IfcDoc.CtlProperties.checkBoxEntityAbstract_CheckedChanged C# (CSharp) Method

        private void checkBoxEntityAbstract_CheckedChanged(object sender, EventArgs e)
        {
            DocEntity docAttr = (DocEntity)this.m_target;
            if (this.checkBoxEntityAbstract.Checked)
            {
                docAttr.EntityFlags &= ~0x20;
            }
            else
            {
                docAttr.EntityFlags |= 0x20;
            }
        }