Trying to create a DLL

[Insolence]

[Kind of OT]

Do any of you C++ worn old folk have a link to on specifically on the creation of DLL's and anything else that would be important to that.

[/OT]

Here's the source:

#include <windows.h>
__declspec(dllexport) int Hello();

int Hello(){
    MessageBox( NULL, "Hello world!", NULL, MB_OK ); 
    return 1;            
}

Here's the AutoIT file:

$test = DllCall( @ScriptDir & "\Project1.dll", "int", "Hello" )

MsgBox("","", $Test)

It should throw the "Hello world!" message box, and then throw the successfully returned value "1". Obviously, it's not.

As with my last DLL post I feel ashamed, please don't bash me... or if you have to, be gentle

[Insolence]

Thanks.

I didn't really understand most of that, I got rid of as much of the DLL as I could, it's just one file... that's all the code.

I thought I should post it there, but I think people need to see it here also.

I'm playing SC right now, but I'll do the $Test[0] thing, thanks.

[Insolence]

I get

C:\Documents and Settings\Eric\Desktop\programming\cpp\memory reader\test.au3 (3) : ==> Subscript used with non-Array variable.:

now, so I assume it's just not returning a single thing.

eh

[Valik]

The name for that is mangled via the C++ compiler. It needs to be extern "C" in order to have the correct name.

This should work.

#include <windows.h>

extern "C" __declspec(dllexport) int Hello(){
    MessageBox( NULL, "Hello world!", NULL, MB_OK );
    return 1;           
}

Or, as Larry mentioned, you need a module definition file and then you can do without the 'extern "C" __declspec(dllexport)' stuff.

[Insolence]

I'm at school now but I'll test that when I get home, thanks

EDIT-

Excellent! It works, time to get to work.

Edited January 3, 2005 by Insolence