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Form and controls flicker when maximezed and having the ribbon
posted

Hello,

I have a WinForms application that flickers (a few pixels left and the right again) when having a ribbon on it and being maximized.

Prerequisites:

  1. Create a WinForms app.
  2. Add a UltraToolbarsManager and set ShowRibbon.
  3. Add a few controls on the form.
  4. Start the App and maximize the form.
  5. Restore and minimize another App (App2, for ex. notepad) (but ensure App is focused when App2 is minimized).
  6. Repeat step 5 and see how the App Form is drawn, i.e. it flickers left and right.

If the UltraToolbars has ShowRibbon false, it is ok, is not flickering. If it has no UltraToolbar at all, it is ok also. If the App form is not maximized, it is ok again!

So it is something with the way the Ribbon draws the Form and the controls on it when the form that has the Ribbon is maximized. The effect is visually unpleasing.

This is happening on WinXP.

Any way to solve it?

Thanks.

  • 2077
    Offline posted

    This issue was fixed in the last hotfix, 2022, for Infragistics 2008.2.

    After applying the hotfix, make sure to set to false the property "Specific version" on each Infragistics dll you use in your application.

     HTH,

    Emanuel