Qt 应用程序不响应鼠标和键盘事件

Question

I recently upgraded my application from using a dynamic build of QT to a static. However, ever since the upgrade I am not able to:

• Trigger mouse events: I am not able to click any widget, there is simply no animation (window is static).
• Trigger keyboard events: I can not enter a value in the default focused QSpinBox.

Some remarks:

• When the upgrade was performed, no style was set for the application (however in the dynamic build, there was a style). I fixed this by using application.setStyle("fusion")
• I see the cursor of the QSpinBox blinking. In my experience this indicates that the GUI-thread is not "stuck" somewhere.

Answer 1

I found the problem: the GUI thread was not the main thread (this is also being logged)