RadWindow lags while dragging

3 posts, 0 answers
  1. chp
    chp avatar
    11 posts
    Member since:
    Oct 2012

    Posted 23 Feb 2012 Link to this post


    we have a problem with the RadWindow while dragging it with the mouse.
    It only happens when you have "show window content while dragging" enabled in the windows-system preferences.

    I think I don't have to attach an example, because it also happens in the "WPF Controls Examples".
    The problem only occurs when the RadWindow is very large. So if you resize the RadWindow from the "Frist Look" example to cover nearly the entire size of the monitor and try to drag it around with the mouse, it lags behind the mouse enormously.

    If you have a high resolution (e.g. 1920 x 1080), a big RadWindow (which covers nearly the entire screen) lags more then a big RadWindow on 1024x768 while dragging.

    Is there a way to fix this?
  2. Miroslav Nedyalkov
    Miroslav Nedyalkov avatar
    1718 posts

    Posted 24 Feb 2012 Link to this post


    The reason for this could be that we use a transparent window by default which involves heavy calculations. We need this as some of the default themes contain partially or entirely transparent elements. You could disable this by setting the RadWindowInteropHelper.AllowTransparency to false to the RadWindow control.

    Hope this helps.

    All the best,
    Miroslav Nedyalkov
    the Telerik team
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  4. chp
    chp avatar
    11 posts
    Member since:
    Oct 2012

    Posted 24 Feb 2012 Link to this post

    Thanks! That solved the problem!
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