While I haven't worked with this library, I don't think you can use contructs like THIS and THISFORM. These are not viable outside of the context of the control/form and the FLL runs outside of that context.

You may be able to use something like _Screen.ActiveForm, I don't know. However, as the ActiveForm changed, the timer would would end up firing the same method on differnt forms.

>Hi:
>
>I Downloaded cppTimer.FLL from the Files section.
>
>The sample program runs great!!!
>
>This is how you start the timer and execute a command:
>SetupTimer(nTimerNo,nTimerInterval,cCommand)
>i.e. SetUpTimer(1,200,"QUIT")
>
>From within my form, SetUpTimer(1,200,"QUIT") executes and shuts down
>my program.
>
>However, a line such as ...
>
>WITH THISFORM
>.....SetUpTimer(1,200,".DoThisMethod()")
>ENDWITH
>
>does nothing.
>
>What's up with that?
>
>TIA