+ NavDialogOptions mNavOptions;
+ NavObjectFilterUPP mNavFilterUPP = NULL;
+ NavPreviewUPP mNavPreviewUPP = NULL ;
+ NavReplyRecord mNavReply;
+ AEDesc* mDefaultLocation = NULL ;
+ bool mSelectDefault = false ;
+
+ ::NavGetDefaultDialogOptions(&mNavOptions);
+
+ mNavFilterUPP = nil;
+ mNavPreviewUPP = nil;
+ mSelectDefault = false;
+ mNavReply.validRecord = false;
+ mNavReply.replacing = false;
+ mNavReply.isStationery = false;
+ mNavReply.translationNeeded = false;
+ mNavReply.selection.descriptorType = typeNull;
+ mNavReply.selection.dataHandle = nil;
+ mNavReply.keyScript = smSystemScript;
+ mNavReply.fileTranslation = nil;
+
+ // Set default location, the location
+ // that's displayed when the dialog
+ // first appears
+
+ if ( mDefaultLocation ) {
+
+ if (mSelectDefault) {
+ mNavOptions.dialogOptionFlags |= kNavSelectDefaultLocation;
+ } else {
+ mNavOptions.dialogOptionFlags &= ~kNavSelectDefaultLocation;
+ }
+ }
+
+ OSErr err = ::NavChooseFolder(
+ mDefaultLocation,
+ &mNavReply,
+ &mNavOptions,
+ NULL,
+ mNavFilterUPP,
+ 0L); // User Data
+
+ if ( (err != noErr) && (err != userCanceledErr) ) {
+ m_path = wxT("") ;
+ return wxID_CANCEL ;
+ }
+
+ if (mNavReply.validRecord) { // User chose a folder
+
+ FSRef folderInfo;
+ AEDesc specDesc ;
+
+ OSErr err = ::AECoerceDesc( &mNavReply.selection , typeFSRef, &specDesc);
+ if ( err != noErr ) {
+ m_path = wxT("") ;
+ return wxID_CANCEL ;
+ }
+ folderInfo = **(FSRef**) specDesc.dataHandle;
+ if (specDesc.dataHandle != nil) {
+ ::AEDisposeDesc(&specDesc);
+ }
+
+ m_path = wxMacFSRefToPath( &folderInfo ) ;
+ return wxID_OK ;
+ }
+ return wxID_CANCEL;