Access to components of UI from the function of QtConcurrent::run(foo)
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Hello friends,
I want to access to components of UI (like as QLineEdit, QLabel, QTableView, etc) from the "foo" function in QtConcurrent::run(foo).
But I cant, because the component must be static variable and I dont want.
How can I access to them?Thanks a lot.
Ya Ali. -
Hi,
No, you can't because manipulating GUI element outside the main thread is not allowed. What you can do however is use signals and slots to communicate with the GUI stuff
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Hi dear SGaist,
Thanks for your response.I searched and most of uses said signal and slot must be used.
I implemented this approach but did not work! Because I can`t emit the signal from the thread (because signal function is not static).
How can I do that? May you give a simple code?Thanks.
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You can use a QObject wrapper class that will call the static function and then emit the signal needed
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Can you give me a simple code example?
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Wait, this might be a complication you don't need, did you took a look at the QFutureWatcher class ?
