初始化控件信息
[helpstring("method InitMxDrawOcx")] HRESULT InitMxDrawOcx([in] BSTR pszReserve1, [in] BSTR pszReserve2, [in] BSTR pszReserve3, [in] BSTR pszReserve4, [in] BSTR pszReserve5);
IMxDrawApplication 方法