Implemented wxStatusBar::Push/PopStatusText.

Implemented wxFrame::Push/PopSTatusText ( just forward to the status bar ).
Implemented wxFrame::DoGiveHelp, to show menu/toolbar help in the status bar.
Added Get/SetStatusBarPane to get/set the status bar pane the menu/toolbar help
  will be show in


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15339 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/frame.h

@@ -108,6 +108,8 @@ public:
     // forward these to status bar
     virtual void SetStatusText(const wxString &text, int number = 0);
     virtual void SetStatusWidths(int n, const int widths_field[]);
+    void PushStatusText(const wxString &text, int number = 0);
+    void PopStatusText(int number = 0);
 #endif // wxUSE_STATUSBAR
 
     // toolbar functions
@@ -151,6 +153,10 @@ public:
         { return FALSE; }
 #endif // no wxTopLevelWindowNative
 
+    // show help text (typically in the statusbar); show is FALSE
+    // if you are hiding the help, TRUE otherwise
+    virtual void DoGiveHelp(const wxString& text, bool show);
+
 protected:
     // the frame main menu/status/tool bars
     // ------------------------------------
@@ -189,6 +195,12 @@ protected:
     wxStatusBar *m_frameStatusBar;
 #endif // wxUSE_STATUSBAR
 
+    // set the status bar pane the help will be shown in
+    void SetStatusBarPane(int n) { m_statusBarPane = n; }
+    int GetStatusBarPane() const { return m_statusBarPane; }
+
+    int m_statusBarPane;
+
 #if wxUSE_TOOLBAR
     // override to update status bar position (or anything else) when
     // something changes