added SetLabelText() and EscapeMnemonics()

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57689 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/control.h

@@ -80,15 +80,50 @@ public:
     */
     static wxString RemoveMnemonics(const wxString& str);
 
+    /**
+        Escape the special mnemonics characters ("&") in the given string.
+
+        This function can be helpful if you need to set the controls label to a
+        user-provided string. If the string contains ampersands, they wouldn't
+        appear on the display but be used instead to indicate that the
+        character following the first of them can be used as a control mnemonic.
+        While this can sometimes be desirable (e.g. to allow the user to
+        configure mnemonics of the controls), more often you will want to use
+        this function before passing a user-defined string to SetLabel().
+        Alternatively, if the label is entirely user-defined, you can just call
+        SetLabelText() directly -- but this function must be used if the label
+        is a combination of a part defined by program containing the control
+        mnemonics and a user-defined part.
+
+        @param text
+            The string such as it should appear on the display.
+        @return
+            The same string with the ampersands in it doubled.
+     */
+    static wxString EscapeMnemonics(const wxString& text);
+
     /**
         Sets the item's text.
 
         Any "&" characters in the @a label are special and indicate that the
         following character is a @e mnemonic for this control and can be used to
         activate it from the keyboard (typically by using @e Alt key in
-        combination with it).
-        To insert a literal ampersand character, you need to double it, i.e. use "&&".
+        combination with it). To insert a literal ampersand character, you need
+        to double it, i.e. use use "&&". If this behaviour is undesirable, use
+        SetLabelText() instead.
     */
     void SetLabel(const wxString& label);
+
+    /**
+        Sets the item's text to exactly the given string.
+
+        Unlike SetLabel(), this function shows exactly the @a text passed to it
+        in the control, without interpreting ampersands in it in any way.
+        Notice that it means that the control can't have any mnemonic defined
+        for it using this function.
+
+        @see EscapeMnemonics()
+     */
+    void SetLabelText(const wxString& text);
 };