Transfer inputs from qdialog to mainwindow

Question

In qdialog i put some input that i need in the mainwindow, how can i get them? my program is something like this, I have a qdialog that must open before mainwindow, I put there some input and click ok, and then the mainwinodw opens using those inputs.

here's the dialog.cpp code:

#include "dialog.h"
#include "ui_dialog.h"

#include "vtkBMPReader.h"

// Define the length of the volume
void Dialog::bmprange()
{
// Getting some proprieties for the lenght of the volume
QString XMAX=ui->lineEdit->text();
double xMax=XMAX.toDouble();
QString YMAX=ui->lineEdit_2->text();
double yMax=YMAX.toDouble();
QString ZMAX=ui->lineEdit_3->text();
double zMax=ZMAX.toDouble();
QString XMMAX=ui->lineEdit_4->text();
double xMMax=XMMAX.toDouble();
QString YMMAX=ui->lineEdit_5->text();
double yMMax=YMMAX.toDouble();
QString ZMMAX=ui->lineEdit_6->text();
double zMMax=ZMMAX.toDouble();

if (xMax==0 || yMax==0 || zMax==0 || xMMax==0 || yMMax==0 || zMMax==0)
{
    ui->label_17->setText("Error: invalid measures");
}
else
{
// Using vtkBMPReader to read all the 128 bmp slices
  vtkBMPReader *bmp= vtkBMPReader::New();
    bmp->SetDataByteOrderToLittleEndian();
    bmp->SetFilePrefix ("/home/matt/Desktop/ouBMP/exemplo");
    bmp->SetFilePattern("%s%d.bmp");
    bmp->SetFileNameSliceSpacing(1);
    bmp->SetNumberOfScalarComponents(3);
    bmp->SetDataOrigin(0,0,0);
    bmp->SetDataSpacing(xMMax/(xMax-1.0),xMMax/(yMax-1.0),xMMax/(zMax-1.0));
    bmp->SetDataExtent(0,xMax-1.0,0,yMax-1.0,1,zMax);
    bmp->Update();
    ui->label_17->setText("Valid measures");
}
}

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

  // Control volume measures
    // Making the lineedit objects only accept numbers
    ui->lineEdit->setValidator(new QIntValidator(this));
    ui->lineEdit_2->setValidator(new QIntValidator(this));
    ui->lineEdit_3->setValidator(new QIntValidator(this));
    ui->lineEdit_4->setValidator(new QDoubleValidator(this));
    ui->lineEdit_5->setValidator(new QDoubleValidator(this));
    ui->lineEdit_6->setValidator(new QDoubleValidator(this));
    connect(ui->lineEdit, SIGNAL(textChanged(QString)), this, SLOT(bmprange()));
    connect(ui->lineEdit_2, SIGNAL(textChanged(QString)), this, SLOT(bmprange()));
    connect(ui->lineEdit_3, SIGNAL(textChanged(QString)), this, SLOT(bmprange()));
    connect(ui->lineEdit_4, SIGNAL(textChanged(QString)), this, SLOT(bmprange()));
    connect(ui->lineEdit_5, SIGNAL(textChanged(QString)), this, SLOT(bmprange()));
    connect(ui->lineEdit_6, SIGNAL(textChanged(QString)), this, SLOT(bmprange()));
}

Dialog::~Dialog()
{
    delete ui;
}

void Dialog::changeEvent(QEvent *e)
{
    QDialog::changeEvent(e);
    switch (e->type()) {
    case QEvent::LanguageChange:
        ui->retranslateUi(this);
        break;
    default:
        break;
    }
}

how can i get bmp, xMax, ... to use in mainwindow

score 1 · Accepted Answer · answered Aug 29 '12 at 11:45

1

I don't speak C++, so sorry for the lack of details. Here's what I'd do:

Catch the closeEvent that you should have when you close your dialog. If your dialog has a OK button, you can use its clicked signal.
Connect it to a particular slot whose functions are (1) to retrieve the texts of all your dialog's QLineEdit in a single object (a QStringList, for example) and (2) to actually close your dialog.
Store the content of this QStringList as an attribute of your main window, or as an independent object you can retrieve from your main window.

answered Aug 29 '12 at 11:45

Pierre GM

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the problem is that dialog and mainwindow are in different files – SamuelNLP Aug 30 '12 at 08:52
yould it just be to include "dialog.h" in plainvolume.cpp? – SamuelNLP Aug 30 '12 at 08:59
Can't you define some kind of common module where to store your signals? – Pierre GM Aug 30 '12 at 09:01
I created a function as a slot and the slot is like this `void Dialog::getvalues() { double list[6]; list[0]=xMax; list[1]=yMax; list[2]=zMax; list[3]=xMMax; list[4]=yMMax; list[5]=zMMax; }` – SamuelNLP Aug 30 '12 at 09:20
and added dialog.h as an include in planevolume.cpp, and then I call it as Dialog::getvalues(); but i get that i can't call a function without object. – SamuelNLP Aug 30 '12 at 09:21

Transfer inputs from qdialog to mainwindow

1 Answers1