Another overload of ControlToolBar::OnRecord taking bool...

... so that it's called directly where needed without the roundabout of
SetInt in an event, and there is no checking of the state of a button first

src/ProjectAudioManager.cpp

@@ -330,11 +330,8 @@ void DoPause( AudacityProject &project )
 
 void DoRecord( AudacityProject &project )
 {
-   wxCommandEvent evt;
-   evt.SetInt(2); // 0 is default, use 1 to set shift on, 2 to clear it
-
    auto &controlToolBar = ControlToolBar::Get( project );
-   controlToolBar.OnRecord(evt);
+   controlToolBar.OnRecord(false);
 }
 
 void DoLockPlayRegion( AudacityProject &project )

src/menus/TransportMenus.cpp

@@ -247,11 +247,8 @@ void OnRecord(const CommandContext &context)
 void OnRecord2ndChoice(const CommandContext &context)
 {
    auto &project = context.project;
-   wxCommandEvent evt;
-   evt.SetInt(1); // 0 is default, use 1 to set shift on, 2 to clear it
-
    auto &controlToolBar = ControlToolBar::Get( project );
-   controlToolBar.OnRecord(evt);
+   controlToolBar.OnRecord(true);
 }
 
 void OnTimerRecord(const CommandContext &context)

src/toolbars/ControlToolBar.cpp

@@ -985,19 +985,20 @@ void ControlToolBar::OnRecord(wxCommandEvent &evt)
    // Here instead we reduplicate some logic (from CommandHandler) because it isn't
    // normally used for buttons.
 
-   // Code from CommandHandler start...
-   AudacityProject *p = &mProject;
-
    bool altAppearance = mRecord->WasShiftDown();
-   if (evt.GetInt() == 1) // used when called by keyboard shortcut. Default (0) ignored.
-      altAppearance = true;
-   if (evt.GetInt() == 2)
-      altAppearance = false;
+   OnRecord( altAppearance );
+}
 
+void ControlToolBar::OnRecord(bool altAppearance)
+// STRONG-GUARANTEE (for state of current project's tracks)
+{
    bool bPreferNewTrack;
    gPrefs->Read("/GUI/PreferNewTrackRecord", &bPreferNewTrack, false);
    const bool appendRecord = (altAppearance == bPreferNewTrack);
 
+   // Code from CommandHandler start...
+   AudacityProject *p = &mProject;
+
    if (p) {
       const auto &selectedRegion = ViewInfo::Get( *p ).selectedRegion;
       double t0 = selectedRegion.t0();

src/toolbars/ControlToolBar.h

@@ -77,6 +77,7 @@ class ControlToolBar final : public ToolBar {
    void OnPlay(wxCommandEvent & evt);
    void OnStop(wxCommandEvent & evt);
    void OnRecord(wxCommandEvent & evt);
+   void OnRecord(bool altAppearance);
    bool DoRecord(AudacityProject &project,
       const TransportTracks &transportTracks, // If captureTracks is empty, then tracks are created
       double t0, double t1,