As you probably know, VCL is incompatible with FireMonkey. What does it mean? As Embarcadero explains in the DocWiki:
FireMonkey (FMX) and the Visual Component Library (VCL) are not compatible and should not be used together in the same module. That is, a module should be exclusively one or the other, either FireMonkey or VCL. The incompatibility is caused by framework differences between FireMonkey (FMX) and VCL.
However, there is still something that can be done to use FireMonkey functionalities in a VCL application.
It's very probable that a VCL application could gain benefits by using some components or functionalities present only in the FireMonkey framework. So what could be the solution? ...