learning all thing about signals and slots

Hi

I want to know and learn all thing about signals ans slots and connecting of them. are there any references that explain completely. Thanks for any help.

http://doc.qt.io/qt-5/signalsandslots.html

Quote:

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Originally Posted by Qiieha

http://doc.qt.io/qt-5/signalsandslots.html

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Qiieha, thanks but in this Doc., for example there is no explanation about connecting a signal to another signal that we could connect a signal to another signal. are there other references that have more examples and complete explanation?

You cannot connect a signal to another signal.. you can may be check QSignalMapper documentation..

Quote:

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Originally Posted by Vikram.Saralaya

You cannot connect a signal to another signal.. you can may be check QSignalMapper documentation..

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We could. for example:

Code:

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connect(lineEdit, SIGNAL(textChanged(const QString &)),
this, SIGNAL(updateRecord(const QString &)));

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Quote:

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Originally Posted by Vikram.Saralaya

You cannot connect a signal to another signal.. you can may be check QSignalMapper documentation..

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Yes you can. This causes the second signal to be emitted whenever the first one is, and is in fact quite useful to simulate "exporting" a signal from a private object.

@yeye_olive I never encountered a case for that! Thanks for that info.. might be useful someday :)
@Alex22 my bad sorry!