show native-looking (with 3D shadow) help tooltips for context help, if possible, using wxCHMHelpController

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@39725 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/helpchm.h

@@ -20,7 +20,6 @@ class WXDLLEXPORT wxCHMHelpController : public wxHelpControllerBase
 {
 public:
     wxCHMHelpController(wxWindow* parentWindow = NULL): wxHelpControllerBase(parentWindow) { }
-    virtual ~wxCHMHelpController();
 
     // Must call this to set the filename
     virtual bool Initialize(const wxString& file);
@@ -40,6 +39,11 @@ public:
 
     wxString GetHelpFile() const { return m_helpFile; }
 
+    // helper of DisplayTextPopup(), also used in wxSimpleHelpProvider::ShowHelp
+    static bool ShowContextHelpPopup(const wxString& text,
+                                     const wxPoint& pos,
+                                     wxWindow *window);
+
 protected:
     // Append extension if necessary.
     wxString GetValidFilename(const wxString& file) const;