feat(ui): add CSimpleCheckbox::Enable

src/ui/CSimpleCheckbox.cpp

@@ -39,6 +39,11 @@ bool CSimpleCheckbox::IsA(int32_t type) {
         || type == CScriptObject::s_objectType;
 }
 
+void CSimpleCheckbox::Enable(int32_t enabled) {
+    this->CSimpleButton::Enable(enabled);
+    this->SetChecked(this->m_checked, 1);
+}
+
 int32_t CSimpleCheckbox::GetChecked() {
     return this->m_checked;
 }

src/ui/CSimpleCheckbox.hpp

@@ -23,6 +23,7 @@ class CSimpleCheckbox : public CSimpleButton {
         virtual bool IsA(int32_t type);
         virtual int32_t GetScriptMetaTable();
         virtual void LoadXML(XMLNode* node, CStatus* status);
+        virtual void Enable(int32_t enabled);
 
         // Member functions
         CSimpleCheckbox(CSimpleFrame* parent)