Qt/Widgets/FileDialog

FileDialog.cpp

#include <QApplication>
 
#include "form.h"
 
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow window;
    window.show();
    return app.exec();
}

form.cpp

#include <QtGui>
 
#include "form.h"
 
#include <iostream>
#include <string>
 
#include <QFileDialog>
#include <QString>
 
MainWindow::MainWindow(QMainWindow* parent)
    : QMainWindow(parent)
{
    ui.setupUi(this);
 
    connect( this->ui.btnSave, SIGNAL( clicked() ), this, SLOT(btnSave_clicked()) );
    connect( this->ui.btnOpen, SIGNAL( clicked() ), this, SLOT(btnOpen_clicked()) );
}
 
void MainWindow::btnOpen_clicked()
{
  //get a filename to open
  QString fileName = QFileDialog::getOpenFileName(this,
     tr("Open Image"), "/home/doriad", tr("Image Files (*.png *.jpg *.bmp)"));
 
  std::cout << "Got filename: " << fileName.toStdString() << std::endl;
 
}
 
void MainWindow::btnSave_clicked()
{
 
  //set a filename to save
  QString fileName = QFileDialog::getSaveFileName(this,
     tr("Open Image"), "/home/doriad", tr("Image Files (*.png *.jpg *.bmp)"));
 
  std::cout << "Set filename: " << fileName.toStdString() << std::endl;
}

form.h

 #ifndef CALCULATORFORM_H
 #define CALCULATORFORM_H
 
#include <QMainWindow>
 
 #include "ui_main.h"
 
 class MainWindow : public QMainWindow
 {
     Q_OBJECT
 
 public:
     MainWindow(QMainWindow *parent = 0);
 
 private slots:
     void btnSave_clicked();
     void btnOpen_clicked();
 
 private:
     Ui::MainWindow ui;
 };
 
 #endif

main.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>800</width>
    <height>600</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <widget class="QPushButton" name="btnSave">
    <property name="geometry">
     <rect>
      <x>250</x>
      <y>290</y>
      <width>91</width>
      <height>28</height>
     </rect>
    </property>
    <property name="text">
     <string>Save</string>
    </property>
   </widget>
   <widget class="QPushButton" name="btnOpen">
    <property name="geometry">
     <rect>
      <x>250</x>
      <y>190</y>
      <width>91</width>
      <height>27</height>
     </rect>
    </property>
    <property name="text">
     <string>Open</string>
    </property>
   </widget>
  </widget>
  <widget class="QMenuBar" name="menubar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>800</width>
     <height>24</height>
    </rect>
   </property>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

CMakeLists.txt

cmake_minimum_required(VERSION 2.6)
 
PROJECT(FileDialog)
 
FIND_PACKAGE(Qt4 REQUIRED)
INCLUDE(${QT_USE_FILE})
 
include_directories(${include_directories} ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR})
 
QT4_WRAP_UI(UISrcs main.ui)
QT4_WRAP_CPP(MOCSrcs form.h)
 
ADD_EXECUTABLE(FileDialog FileDialog.cpp form.cpp ${MOCSrcs} ${UISrcs})
TARGET_LINK_LIBRARIES(FileDialog ${QT_LIBRARIES})