Bug 579410 - Blur UI during DND operation on Table widget
Summary: Blur UI during DND operation on Table widget
Status: NEW
Alias: None
Product: Platform
Classification: Eclipse Project
Component: SWT (show other bugs)
Version: 4.24   Edit
Hardware: PC Windows 10
: P3 critical (vote)
Target Milestone: ---   Edit
Assignee: Platform-SWT-Inbox CLA
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Reported: 2022-03-25 01:14 EDT by Bhavana Bhongale CLA
Modified: 2022-03-25 01:22 EDT (History)
1 user (show)

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Blur and Bold Text during drag operation (172.96 KB, image/png)
2022-03-25 01:14 EDT, Bhavana Bhongale CLA 		no flags Details
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Description Bhavana Bhongale CLA 2022-03-25 01:14:27 EDT 
Created attachment 288289 [details]
Blur and Bold Text during drag operation

We have an application based on Eclipse, which contains a Table and Tree viewer. The application is dpiUnaware and we have enabled gdiScaling for the application, to reduce the blurry fonts.
More about gdiScaling - https://blogs.windows.com/windowsdeveloper/2017/05/19/improving-high-dpi-experience-gdi-based-desktop-apps/

With gdiScaling enabled, the table rows on which mouse is dragged turn bold during the drag operation and restore after the drop is completed.

The issue can be reproduced with the DND SWT sample after enabling gdiScaling for Eclipse. This can be done from the Eclipse application Properties dialog -> Compatibility -> Click on "Change High DPI settings" -> Check the "Override high DPI scaling behavior" checkbox. -> Scaling performed by: Select System(Enhanced) from the drop down. Using this setting now the scaling will be performed by Windows OS.
Comment 1 Bhavana Bhongale CLA 2022-03-25 01:22:16 EDT 
Issue can be reproduced using the SWT Example Launcher -> select Drag and drop from standalone application. Before running the Example you need to launch Eclipse using the (System Enhanced) Compatibility setting.