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Posted: **Thu May 14, 2009 11:53 pm**

I'm messing around with converting some C to PB for the learning experience. But having trouble with something.

p = (PKBDLLHOOKSTRUCT) (lParam)

p is a structure of type PKBDLLHOOKSTRUCT already. From what I understand it is typecasting lParam to type PKBDLLHOOKSTRUCT and assigning the values to p. How would this be done in PB?

Posted: **Thu May 14, 2009 11:58 pm**

I think this:

Code: Select all

*p.PKBDLLHOOKSTRUCT = lParam

Posted: **Fri May 15, 2009 9:50 pm**

I don't think that's the same thing

Posted: **Fri May 15, 2009 9:51 pm**

Looks to be the same thing to me; at least in the sense that it is the PB way of doing it.

Posted: **Fri May 15, 2009 11:00 pm**

I guess I don't really understand what that line is doing lol

Posted: **Fri May 15, 2009 11:05 pm**

ignign0kt wrote:I guess I don't really understand what that line is doing lol

It seems like it is typecasting the pointer "lparam" as a "PKBDLLHOOKSTRUCT" structure and assigning it to the variable "p".

The PB version assigns the pointer value "lparam" to the structured pointer "*p.PKBDLLHOOKSTRUCT" .

Posted: **Fri May 15, 2009 11:06 pm**

Sets the Adress in lParam to a structured pointer
here pseudocode, i have no information over the structure:

Code: Select all

*p.PKBDLLHOOKSTRUCT = lParam
*p\member1 = 100
a = *p\member2

Posted: **Fri May 15, 2009 11:09 pm**

Ok I think I have it figure out now.. thanks

Posted: **Sat May 16, 2009 10:42 am**

If p is really a structure (and not a pointer to a structure), then you can't do it like that in PB. You have to assign the individual structure members.
If p is a pointer to a structure, you just use declare *p.PKBDLLHOOKSTRUCT and then use *p = lParam.

PureBasic Forums - English

Attempting to convert from C

Attempting to convert from C