Qt Signal Slot Different Thread
- Qt documentation states that signals and slots can be direct, queued and auto. It also stated that if object that owns slot 'lives' in a thread different from object that owns signal, emitting such signal will be like posting message - signal emit will return instantly and slot method will be called in target thread's event loop.
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As mentioned, each program has one thread when it is started. This thread is called the 'main thread' (also known as the 'GUI thread' in Qt applications). The Qt GUI must run in this thread. All widgets and several related classes, for example QPixmap, don't work in secondary threads.
hey i heard that there is something called qt signals you can use it to change the GUI out side the main thread coz when i try to change it i get an error that i cant change the gui out of the main thread but i need it to edit the progressbar value so if anyone had a way to do it plz tell me
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Recommended Answers
Hi,
Qt Signal Slot Thread Context
Try something like this:
my_form.py:
Qt Signal Slot Example
Jump to PostThis code is a simulation (hint) that drives your progress bar for testing purposes..
You have to replace it with code you want to move the progress bar with.
Badly copied piece of code. It should be:
Jump to Post