Round 7 of wx3 changes

I believe the FileDialog is now complete and consistent across
all 3 platforms.

src/export/Export.cpp

@@ -564,7 +564,7 @@ bool Exporter::GetFilename()
                     mFilename.GetPath(),
                     mFilename.GetFullName(),
                     maskString,
-                    wxFD_SAVE | wxRESIZE_BORDER | FD_NO_ADD_EXTENSION);
+                    wxFD_SAVE | wxRESIZE_BORDER);
       mDialog = &fd;
       mDialog->PushEventHandler(this);
 
@@ -580,6 +580,10 @@ bool Exporter::GetFilename()
       }
 
       mFilename = fd.GetPath();
+      if (mFilename == wxT("")) {
+         return false;
+      }
+
       mFormat = fd.GetFilterIndex();
       mFilterIndex = fd.GetFilterIndex();
 
@@ -597,10 +601,6 @@ bool Exporter::GetFilename()
          }
       }
 
-      if (mFilename == wxT("")) {
-         return false;
-      }
-
       wxString ext = mFilename.GetExt();
       wxString defext = mPlugins[mFormat]->GetExtension(mSubFormat).Lower();
 

src/export/Export.h

@@ -27,7 +27,6 @@ class DirManager;
 class WaveTrack;
 class TrackList;
 class MixerSpec;
-class FileDialog;
 class TimeTrack;
 class Mixer;