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Update 479874-WPF Touch Stops Working After Prolonged Use of Popups.md

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Vivek Mishra 2017-10-18 13:52:18 -07:00 committed by GitHub
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## WPF Touch Stops Working After Rapid/Prolonged Use Of Popups
# WPF Touch Stops Working After Rapid/Prolonged Use Of Popups
### Symptoms
## Symptoms
On a touch or stylus-enabled machine, WPF applications may see a loss of touch or stylus after rapid or prolonged use of popups (e.g. ComboBoxes, DropDown Menus).
### Cause
## Cause
A change to disposal of HwndSource in .NET 4.7 caused Popups to not correctly cleanup touch resources. This eventually can lead to loss of touch/stylus interaction.
### Resolution
This issue is fixed for all supported OS platforms prior to Windows 10 Fall Creators Update. The fix for Windows 10 Fall Creators Update is expected in a future servicing update.
## Resolution
This issue is fixed for all supported OS platforms prior to Windows 10 Fall Creators Update. The fix for Windows 10 Fall Creators Update is expected in a future servicing update.