It doesn't matter if the signal is emitted in your own code or in Qt's code, the emit always works the same way.
The values passed to the signal at emit are the values the slots receive.
E.g. if the emit code looks like this
emit loadFinished(false);
emit loadFinished(false);
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or if it looks like this
bool someStatus = false;
emit loadFinished(someStatus);
bool someStatus = false;
emit loadFinished(someStatus);
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then the slot will receive "false".
The signal/slot connection just transports the values to the slot, the value itself is determined by the code that emits the signal.
Cheers,
_
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