Windows 10
A Microsoft operating system that runs on personal computers and tablets.
11,195 questions
Windows 10 20H2 is also hit by that problem.
ListView / Explorer.exe Deadlock, in a DPI Aware V2 context, showing column default tooltip
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A. Weber
1
Reputation point
any ListView (with report viewstyle) f.e. also file explorer - if the window is moved closed to the border of another monitor with a different DPI settings.
If we make a column taller so that the content will not fit in it - usually the CommonControls ListView will show the content as tooltip - but in this case it happens that the application dead locks with 100% core usage - instead of showing the tooltip.
We are able to reproduce this behavior with Windows 10 version 21H2.
In the attached Screenshot we have move a explorer window close to the border between the two displays - and reduced the with of the last modified date/time column - so that the popuphint should become visible if we move the mouse over the values - but instead it happens that explorer.exe no longer responses and uses one CPU core @100% load.