Point is (and I should clarify in the post): qt doesn't document which functions do and don't update the GUI, and you have no guarantees when calling an arbitrary Qt function that it won't. This is practical advice to stay safe. A seemingly innocuous Qt function might internally update the GUI, as shown in the example.
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Point is (and I should clarify in the post): qt doesn't document which functions do and don't update the GUI, and you have no guarantees when calling an arbitrary Qt function that it won't. This is practical advice to stay safe. A seemingly innocuous Qt function might internally update the GUI, as shown in the example.