Get text from QCombobox.

[dragon]

Hello Anyone,

I have qt-4.7

I have a Mainwindow with QComboBox called diaCombobox.
I have also severall QDialogs.
Now i want to retrieve text from my MainWindow QComboBox (diaCombobox) en paste into my QDialog.
How can i connect to my MainWindow from my QDialog to get the text from my MainWindow QCombobox (diaCombobox).

mainwindow.h

class MainWindow : public QMainWindow
{
    Q_OBJECT
 
public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
    QComboBox *diaCombobox;
etc..

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    ~MainWindow();
    QComboBox *diaCombobox;
etc..

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mainwindow.cc

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
 
    diaCombobox = ui->diaCombobox;
etc....

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    diaCombobox = ui->diaCombobox;
etc....

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dialog.h
[CODE]
class SlotDialog : public QDialog
{
Q_OBJECT

public:
SlotDialog(QWidget *parent = 0);
//int n;
//QString ae;
//QString vc;
//QString voed;
~SlotDialog();

public slots:
void changed();

private:
Ui::SlotDialog *ui;
MainWindow *parent;
QTableWidget *slotTable;
etc...
[CODE]

dialog.cc

SlotDialog::SlotDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::SlotDialog)
 
{
    ui->setupUi(this);
    connect(ui->slotTable, SIGNAL(cellClicked(int,int)), this, SLOT(changed()));
}
 
etc..

SlotDialog::SlotDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::SlotDialog)

{
    ui->setupUi(this);
    connect(ui->slotTable, SIGNAL(cellClicked(int,int)), this, SLOT(changed()));
}

etc..

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thanks in advanced.

[KillGabio]

this->ui->comboBox->currentText ();

greetings

[dragon]

Hello,

this->ui->comboBox->currentText ();

This give my a error because in my QDialog i don't have a QCombobox.
Only in my MainWindow.

dialo.cc

SlotDialog::SlotDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::SlotDialog)
 
{
    ui->setupUi(this);
    connect(ui->slotTable, SIGNAL(cellClicked(int,int)), this, SLOT(changed()));
}
 
this->ui->comboBox->currentText ();  this is pointing to my connect ().

SlotDialog::SlotDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::SlotDialog)

{
    ui->setupUi(this);
    connect(ui->slotTable, SIGNAL(cellClicked(int,int)), this, SLOT(changed()));
}

this->ui->comboBox->currentText ();  this is pointing to my connect ().

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[ChrisW67]

It really depends on exactly what you want to achieve and how the objects are create/related.

Here are some options that rely only on standard C++:

• Put a public getter method in your QMainWindow sub-class and call that from the dialog code
• Put a public setter method in your QDialog sub-class and call that from the main window code at appropriate times.
• Pass the value of the combo box into the dialog at construction

This uses Qt:

• Connect the "void currentIndexChanged ( const QString & text )" signal of the combo box to a receiving slot in the dialog.