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likehu

Can't access DLL function

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Hello,

I have compiled a reference DLL in VS 2015 Community and this  DLL works fine with project for which it is used. There is an interface from which u can access functions in DLL.

Developers stated that this DLL is almost universal and can be used with any language with minor changes.

I am trying to access its function from Autoit script and got an error 3, after calling DLLCall - "function" not found in the DLL file.

Please have a quick look, I feel I miss something in C++ library with exporting functions and I do not know what to add as I am new to C++.

Thank you.

Source files and script also attached.

 

Here is my script.

Local $dll = DllOpen("C:\Users\Home\Desktop\dll\user.dll")
ConsoleWrite("$dll handle = " & $dll & @CRLF)   ;$dll handle = 1

Local $result = DllCall($dll, "double:cdecl", "ProcessQuery", "str", "dll$mynumber")
If @error > 0 Then ConsoleWrite("Error: " & @error & @CRLF)    ;Error = 3

If IsArray($result) Then
    ConsoleWrite("Array returned!" & @CRLF & "dll$mynumber: " & result[1])
Else
    ConsoleWrite("$result is not array. : " & $result  & @CRLF)  ;$result = 0
EndIf

DllClose($dll)

And here is dll source. As I understand, function "ProcessQuery" exported with help of DLL_IMPLEMENTS

user.h

//******************************************************************************
//
// This file is part of the OpenHoldem project
//   Download page:         http://code.google.com/p/openholdembot/
//   Forums:                http://www.maxinmontreal.com/forums/index.php
//   Licensed under GPL v3: http://www.gnu.org/licenses/gpl.html
//
//******************************************************************************
//
// Purpose: Very simple user-DLL as a starting-point
//
// DO NOT CHANGE ANYTHING IN THIS FILE!
//   
// This Header defines an interface
// Functions and data-types must exactly match.
//
//******************************************************************************

#ifndef _INC_USER_H
#define _INC_USER_H

// Import and export directives
// for use by this DLL and by OpenHoldem
#ifdef USER_DLL
#define DLL_IMPLEMENTS extern "C" __declspec(dllexport)
#define EXE_IMPLEMENTS extern "C" __declspec(dllimport)
#else
#define DLL_IMPLEMENTS extern "C" __declspec(dllimport)
#define EXE_IMPLEMENTS extern "C" __declspec(dllexport)
#endif

// Number of saved table-states
// This number must not be changed, as we do a "& 0xFF"
// at various places to normalize the index.
const int kNumberOfHoldemStatesForDLL = 256;

// SHoldemePlayer
// used for sequence of 256 consequive table-states
// !!!! Needs 2 more cards for Omaha, if not entirely removed
struct holdem_player {
    char            m_name[16]          ;       //player name if known
    double          m_balance           ;       //player balance 
    double          m_currentbet        ;       //player current bet
    unsigned char   m_cards[2]          ;       //player cards
    unsigned char   m_name_known    : 1 ;       //0=no 1=yes
    unsigned char   m_balance_known : 1 ;       //0=no 1=yes
    unsigned char   m_fillerbits    : 6 ;       //filler bits
    unsigned char   m_fillerbyte        ;       //filler bytes
};

struct holdem_state {
    char            m_title[64]         ;       //table title
    double          m_pot[10]           ;       //total in each pot
    unsigned char   m_cards[5]          ;       //common cards
    unsigned char   m_is_playing    : 1 ;       //0=sitting-out, 1=sitting-in
    unsigned char   m_is_posting    : 1 ;       //0=autopost-off, 1=autopost-on
    unsigned char   m_fillerbits    : 6 ;       //filler bits
    unsigned char   m_fillerbyte        ;       //filler byte
    unsigned char   m_dealer_chair      ;       //0-9
    holdem_player   m_player[10]        ;       //player records
};

// Functions implemented and exported by the DLL,
// imported by OpenHoldem
DLL_IMPLEMENTS double __stdcall ProcessQuery(const char* pquery);
DLL_IMPLEMENTS void __stdcall DLLOnLoad();
DLL_IMPLEMENTS void __stdcall DLLOnUnLoad();

