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();
}

MyDialog dlg;
switch(dlg.exec())
{
  //...
  dlg.getMyLineEditValue();
}

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[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
}

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

//change myString in your code
}

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

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

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