'宣言 Sub ClipArc( _ ByVal x As Single, _ ByVal y As Single, _ ByVal width As Single, _ ByVal height As Single, _ ByVal startAngle As Single, _ ByVal endAngle As Single _ )
void ClipArc( float x, float y, float width, float height, float startAngle, float endAngle )
IGraphics インターフェース IGraphics メンバ