      • S Offline
        S Offline
        Simula
        wrote on last edited by
        #3

        Thanks, that was it.

        1 Reply Last reply
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