I posted a new lazarus.zip to the web site. It includes two files one called test.pp and tstform.pp these two
files make up a program called test. test is the program file and tstform is a single form with a tbutton on it. It is a perfect way to test controls that you are working on.

FCanvas on forms has been commented out...

The button is created in the forms constructor. just replace it with your particular component.

Cliff