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[WPF 4] Win7 Touch not works on custom desktop (CreateDesktop, SwitchDesktop)

Posted By:      Posted Date: August 27, 2010    Points: 0   Category :WPF
 
I am working on an application which should run on a custom desktop created by the CreateDesktop Win32 method. The desktop switching and the custom desktop works well. My application uses WPF 4 with C# and should work on a Win7 based notebook with touchscreen. When running on the normal desktop everything works fine, but when I try to run it on my custom desktop the touch screen does something strange. When I try to click a button using touch, the button visually responds (so the buttons background will be light blue as normally under Vista/7), but the click event never occurs, if I click the button using the mouse everything works fine. > I did some tests and got the following results: [WPF and WinForms] Both mouse and touch events work well on the normal desktop in every case [WPF] Touch events DO NOT WORK on the custom desktop (for eaxmple TouchDown never fires) [WPF] Mouse events with the mouse work well on the custom desktop (Click with mouse) [WPF] Mouse events with touchscreen DO NOT WORK on the custom desktop (Click/Tap with finger) [WinForms] Mouse events with the mouse work well on the custom desktop (Click with mouse) [WinForms] Mouse events with touchscreen WORK WELL on the custom desktop (Click/Tap with finger) > I have also tried some other apps on the custom desktop: Paint works well, also with multi-touch. Touch Keyboard works well. Windows can b


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