c++ qt Dialog 'OK' button after Mainwindow set image - c++

Question

I want new form from 'OK' click after
From Mainwindow label Set image
image path : ./org/org.jpg
addim.h
private slots:
void on_buttonBox_accepted(); <---- 'OK' button
addim.cpp
void AddIm::on_ADdimg_cliekd()
system("raspistill -w 480 -h 360 -q 20 -o aaa.jpg -t 2");
QPixmap pix("./org/org.jpg);
ui2->QWidjet_org->setPixmap(pix); <--- QWidjet_org this label

Answer 1

I managed to do a minimal code that works:
MainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include "dialog.h"
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
public slots:
//This will change the image in the main window
void buttonHere();
//This will change the image in the dialog box
void buttonDialog();
private:
Ui::MainWindow *ui;
Dialog dialog;
//We need to save the image in QImage so it doesn't disappear
QImage image;
};
#endif // MAINWINDOW_H
MainWindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
QObject::connect(ui->pushButton_here, SIGNAL(clicked(bool)), SLOT(buttonHere()));
QObject::connect(ui->pushButton_dialog, SIGNAL(clicked(bool)), SLOT(buttonDialog()));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::buttonHere()
{
//We load the image
image.load(ui->label->text());
//We set the label image
ui->label_2->setPixmap(QPixmap::fromImage(image));
}
void MainWindow::buttonDialog()
{
//We call the function that changes the dialog image
dialog.setImage(ui->label->text());
//We show the dialog
dialog.show();
}
Dialog.h
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
namespace Ui {
class Dialog;
}
class Dialog : public QDialog
{
Q_OBJECT
public:
explicit Dialog(QWidget *parent = 0);
~Dialog();
//This function changes the image
void setImage(QString path);
private:
Ui::Dialog *ui;
//We need to save the image in QImage so it doesn't disappear
QImage image;
};
#endif // DIALOG_H
Dialog.cpp
#include "dialog.h"
#include "ui_dialog.h"
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
ui->setupUi(this);
}
Dialog::~Dialog()
{
delete ui;
}
void Dialog::setImage(QString path)
{
//We load the image
image.load(path);
//We set the label image
ui->label->setPixmap(QPixmap::fromImage(image));
}
You get this result
http://i.imgur.com/sguOqLS.png
http://i.imgur.com/p2rCK9f.png

Answer 2

You should create a resource file, import your picture in it and then use the following example code:
QPixmap pixmap_btn_hw(":/new/myPrefix/btn_hardware.png");
QIcon ButtonIcon_hw(pixmap_btn_hw);
ui->hardware_btn->setIcon(ButtonIcon_hw);
ui->hardware_btn->setIconSize(pixmap_btn_hw.rect().size());
ui->hardware_btn->setFocusPolicy(Qt::NoFocus);
To start an external program, "sytem()" is a bad idea. The following is much better:
QProcess *prpr = new QProcess();
prpr->setProcessChannelMode(QProcess::MergedChannels);
prpr->start("raspistill -w 480 -h 360 -q 20 -o aaa.jpg -t 2");
if (!prpr->waitForFinished())
{
// there was an error
}
else
{
// command worked!
}