Allow associating a validator with wxGridCellTextEditor.

Add wxGridCellTextEditor::SetValidator() for finer control over text input in
wxGrid.

Closes #15176.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74001 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/grid.h

@@ -638,6 +638,13 @@ public:
         the maximum width.
     */
     virtual void SetParameters(const wxString& params);
+
+    /**
+        Set validator to validate user input.
+
+        @since 2.9.5
+    */
+    virtual void SetValidator(const wxValidator& validator);
 };
 
 /**