Chaining 2 connect statements
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Hi everyone,
I've been trying to connect 2 functions with signal and slots but i can't seem to do it that i've put as buttons.It is basically 2 parsing functions that i want to work in tandem but i can't seem to write a third connect statement that will join all of them together.
connect(innerPage, SIGNAL(loadFinished(bool)), SLOT(parse(bool)));
connect(innerPage2, SIGNAL(loadFinished(bool)), SLOT(parse2(bool)));I thought it would be simply
connect(this,SIGNAL(parse(bool)),innerPage2,SLOT(on_pushButton_clicked());Can someone enlighten me?
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Hi everyone,
I've been trying to connect 2 functions with signal and slots but i can't seem to do it that i've put as buttons.It is basically 2 parsing functions that i want to work in tandem but i can't seem to write a third connect statement that will join all of them together.
connect(innerPage, SIGNAL(loadFinished(bool)), SLOT(parse(bool)));
connect(innerPage2, SIGNAL(loadFinished(bool)), SLOT(parse2(bool)));I thought it would be simply
connect(this,SIGNAL(parse(bool)),innerPage2,SLOT(on_pushButton_clicked());Can someone enlighten me?
hi @GCDX
first, I'm guessing its a copy past error, but those two connect statements are wrong, they are missing a 4th parameter.connect(innerPage, SIGNAL(loadFinished(bool)), SLOT(parse(bool)));
connect(innerPage2, SIGNAL(loadFinished(bool)), SLOT(parse2(bool)));I thought it would be simply
connect(this,SIGNAL(parse(bool)),innerPage2,SLOT(on_pushButton_clicked());Can someone enlighten me?
parse(bool)is obviously a SLOT, you connected to it as a slot previously, so you can't "listen" to the signal or connect to to itQObject::Connect allows the combination of SIGNAL -> SLOT, SIGNAL -> SIGNAL and since Qt5 and the new Syntax SIGNAL -> Any function, SIGNAL -> Lambda expression.
But in all cases the origin has to be a defined QT-SIGNAL you cant connect 2 functions together.
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@J-Hilk its not a copy paste error, it works, the lack of parameter put it to default this i think. So theres no solution to this???
The idea i'm trying to achieve is, i need to access a webpage to parse some information and the parsed information is needed as arguments to access another webpage so that i can parse more information. Currently, this works with 2 buttons, one button to parse the first webpage and the second button when i want to parse more information from the next webpage.
I was trying to automate it, but can't find a solution.
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@J-Hilk its not a copy paste error, it works, the lack of parameter put it to default this i think. So theres no solution to this???
The idea i'm trying to achieve is, i need to access a webpage to parse some information and the parsed information is needed as arguments to access another webpage so that i can parse more information. Currently, this works with 2 buttons, one button to parse the first webpage and the second button when i want to parse more information from the next webpage.
I was trying to automate it, but can't find a solution.
@GCDX
you're right, theres actually a 3 parameter overload of connectbool QObject::connect(const QObject * sender, const char * signal, const char * method, Qt::ConnectionType type = Qt::AutoConnection) constWell, you can simply go the way of a custom signal, that you emit at the end of the
parse(bool)slot, or since slots are basicaly functions, you can just callon_pushButton_clicked()at the end ofparse
