Add wxTextEntryDialog::SetMaxLength().

Allow restricting the maximal number of characters that can be entered in
wxTextEntryDialog.

Closes #15158.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73832 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/textdlg.h

@@ -159,6 +159,16 @@ public:
     void SetTextValidator(wxTextValidatorStyle style = wxFILTER_NONE);
     //@}
 
+    /**
+        This function sets the maximum number of characters the user can enter
+        into this dialog.
+
+        @see wxTextEntry::SetMaxLength()
+
+        @since 2.9.5
+    */
+    void SetMaxLength(unsigned long len);
+
     /**
         Sets the default text value.
     */