Update panel.cpp

Author: gammasoft71

examples/xtd.forms.examples/containers/panel/src/panel.cpp

@@ -7,13 +7,13 @@ class form1 : public form {
     location({200, 200});
     client_size({640, 480});
 
-    panel1.parent(*this);
+    panel1.parent(self_);
     panel1.border_style(forms::border_style::fixed_single);
     panel1.location({10, 10});
     panel1.size({305, 460});
     panel1.anchor(anchor_styles::top | anchor_styles::left | anchor_styles::bottom);
 
-    panel2.parent(*this);
+    panel2.parent(self_);
     panel2.border_style(forms::border_style::fixed_3d);
     panel2.location({325, 10});
     panel2.size({305, 460});