Add missing API docs for wxRichTextCtrl-related classes

Document functions used in RichText sample code.

Closes #23970.

interface/wx/richtext/richtextformatdlg.h

@@ -163,6 +163,11 @@ public:
     virtual bool ApplyStyle(wxRichTextCtrl* ctrl, const wxRichTextRange& range,
                             int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO|wxRICHTEXT_SETSTYLE_OPTIMIZE);
 
+    /**
+        Apply attributes to the object being edited, if any.
+    */
+    virtual bool ApplyStyle(wxRichTextCtrl* ctrl, int flags = wxRICHTEXT_SETSTYLE_WITH_UNDO);
+
     /**
         Creation: see wxRichTextFormattingDialog() "the constructor" for
         details about the parameters.
@@ -240,6 +245,17 @@ public:
     */
     int GetOptions() const { return m_options; }
 
+    /**
+        If editing the attributes for a particular object, such as an image,
+        set the object so the code can initialize attributes such as size correctly.
+    */
+    void SetObject(wxRichTextObject* obj) { m_object = obj; }
+
+    /**
+        Returns the object of which the attributes are to edited (if any).
+     */
+    wxRichTextObject* GetObject() const;
+
     /**
         Returns @true if the given option is present.
     */

interface/wx/richtext/richtextstyles.h

@@ -557,6 +557,11 @@ public:
         form is for convenient setting of the most commonly-used attributes.
     */
     void SetLevelAttributes(int level, const wxRichTextAttr& attr);
+
+    /**
+        Convenience function for setting the major attributes for a list level specification.
+     */
+    void SetAttributes(int i, int leftIndent, int leftSubIndent, int bulletStyle, const wxString& bulletSymbol = wxEmptyString);
 };
 
 
@@ -581,11 +586,21 @@ public:
     */
     wxRichTextStyleSheet();
 
+    /**
+        Copy constructor.
+     */
+    wxRichTextStyleSheet(const wxRichTextStyleSheet& sheet);
+
     /**
         Destructor.
     */
     virtual ~wxRichTextStyleSheet();
 
+    /**
+        Copies given style sheet.
+     */
+    void Copy(const wxRichTextStyleSheet& sheet);
+
     /**
         Adds a definition to the character style list.
     */