Mac Forum / Programming / CodeWarrior / May 2004

Here's a good one.

I have a common routine for prompting the user for a file:

Boolean
CDocument::ChooseFile(
  SInt16   inTypeCount,
  OSType*  inFileTypes,
  FSSpec&  outFileSpec)
{
  LFileTypeList theTypesList(inTypeCount,inFileTypes);
   PP_StandardDialogs::LFileChooser chooser;
   NavDialogOptions* options = chooser.GetDialogOptions();
  if (options != nil) {
     options->dialogOptionFlags =  kNavDefaultNavDlogOptions
                             + kNavSelectAllReadableItem;
  }
  return(chooser.AskChooseOneFile(theTypesList,outFileSpec));
}

Now, if I call this from within the document all is well, but if I call
it from a dialog box it doesn't allow some file types to be chosen, The
dialog calling routine includes:

  static OSType theTypes[] = {kQTFileTypeWave,kQTFileTypeMIDI,
                    kQTFileTypeSystemSevenSound,kQTFileTypeAIFF,
                    kQTFileTypeSoundDesignerII,kQTFileTypeAudioCDTrack};
  static SInt16 theTypeCount = 6;
 
  FSSpec theFileSpec;
  if (mDocument->ChooseFile(theTypeCount,theTypes,theFileSpec)) {
     // Do stuff

But only AIFF files show as selectable. Whereas the document version
(which allows movie files too) looks like:

  static OSType theTypes[] = {kQTFileTypeAIFF, kQTFileTypeAIFC,
kQTFileTypeDVC, kQTFileTypeMIDI, kQTFileTypeMovie, kQTFileTypeWave,
kQTFileTypeSystemSevenSound, kQTFileTypeAVI, kQTFileTypeSoundDesignerII,
kQTFileTypeAudioCDTrack};
  static SInt16 theTypeCount = 10;
 
  FSSpec theFileSpec;
  if (ChooseFile(theTypeCount,theTypes,theFileSpec)) {
     // Do stuff

And all is well, they can all be chosen.

I realise that Nav Services was developed to stop developers doing
things simply, but I can't see where I'm going wrong. Help!

Rev. Andy

PS I know there's no error handling.