+ c->width.Absolute(BUTTON_WIDTH);
+ c->top.SameAs(this, wxTop, 2*LAYOUT_Y_MARGIN);
+ c->height.AsIs();
+ btn_back->SetConstraints(c);
+
+ c = new wxLayoutConstraints;
+ c->left.SameAs(btn_back, wxRight, 2*LAYOUT_X_MARGIN);
+ c->width.Absolute(BUTTON_WIDTH);
+ c->top.SameAs(this, wxTop, 2*LAYOUT_Y_MARGIN);
+ c->height.AsIs();
+ btn_fwd->SetConstraints(c);
+
+ c = new wxLayoutConstraints;
+ c->left.SameAs(btn_fwd, wxRight, 2*LAYOUT_X_MARGIN);
+ c->width.Absolute(BUTTON_WIDTH);
+ c->top.SameAs(this, wxTop, 2*LAYOUT_Y_MARGIN);
+ c->height.AsIs();
+ btn_contents->SetConstraints(c);
+
+ c = new wxLayoutConstraints;
+ c->left.SameAs(btn_contents, wxRight, 2*LAYOUT_X_MARGIN);
+ c->width.Absolute(3*BUTTON_WIDTH);
+ c->top.SameAs(this, wxTop, 2*LAYOUT_Y_MARGIN);
+ c->height.AsIs();
+ m_combo->SetConstraints(c);
+
+ c = new wxLayoutConstraints;
+ c->left.SameAs(m_combo, wxRight, 2*LAYOUT_X_MARGIN);
+ c->width.Absolute(BUTTON_WIDTH);