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Ying
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UltraGrid not showing data unless mouse hover over order screen scroll
posted

Hi,

One of our client reports a issue where the data in the UltraGrid doesn't show unless the user mouse hover over the grid, or scroll the grid.

We have UltraGrid on the tab that displays patients data. The tab also has an option panel and other controls. When the client switch between different patients, the data on the options panel and in the grid is refreshed to show the current patient data. Randomly and intermittently when they switch to a patient, data will be missing from the grid (but the options panel and other controls display correctly). Then if the user hover mouse over the grid and moves the mouse, the data appears, as if the mouse movement cause the UI to render.

Client accesses the application through Citrix, they said the issue only happened through citrix. We haven't been able to reproduce the issue in house yet.

I've attached screenshot.

The UltraGrid Version=13.1.20131.2060

Client didn't have this issue with older version of the application which uses much older version of the UltraGrid.

Please let me know if you've seen this issue before and if there is any resolution.

Thanks,
Ying

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  • 48586
    posted

    Hello ,

     

    As far as the WinGrid is concerned, it has no interaction with Citrix, so I don't see how this could be related to the grid specifically. My understanding of how Citrix works is that it just transfers an image of the screen to the client and translates mouse messages from the client to the server. So it seem that Citix just gets a screenshot a little bit earlier, before Grid’s text were painted, so that is why when you scroll or do something which will makes the Citrix to get new “screen shot” you see the data. This also explains why this happens sporadically.

     

    Please let me know if you have any further questions.

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