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Qt Designer doesn't open with double-click of .ui file (User Interface Files) in VS2017 Solution Explorer



  • Qt Designer doesn't open with double-click of .ui file (User Interface Files) in VS2017 Solution Explorer. VS2017 is running on Windows 10 OS, and I have Qt5.12.3 installed plus Qt VS Tools v2.7.1 installed to Visual Studio. I can launch Qt Designer from Qt VS Tools menu inside VS2017 and load .ui file and edit and save - no problem. But Designer won't launch upon double-click .ui file in Solution Explorer; gives "Th system cannot find the file specified" error message. Also, this is a C++ Linux Cross Compile project using VisualGDB.


  • Lifetime Qt Champion

    @dbeerbohm Did you assotiate *.ui files with the designer?


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