Opening application by double click
i have created QT application in visual studio,when i open the exe from output path by double clicking it shows the error like "the application was unable to start correctly"
There can be several reasons, like wrong PATH, missing VS redistribution pack, etc. Which error number 0xNNNNNNNN do you get?
Then you can just search for this number with the message in the internet. It's nothing Qt-specific I would guess.
If you didn't compile your application with statically linked Qt then you can't launch your application just by double clicking it. You need to copy required dynamic libraries(.dll) to the same folder where your .exe file is. Or use existing tools that copy required dependencies(.dll) for you http://doc.qt.io/qt-5/windows-deployment.html .
error number :0xc000007b