Building a dll [Solved]

[JohnOne]

I can add a ptototype before DllMain Richard ?

[ProgAndy]

Why would you have to do this?

Just create a function that the user of your DLL has to call directly after DLLOpen.

[jaberwacky]

Becuase then you're relying on people like me to actually remember to do something!

[jaberwacky]

I can add a ptototype before DllMain Richard ?

Why not? You can add prototypes before int main().

[JohnOne]

Yes, and the function works, but im having a problem telling when its executing because I'm not getting any console output until the dll is closed.

I'm in way over my head here now, I dont want to be wasting anyones time.

Edited October 3, 2010 by JohnOne

[ProgAndy]

Well, if you want it for AutoIt, create a function that loads the DLL and executes the function at once. Such wrappers for DLLOpen are included in most libraries using dlls like GDI+, MySQL, ...

This means, the users do not have to call DLLOpen, only xour custom func. Additional parameters for DLLOpen wouldn't be easier I bet.

Edited October 3, 2010 by ProgAndy

[JohnOne]

Thanks, I'll take a look at that.

And thanks to everyone for the schooling.

[Richard Robertson]

And yes, you can put function prototypes wherever you want.

[trancexx]

Yes, and the function works, but im having a problem telling when its executing because I'm not getting any console output until the dll is closed.

I'm in way over my head here now, I dont want to be wasting anyones time.

You should flush. Just like when peeing.

[jaberwacky]

You should flush. Just like when peeing.

Riddle me this riddle me that, Riddler.

That should keep 'em busy.

[JohnOne]

You should flush. Just like when peeing.

I've got a feeling that you gave me a hint there, its just a little to cryptic for a numpty like me.

I'm feeling like bit of a dullard regarding dlls at the moment, a 'dllard' if you will.

But I'm still looking into my problems.

EDIT:

In the end I wound up adding a flag in the dll code, so the function I wanted to run upon DllOpen runs before the first function call, then the flag is set so it dosent run again.

For reference, the function called here

case DLL_PROCESS_ATTACH:
   function();
   break;

Only seems to execute wnen the dll is closed/closing.

Edited October 4, 2010 by JohnOne

[trancexx]

That function is executed when it should be executed, you can be sure of that.

Question is what is function()? I could speculate the content of that function and probably wouldn't be too wrong; and not because I'm smart, but because you are too obvious .

Show me yours and I'll show you... what I meant up there. Don't be shy.

[JohnOne]

I'l take you at your word, but I still dont get it, all the indication tell me the code isnt being executed until DllMain returns.

But as always I'm up for a bit of education.

expandcollapse popup

int mainrtn(void);

BOOL APIENTRY DllMain( HMODULE hModule,
                       DWORD  ul_reason_for_call,
                       LPVOID lpReserved
                     )
{
    switch (ul_reason_for_call)
    {
    case DLL_PROCESS_ATTACH:
        mainrtn();
    case DLL_THREAD_ATTACH:
    case DLL_THREAD_DETACH:
    case DLL_PROCESS_DETACH:
        break;
    }
    return TRUE;
}

//Function declaration
extern "C" LPSTR __stdcall retstr(double s); 

//Functions
LPSTR __stdcall retstr(double s)
{
    if (s == 100000)
        {
            std::cout<<"Sweet";
            return "Sweet";
        }
    std::cout<<"Sour";
    return "Sour";
}

int mainrtn()
{
    std::cout<<"Called"<<"\n";
    return 0;
}

$dllopen = DllOpen("TestDll.dll")

$call = DllCall($dllopen, "str", "retstr", "double", 100000)

If @error Then
    ConsoleWrite(@error & @CRLF)
    Exit
Else
    ConsoleWrite($call[0] & @CRLF)
EndIf

$call = DllCall($dllopen, "str", "retstr", "double", 100000)
ConsoleWrite($call[0] & @CRLF)

$call = DllCall($dllopen, "str", "retstr", "double", 100000)
ConsoleWrite($call[0] & @CRLF)

DllClose($dllopen)

Sweet

Sweet

Sweet

Sweet

Sweet

Sweet

Called

[Valik]

std::endl is your friend.

[JohnOne]

http://www.cplusplus.com/reference/iostream/manipulators/endl/

Insert newline and flush

Cheers Valik.

trancexx is just a tease

[Valik]

She's not a tease. She told you exactly what to do. You were just distracted by sentence 2 and ignored sentence 1.