Get Value from a LineEdit in the MainWindow to be use in a dialog

iyustlop

Hi all:

My problem is that I want to read the value of a LineEdit in the Main Windows and then use the value in a dialog.

This should be the first step, in case that Line has a wrong Value or is Empty an error is thrown.

Could I getthis value during the Slot and then pass to the dialog ?

public:
explicit AddVisit(QWidget *parent = 0, Qstring number);
~AddVisit();

Please, could someone tell me how to pass the variable after click?

void MainWindow::on_createDatePushButton_clicked()
{
QString number = ui->lineEditNumber->text();
AddVisit myAddVisit;
myAddVisit.setModal(true);
myAddVisit.exec();
}

SGaist

Hi,

It depends on how you are going to use that dialog.

iyustlop

@SGaist The idea is have the QString Number as key in a table. Two different tables but with the same key.

SGaist

How are you using that dialog ?

Are you showing it permanently ? On demand ? Are you re-creating it each time ? Can that value be changed while the dialog is shown ?

jsulm

@iyustlop Why not just pass it as parameter to the dialog constructor?

void MainWindow::on_createDatePushButton_clicked()
{
QString number = ui->lineEditNumber->text();
AddVisit myAddVisit(number);
// myAddVisit.setModal(true); <-- This is not needed as exec() already shows the dialog as modal dialog
myAddVisit.exec();
}

iyustlop

@jsulm thank you for the idea. The problem is how i have to modify the construtor to include this parameter

AddVisit::AddVisit(QWidget *parent, QString number) :
QDialog(parent),
ui(new Ui::AddVisit)
{
ui->setupUi(this);
}

This way, I have an error due to this constructor is not known.

SGaist

Did you also modify the declaration ?

By the way, the common implementation is to have parent as last parameter.

iyustlop

The result that works:

AddVisit::AddVisit(QString number, QWidget *parent, QString number) :
QDialog(parent),
ui(new Ui::AddVisit)
{
ui->setupUi(this);
}

With this costructor everything works.

Thank you very much indeed for the help.

SGaist

Don't you have one number parameter too many ?