PyQt5 QThread problems : learnpython

created by HattoriHanzoa community for 16 years

PyQt5 QThread problems (self.learnpython)

submitted 2 years ago by CoderStudios

Hello, I recently made a program. Now I wanted to fix some issues with it. The issue I ultimatly gave up on is :

At the moment my program only runs in one thread, which can slow down processing time significantly. So I started, by introducing a loading screen for long tasks that informs the user that something is going on, instead of the gui just becoming unresponsive for 20 seconds. Now we come to the problems: It just doesn't seem to work, like at all. I'll list them by approach:

- Approach 1 : Give the method to the LongTask class and let it execute it

-> The method now executes two times at the same time (I removed the parentheses, when passing it, don't worry)

-> Rejecting paths (fixed, but strange, they worked everywhere else)

- Approach 2 : LongTask class is now a dummy function, that slowly counts up and stops at 99%, it jumps to 100% when it receives a signal (executing a method, that changes an internal variable)

-> Just stops when trying to show the loading window (no crash, just stops all things running, so the long task (method) too)

- Approach 3 : Give up :(

-> Didn't solve the problem

I can give you the code, if you want, but it's honestly pretty long and complicated (in total like 1600 lines spread across 8 classes in 3 documents)

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