QFileDialog freezes

[FreddyKay]

Hey guys!

I got the fllowing problem, which is new for me. I want the user to enter a file location and file name, that I can use to create a file obviously. I got the following code for this:

void SpacecraftDataView::saveToFile(){
 
   QString fileName = QFileDialog::getSaveFileName(this, "Save Data", "", "Textdatei (*.txt);;All Files(*)");
 
   if(fileName.isEmpty()){
      return;
   }else{
      QTextDocumentWriter writer(fileName);
      if(!writer.write(&dataProcessor->getDocument())){
         QMessageBox::information(this, tr("Unable to write to file"), "Writing to file was not possible.");
         return;
      }else{
         //! \todo something here
      }
   }
 
}

void SpacecraftDataView::saveToFile(){

   QString fileName = QFileDialog::getSaveFileName(this, "Save Data", "", "Textdatei (*.txt);;All Files(*)");
   
   if(fileName.isEmpty()){
      return;
   }else{
      QTextDocumentWriter writer(fileName);
      if(!writer.write(&dataProcessor->getDocument())){
         QMessageBox::information(this, tr("Unable to write to file"), "Writing to file was not possible.");
         return;
      }else{
         //! \todo something here
      }
   }

}

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Note it does not execute past the getSaveFileName part. This does open a QFileDialog which then freezes in the middle of its execution, see screenshot:



So what am I doing wrong?

[StrikeByte]

have you tried to set a start folder for the dialog?

[d_stranz]

Try putting "*.*" in your "All Files" filter. It's possible that's what is causing the hangup. If you don't specify a starting directory, it will default to the app's current directory.

[FreddyKay]

I tried both and it was both not helping.

What did solve the problem was setting the option

QFileDialog::DontUseNativeDialog.

QFileDialog::DontUseNativeDialog.

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So I suppose there is something interfering with Qts Native Dialog. I suspect it is some kind of Plugin, though I dont know a way how to find that plugin. Any Ideas?

[ChrisW67]

The native dialog is not part of Qt but part of your operating system/window manager. Once Qt opens that dialog what it does as it initialises is not within Qt control.