Trouble with connect()...

[AlexanderAlexander]

I wish to connect/sync the vertical scroll bars of 2 plain text edits together like so in C++:

connect(this->textEdit_T->verticalScrollBar, SIGNAL(valueChanged(int)), this->textEdit_S->verticalScrollBar, SLOT(setValue(int)));
connect(this->textEdit_S->verticalScrollBar, SIGNAL(valueChanged(int)), this->textEdit_T->verticalScrollBar, SLOT(setValue(int)));

However, I get this error:

error C3867: 'QAbstractScrollArea::verticalScrollBar': non-standard syntax; use '&' to create a pointer to member

And when I add "&"' to the senders I get this error:

error C2276: '&': illegal operation on bound member function expression

My apologies, this is probobaly a very simple mix up but I am a little confused.

[sierdzio]

@alexanderalexander said in Trouble with connect()...:

this->textEdit_T->verticalScrollBar

This is a function so it has to end with (), thus:

this->textEdit_T->verticalScrollBar()

[sierdzio]

Also, I strongly recommend using new signal-slot connection syntax, it will avoid you many troubles! https://doc.qt.io/qt-5/signalsandslots-syntaxes.html

[AlexanderAlexander]

@sierdzio
My apologies, I meant to include this in my example above:

connect(this->textEdit_T->verticalScrollBar(), SIGNAL(valueChanged(int)), this->textEdit_S->verticalScrollBar(), SLOT(setValue(int)));
	connect(this->textEdit_S->verticalScrollBar(), SIGNAL(valueChanged(int)), this->textEdit_T->verticalScrollBar(), SLOT(setValue(int)));

This ^ causes another error, telling me that there is no overloaded function (of the class I call this in)
that matches the argument list. When I try to compile it then tells me this:

Error C2664 'QMetaObject::Connection QObject::connect(const QObject *,const char *,const char *,Qt::ConnectionType) const': cannot convert argument 1 from 'QScrollBar *' to 'const QObject *' KOALA C:\WorkSpace\KOALA\EPRateMod.cxx 85

Note: I am including QObject

[Christian Ehrlicher]

@alexanderalexander said in Trouble with connect()...:

cannot convert argument 1 from 'QScrollBar *' to 'const QObject *'

You forgot to include QScrollBar header file. And please don't use old signals/slot syntax.

[jsulm]

@alexanderalexander The error message is talking about connect() with different parameters than what you have in these two lines - are you sure the error message comes from one of these lines?
You really should try new connect syntax as @sierdzio suggested.

[AlexanderAlexander]

Thanks for all the help guys, figured it was just a stupid mistake like that. Just wanted to get this working and then I'll take everyone's advice and use the newer signal/slot syntax.