passing data when closing a dialog

[jimiq]

I have a main dialog which invokes another dialog (using .exec()) to get the user to enter a string when the close button is pressed I want to pass that string back to the main dialog. How do I do this? I tried emiting a signal but this crashes the application.

[Lykurg]

after executing the dialog, get the value of your lineedit through a self defined getter method. E.g.:
MyDialog dlg;
switch(dlg.exec())
{
//...
dlg.getMyLineEditValue();
}

[jano_alex_es]

using references is another way to do it.

[jimiq]

using references is another way to do it.

Do you have an example of this?

[jano_alex_es]

in the constructor of teh dialog, just send a variable by reference.

for instance:



class CmyDialog : public QDialog
{
public:
CmyDialog (QString& myString, QWidget *parent = 0);
~CmyDialog ();

//change myString in your code
}




QString strIwantMyDataBack;
CmyDialog _MyDialog(strIwantMyDataBack, this);
_MyDialog.exec();



For your interest (http://en.wikipedia.org/wiki/Reference_%28C%2B%2B%29)