Questions about passing parameters

[Stefke28]

Dear Support

1. How are passed the parameters standard in PureBASIC?

2. How do I give byref through in pure basic ?

3. How can I get the memory address to an pointer in PureBASIC ?

Thanks for your answer before

Stephane

[thefool]

3. How can I get the memory address to an pointer in PureBASIC ?

You put @ in the front of it.

from the manual:

To find the address of a variable in your code, you use the at symbol (@).

Why dont you go read the manual. Most of your questions is in there.

[Stefke28]

And what about the questions 1 and 2 ?

Thanks
Stephane

[GedB]

In purebasic paramaters are always passed by value, on the stack in the standard c manner.

Pointer are dealt with explicitly, and the langauge does not attempt to obscure them from you through syntax.

When you pass a pointer to a structure, you are passing a pointer to a structure, the address at which that structure is held, which is a long. There is none of this obfuscating ByRef nonsense.

[akee]

i was asking the same question about ByRef and searched the forums... anyway some experimenting yielded this result.

Code: Select all

Procedure morph(*varbyref)
  PokeS(*varbyref, "outside has been changed")
EndProcedure

outside.s = "ok"

Debug outside
morph(@outside)
Debug outside

[blueznl]

http://www.xs4all.nl/~bluez/datatalk/pure4.htm#byref

[GedB]

akee,

Be careful poking those strings

Code: Select all

Procedure morph(*varbyref)
  PokeS(*varbyref, "outside has been changed")
EndProcedure

outside.s = "ok"
after.s = "not ok"

Debug outside
Debug after
morph(@outside)
Debug outside 
Debug after