... fine, I want to put caption on this frames How to create class and use Caption properties Here are methods on CoolControls.jcFrame, I got from oleview : [ uuid(4C252B42-CA3D-477E-8A0E-CD2E4AB70B12), version(1.0), hidden, dual, nonextensible ] dispinterface _jcFrames { properties: methods: [id(0x68030015), ...