C++/Qt/Open File Dialog

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Open file dialog demo

<source lang="cpp"> /*

* Copyright (c) 2006-2007, Johan Thelin
* 
* All rights reserved.
* 
* Redistribution and use in source and binary forms, with or without modification, 
* are permitted provided that the following conditions are met:
* 
*     * Redistributions of source code must retain the above copyright notice, 
*       this list of conditions and the following disclaimer.
*     * Redistributions in binary form must reproduce the above copyright notice,  
*       this list of conditions and the following disclaimer in the documentation 
*       and/or other materials provided with the distribution.
*     * Neither the name of APress nor the names of its contributors 
*       may be used to endorse or promote products derived from this software 
*       without specific prior written permission.
* 
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
  1. include <QApplication>
  2. include <QFileDialog>

class Tester : public QWidget { public:

 void openFile()
 {
   QFileDialog::getOpenFileName( this, tr("Open Document"), QDir::currentPath(), tr("Document files (*.doc *.rtf);;All files (*.*)"), 0, QFileDialog::DontUseNativeDialog );
   QString filename = QFileDialog::getOpenFileName( 
       this, 
       tr("Open Document"), 
       QDir::currentPath(), 
       tr("Document files (*.doc *.rtf);;All files (*.*)") );
   if( !filename.isNull() )
   {
     qDebug( filename.toAscii() );
   }
 }
 
 void openFiles()
 {
   QStringList filenames = QFileDialog::getOpenFileNames( 
       this, 
       tr("Open Document"), 
       QDir::currentPath(), 
       tr("Documents (*.doc);;All files (*.*)") );
   if( !filenames.isEmpty() )
   {
     qDebug( filenames.join(",").toAscii() );
   }
 }
 
 void openDir()
 {
   QString dirname = QFileDialog::getExistingDirectory( 
       this, 
       tr("Select a Directory"), 
       QDir::currentPath() );
   if( !dirname.isNull() )
   {
     qDebug( dirname.toAscii() );
   }
 }
 
 void saveFile()
 {
   QString filename = QFileDialog::getSaveFileName( 
       this, 
       tr("Save Document"), 
       QDir::currentPath(), 
       tr("Documents (*.doc)") );
   if( !filename.isNull() )
   {
     qDebug( filename.toAscii() );
   }
 }

}; int main( int argc, char **argv ) {

 QApplication app( argc, argv );
 
 Tester t;
 
 t.openFile();
 t.openFiles();
 t.openDir();
 t.saveFile();
 
 return 0;

}


 </source>


Set filter for open file dialog

<source lang="cpp"> /*

* Copyright (c) 2006-2007, Johan Thelin
* 
* All rights reserved.
* 
* Redistribution and use in source and binary forms, with or without modification, 
* are permitted provided that the following conditions are met:
* 
*     * Redistributions of source code must retain the above copyright notice, 
*       this list of conditions and the following disclaimer.
*     * Redistributions in binary form must reproduce the above copyright notice,  
*       this list of conditions and the following disclaimer in the documentation 
*       and/or other materials provided with the distribution.
*     * Neither the name of APress nor the names of its contributors 
*       may be used to endorse or promote products derived from this software 
*       without specific prior written permission.
* 
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
  1. include <QApplication>
  2. include <QFileDialog>

class Tester : public QWidget { public:

 void openFile()
 {
   QFileDialog::getOpenFileName( this, tr("Open Document"), QDir::currentPath(), tr("Document files (*.doc *.rtf);;All files (*.*)"), 0, QFileDialog::DontUseNativeDialog );
   QString filename = QFileDialog::getOpenFileName( 
       this, 
       tr("Open Document"), 
       QDir::currentPath(), 
       tr("Document files (*.doc *.rtf);;All files (*.*)") );
   if( !filename.isNull() )
   {
     qDebug( filename.toAscii() );
   }
 }
 
 void openFiles()
 {
   QStringList filenames = QFileDialog::getOpenFileNames( 
       this, 
       tr("Open Document"), 
       QDir::currentPath(), 
       tr("Documents (*.doc);;All files (*.*)") );
   if( !filenames.isEmpty() )
   {
     qDebug( filenames.join(",").toAscii() );
   }
 }
 
 void openDir()
 {
   QString dirname = QFileDialog::getExistingDirectory( 
       this, 
       tr("Select a Directory"), 
       QDir::currentPath() );
   if( !dirname.isNull() )
   {
     qDebug( dirname.toAscii() );
   }
 }
 
 void saveFile()
 {
   QString filename = QFileDialog::getSaveFileName( 
       this, 
       tr("Save Document"), 
       QDir::currentPath(), 
       tr("Documents (*.doc)") );
   if( !filename.isNull() )
   {
     qDebug( filename.toAscii() );
   }
 }

}; int main( int argc, char **argv ) {

 QApplication app( argc, argv );
 
 Tester t;
 
 t.openFile();
 t.openFiles();
 t.openDir();
 t.saveFile();
 
 return 0;

}


 </source>