Sending QString to Dialog from MainWindow

[chronix]

I have a QString in my MainWindow, now when the user click a button a new dialog popup. This dialog has a QLabel which i need to setText with the QString saved in MainWindow! how do i do it?
Thanks in advance!

[Chris Kawa]

Either modify the constructor of the dialog to accept additional parameter or add a setter method to your dialog class.

[chronix]

ok if go with modifying the constructor, where do i pass the argument?
in MainWindow.cpp i use the following to launch the dialog
@Dialog text(this)
test.exec();@

[qxoz]

You can modify constructor like this:
@Dialog ::Dialog (QWidget *parent, QString text) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
ui->label->setText(text);
}@
don't forget set default value for text in *.h file
and
@Dialog text(this, someText);
test.exec();@

or you can add new method for settings text:
@void Dialog::setLabelText(QString value)
{
ui->label->setText(value);
}@

[SGaist]

It should rather be:

@
Dialog ::Dialog (QString text, QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
ui->label->setText(text);
}
@

to follow Qt's pattern

[qxoz]

Yes you're right, thanks :)

[chronix]

Thanks guys really. I tried the same thing bt i forgot to make the changes in the .h file! thats way it dint work! :D