In file included from drawareabase.cpp:9:0:
drawareabase.h: メンバ関数 ‘const bool ARTICLE::DrawAreaBase::is_drawarea_realized()’ 内:
drawareabase.h:333:51: エラー: cannot convert ‘Glib::RefPtr<Gdk::Window>’ to ‘const bool’ in return
         const bool is_drawarea_realized(){ return m_window; }
ビルド通らないやつをぶっこんだとしか