Subclassed QPlainTextEdit, how can call in other class?

[Panoss]

This is my main that creates the RepairDevices window:

#include "repairdevices.h"
#include <QtWidgets>



int main(int argc, char * argv[])
{
    Q_INIT_RESOURCE(books);

    QApplication app(argc, argv);    

    RepairDevices win;
    win.show();

    return app.exec();
}

RepairDevices.cpp has slot setDirty:

public slots:    
    void setDirty(QString text);

I have subclassed QPlainTextEdit, to a class named 'notifierText'.
I have promoted a QPlainTextEdit, named sn_txt, to this class.
The sn_txt is in my form, created with Qt Designer.

This is my class' source:

notifierText::notifierText(QWidget *parent) : QPlainTextEdit(parent)
{
    QString thistext = this->toPlainText();
    connect( this, SIGNAL(textChanged(QString)), parent, SLOT(setDirty(thistext)) );    
}

Obviously, the 'parent, SLOT(...' is wrong.
Ho can I call the setDirty function in RepairDevices.cpp?

[VRonin]

It's RepairDevices that has to connect to notifierText not the other way around

[Panoss]

I did it like this in RepairDevices constructor:
connect(ui.sn_txt,SIGNAL(textChanged(QString)),this,SLOT(setDirty(QString)));

But I get a warning:
QObject::connect: No such signal QPlainTextEdit::textChanged(QString)

And it's not working.
What am I doing wrong?

[mrjj]

@Panoss
Hi
Does notifierText have a Q_OBJECT macro ?

[Panoss]

Hi mrjj.
I demoted it to QPlainTextEdit, I don't use the notifierText class.

[mrjj]

@Panoss
Hi :)
ok so sn_txt is now a 100% normal QPlainTextEdit and not your class?
Did you clean, rebuild all after changing back?

[Panoss]

Yes it 's a pure QPlainTextEdit .
I cleaned and rebuild but the same happens.

[mrjj]

@Panoss
show the new current code then.
It normally just works.

[Panoss]

This is the connection in RepairDevices' constructor:

connect(ui.sn_txt,SIGNAL(textChanged(QString)),this,SLOT(setDirty(QString)));

This is the declaration of the function:

public slots:
    void setDirty(QString txt);

This is the function:

 void RepairDevices::setDirty(QString txt)
 {
     qDebug() << "text=" << txt;   
 }

[Panoss]

When I change to textChanged(), it works.
But I don't have the text of the sn_txt.

And I see here: void QPlainTextEdit::textChanged()

[mrjj]

@Panoss said in Subclassed QPlainTextEdit, how can call in other class?:

textChanged

i dont think it has version where it emits the whole text. lineEdit has.

so you must use QPlainTextEdit::textChanged() and

void RepairDevices::setDirty()
{
qDebug() << "text=" << ui->plaintext->toPlainText();
}

[Panoss]

The reason I subclassed it, was because I wanted the class to connect to RepairDevices 's slot.
(that is, the code: connect blah blah to be in the class)
This is not possible, so it's canceled.
Thank you for your help.

[mrjj]

@Panoss

Well the normal signal does not have QString but in a subclass
you could easy make a new signal that would have and
then emit it in the subclass and it would be as you wanted.