(C++) QFileDialogExample3

 

 

QFileDialog example 3: compare class and convenience function from GUI is a QFileDialog example.

 

• View a screenshot of 'CppQFileDialogExample3' (png)
• Download the Qt Creator project 'CppQFileDialogExample3' (zip)

Technical facts

 

Application type(s)

• Desktop application

Operating system(s) or programming environment(s)

• Lubuntu 15.04 (vivid)

IDE(s):

• Qt Creator 3.1.1

Project type:

• GUI application

C++ standard:

• C++11

Compiler(s):

• G++ 4.9.2

Libraries used:

• Qt: version 5.4.1 (32 bit)
• STL: GNU ISO C++ Library, version 4.9.2

 

 

 

 

 

Qt project file: ./CppQFileDialogExample3/CppQFileDialogExample3.pro

 

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QT       += core gui greaterThan(QT_MAJOR_VERSION, 4): QT += widgets QMAKE_CXXFLAGS += -std=c++11 TEMPLATE = app SOURCES += \   main.cpp \   dialog.cpp HEADERS  += dialog.h FORMS    += dialog.ui

 

 

 

 

 

./CppQFileDialogExample3/dialog.h

 

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#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();    private slots:   void on_button_1_clicked();   void on_button_2_clicked(); private:   Ui::Dialog *ui; }; #endif // DIALOG_H

 

 

 

 

 

./CppQFileDialogExample3/dialog.cpp

 

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#include "dialog.h" #include <cassert> #include <sstream> #include <QFileDialog> #include "ui_dialog.h" Dialog::Dialog(QWidget *parent) :   QDialog(parent),   ui(new Ui::Dialog) {   ui->setupUi(this); } Dialog::~Dialog() {   delete ui; } void Dialog::on_button_1_clicked() {   QFileDialog d;   //enum ViewMode { Detail, List };   d.setViewMode(QFileDialog::Detail);   //enum FileMode { AnyFile, ExistingFile, Directory, ExistingFiles, DirectoryOnly };   d.setFileMode(QFileDialog::ExistingFiles);   //enum AcceptMode { AcceptOpen, AcceptSave };   d.setAcceptDrops(QFileDialog::AcceptOpen);   //enum Option { ShowDirsOnly, DontResolveSymlinks, DontConfirmOverwrite, DontUseSheet, DontUseNativeDialog, ReadOnly, HideNameFilterDetails }   d.setOptions(QFileDialog::ReadOnly);   d.exec();   std::stringstream s;   if (d.result() == QDialog::Accepted)   {     s << "Number of files selected: " << d.selectedFiles().size() << '\n';     const auto v = d.selectedFiles();     for (auto f: v) s << f.toStdString() << '\n';   }   else   {     assert(d.result() == QDialog::Rejected);     s << "Dialog closed with cancel or close\n";   }   ui->text_1->setPlainText(s.str().c_str()); } void Dialog::on_button_2_clicked() {   const auto v = QFileDialog::getOpenFileNames();   std::stringstream s;   s << "Number of files selected: " << v.size() << '\n';   for (auto f: v) s << f.toStdString() << '\n';   ui->text_2->setPlainText(s.str().c_str()); }

 

 

 

 

 

./CppQFileDialogExample3/main.cpp

 

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#include "dialog.h" #include <QApplication> int main(int argc, char *argv[]) {   QApplication a(argc, argv);   Dialog w;   w.show();      return a.exec(); }