Add wxIntegerValidator and wxFloatingPointValidator classes.

Add validators for integer and floating point numbers.

Add an example of their use to the validate sample as well as a new unit test
and documentation for them.

Use the new classes instead of wxTextValidator in wxGrid code.

Closes #12166.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66714 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/validate/validate.h

@@ -52,6 +52,9 @@ public:
     bool TransferDataToWindow();
     wxTextCtrl *m_text;
     wxComboBox *m_combobox;
+
+    wxTextCtrl *m_numericTextInt;
+    wxTextCtrl *m_numericTextDouble;
 };
 
 class MyData
@@ -72,6 +75,10 @@ public:
     // the string entered in the combobox's text-edit field.
     wxString m_combobox_choice;
 
+    // variables handled by wxNumericTextValidator
+    int m_intValue;
+    double m_doubleValue;
+
     bool m_checkbox_state;
     int m_radiobox_choice;
 };