Function Parameter Line?

Is it possible to pass parameters on the call line of a function? Or, do you need to fill register variables before the function call then read those in the function? OR...is there a way other than functions that I can use that accepts call line parameters (like macros or something???) Thanks!

Well...If you mean like this:

Function Hello(fg as number)

...

FunctionEnd

No.
But you have the option to use the Push and Pop
Before functions.... mostly like this:

Push $0

Call Hello

Pop $0 ; will give you something.

Go to the Nsis Web archive... there are more examples like this...

Thanks for the advice. And...since you brought it up...what exactly do the Push and Pop do? I've looked at the documentation, but I'm having some trouble trying to figure out what exactly it's doing. Maybe you could provide me with an example to explain?!?!?! Thanks much!

ctlajoie has posted a good description of pop and push and how they work. It can be found here. Hope this help you out.

Vytautas

Exch is useful as well.
Push will push a string onto the stack, and Pop willtake it off again, whereas Exch will exchange the string on the stack with the Exch variable.

Example:

Push hello

Call MyFunc

Pop $0 ;$0 = h



Function MyFunc

Exch $R0 ;$R0 = hello

Push $R1 ;saves $R1 value

Push $R2 ;saves $R2 value

StrCpy $R1 0

 IntOp $R1 $R1 - 1

loop:

 StrCpy $R2 $R0 1 $R1

  StrCmp $R2 "" error

  StrCmp $R2 "h" done loop 

error:

StrCpy $R2 error

done:

StrCpy $R0 $R2

Pop $R2 ;returns original $R2 value

Pop $R1 ;returns original $R1 value

Exch $R0 ;outputs $R0 value ($R0 = h)

FunctionEnd

-Stu