I understood. The current application is VCL. I understood that. But what I want to know: is how do I use VCL in Delphi 7, or better yet, know that in the form I'm designing, if VCL is running? Because the VCL name does not appear in the components window. CLX only. Remembering, I'm a beginner and I don't know how to run VCL in "Delphi 7". And I'm using "Delphi 7".