Control the widget using WId

  • Hi,
    can anybody let me know what are all the functionalities that can be controlled using just the WId.
    I have a problem and i have access to only WId of the widget.
    i try to find out address of the widgetto control but i cannot do so, because i am accessing the widget in another process.

    WId QWidget::winId () const

  • Hi!

    winId() is a handle to a window (HWND data type). You can use it with window management functions (Windows only). "Here": is a list of them.

    Many of this functions are already used by Qt, so there is usually no need of using them.

  • Thanks for the reply.

    but i am working on linux and the problem is the video images are not cleaned from the widget , is there any way to refresh or clear the widget before some thing else is launched.

    i tried


    the color is changed but still the previous image contents is still seen.
    please help..

  • I don't have much experience with Linux native windows, but I'm pretty sure that you don't need this function.

    There is a "QWidget::repaint": that should do the trick. There is also an options of overloading paint if necessary.
    Are you doing this on graphics scene or purely on widget?

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