Method OnDeletePreset

modules/import-export/mod-ffmpeg/ExportFFmpegOptions.cpp:977–1001

///
///
void ExportFFmpegOptions::OnDeletePreset(wxCommandEvent& WXUNUSED(event))
{
   wxComboBox *preset = dynamic_cast<wxComboBox*>(FindWindowById(FEPresetID,this));
   wxString presetname = preset->GetValue();
   if (presetname.empty())
   {
      AudacityMessageBox( XO("You can't delete a preset without name") );
      return;
   }

   auto query = XO("Delete preset '%s'?").Format( presetname );
   int action = AudacityMessageBox(
      query,
      XO("Confirm Deletion"),
      wxYES_NO | wxCENTRE);
   if (action == wxNO) return;

   mPresets->DeletePreset(presetname);
   long index = preset->FindString(presetname);
   preset->SetValue(wxEmptyString);
   preset->Delete(index);
   mPresetNames.erase(
      std::find( mPresetNames.begin(), mPresetNames.end(), presetname )
   );
}

///
///