9 messages in net.java.dev.jna.users[jna-users] Need help for beginner
FromSent OnAttachments
Hao JiangFeb 10, 2009 3:16 pm 
Daniel KaufmannFeb 10, 2009 4:58 pm 
Timothy WallFeb 10, 2009 5:00 pm 
Hao JiangFeb 11, 2009 9:08 am 
Hao JiangFeb 11, 2009 12:53 pm 
Timothy WallFeb 11, 2009 2:09 pm 
Timothy WallFeb 11, 2009 2:11 pm 
Hao JiangFeb 11, 2009 2:35 pm 
Hao JiangFeb 12, 2009 9:41 am 
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Subject:[jna-users] Need help for beginnerActions...
From:Hao Jiang (hji@intermap.com)
Date:Feb 10, 2009 3:16:35 pm
List:net.java.dev.jna.users

Hi,

I just found this tool and hope it can solve my problem, I'm in a rush to finish some work so will really appreciate if someone can help me out

Basically I need to access 2 functions in a dll

int Load

( const char* aFilename,

Handle* aLayer,

int aLoadFlags);

typedef void* Handle;

here I translate it into java function

int load(String fName, PointerByReference pr, int flag);

It seems working, the return int is an error code which tells me no error.

Then I need to call this function

const Info* Info

(

Handle aLayer

);

Here Info is a structure and I've created class for it extends Structure, I translate this function in java like this

Pointer Info(Pointer p);

Call it after the first function

PointerByReference pr = new PointerByReference(); Int error = load("a.txt", pr, 0); Pointer p = Info(pr.pr.getPointer());

No error so far, I just have no idea how to continue to get structure (Info) out of Pointer (p)

Thanks for any help

Hao

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