qt4: add .vlm at the end of the export file if needed.

modules/gui/qt4/dialogs/vlm.cpp

@@ -264,10 +264,22 @@ void VLMDialog::addVLMItem()
 /* TODO : VOD are not exported to the file */
 bool VLMDialog::exportVLMConf()
 {
-    QString saveVLMConfFileName = QFileDialog::getSaveFileName(
-            this, qtr( "Save VLM configuration as..." ),
+    QFileDialog* qfd = new QFileDialog( this, qtr( "Save VLM configuration as..." ),
                                         qfu( config_GetHomeDir() ),
                                         qtr( "VLM conf (*.vlm);;All (*)" ) );
+    qfd->setFileMode( QFileDialog::AnyFile );
+    qfd->setAcceptMode( QFileDialog::AcceptSave );
+    qfd->setConfirmOverwrite( true );
+
+    bool exported = false;
+    if( qfd->exec() == QDialog::Accepted )
+    {
+        QString saveVLMConfFileName = qfd->selectedFiles().first();
+        QString filter = qfd->selectedFilter();
+
+        // If *.vlm is selected, add .vlm at the end if needed
+        if( filter.contains( "VLM" ) && !saveVLMConfFileName.contains( ".vlm" ) )
+            saveVLMConfFileName.append( ".vlm" );
 
         if( !saveVLMConfFileName.isEmpty() )
         {
@@ -275,9 +287,12 @@ bool VLMDialog::exportVLMConf()
             QString command = "save \"" + saveVLMConfFileName + "\"";
             vlm_ExecuteCommand( p_vlm , qtu( command ) , &message );
             vlm_MessageDelete( message );
-        return true;
+            exported = true;
         }
-    return false;
+    }
+
+    delete qfd;
+    return exported;
 }
 
 void VLMDialog::mediasPopulator()