// Functions implemented and exported by OpenHoldem,
// imported by the DLL
EXE_IMPLEMENTS double __stdcall GetSymbol(const char* name_of_single_symbol__not_expression);
EXE_IMPLEMENTS void*  __stdcall GetPrw1326();
EXE_IMPLEMENTS char*  __stdcall GetHandnumber();
EXE_IMPLEMENTS void   __stdcall ParseHandList(const char* name_of_list, const char* list_body);
EXE_IMPLEMENTS char*  __stdcall ScrapeTableMapRegion(char* p_region, int& p_returned_lengh);
EXE_IMPLEMENTS void   __stdcall SendChatMessage(const char *message);
EXE_IMPLEMENTS void   __stdcall WriteLog(char* format, ...);

// Variables exported by OpenHoldem
// avoiding the message-mess of WinHoldem,
// no longer sending any state-messages
// http://www.maxinmontreal.com/forums/viewtopic.php?f=174&t=18642
EXE_IMPLEMENTS extern holdem_state state[kNumberOfHoldemStatesForDLL];
EXE_IMPLEMENTS extern int state_index;

#endif // _INC_USER_H

 

user.cpp    Here is dll$mynumber parameter.

//******************************************************************************
//
// This file is part of the OpenHoldem project
//   Download page:         http://code.google.com/p/openholdembot/
//   Forums:                http://www.maxinmontreal.com/forums/index.php
//   Licensed under GPL v3: http://www.gnu.org/licenses/gpl.html
//
//******************************************************************************
//
// Purpose: Very simple user-DLL as a starting-point
//
// Required OpenHoldem version: 7.7.6
//
//******************************************************************************

// Needs to be defined here, before #include "user.h"
// to generate proper export- and inport-definitions
#define USER_DLL

// #define OPT_DEMO_OUTPUT if you are a beginner 
// who wants to see some message-boxes with output of game-states, etc.
// It is disabled upon request, 
//   * as it is not really needed
//   * as some DLL-users don't have MFC (atlstr.h) installed
// http://www.maxinmontreal.com/forums/viewtopic.php?f=156&t=16232
#undef OPT_DEMO_OUTPUT

#include "user.h"
#include <conio.h>
#include <windows.h>

#ifdef OPT_DEMO_OUTPUT
#include <atlstr.h>
#endif OPT_DEMO_OUTPUT

// Supporting macros
#define HIGH_NIBBLE(c)  (((c)>>4)&0x0F)
#define LOW_NIBBLE(c)     ((c)&0x0F)

// Card macro
#define RANK(c)         ( ISKNOWN(c) ? HIGH_NIBBLE(c) : 0 )
#define SUIT(c)         ( ISKNOWN(c) ? LOW_NIBBLE(c) : 0 )
#define ISCARDBACK(c)   ((c) == CARD_BACK)
#define ISUNKNOWN(c)    ((c) == CARD_UNDEFINED)
#define ISNOCARD(c)     ((c) == CARD_NOCARD)
#define ISKNOWN(c)      (!ISCARDBACK(c) && !ISUNKNOWN(c) && !ISNOCARD(c))

// ProcessQuery()
//   Handling the lookup of dll$symbols
DLL_IMPLEMENTS double __stdcall ProcessQuery(const char* pquery) {
    if (pquery==NULL)
        return 0;
   
    if (strncmp(pquery,"dll$mynumber",13)==0) {
        return 12345.67;
    }
    
    return 0;
}

// OnLoad and OnUnload()
//   called once and at the beginning of a session
//   when the DLL gets loaded / unloaded
//   Do initilization / finalization here.

DLL_IMPLEMENTS void __stdcall DLLOnLoad() {
#ifdef OPT_DEMO_OUTPUT
        MessageBox(NULL, "event-load", "MESSAGE", MB_OK);
#endif OPT_DEMO_OUTPUT
}

DLL_IMPLEMENTS void __stdcall DLLOnUnLoad() {
#ifdef OPT_DEMO_OUTPUT
        MessageBox(NULL, "event-unload", "MESSAGE", MB_OK);
#endif OPT_DEMO_OUTPUT
}

// DLL entry point
//   Technically required, but don't do anything here.
//   Initializations belong into the OnLoad() function,
//   where they get executed at run-time.
//   Doing things here at load-time is a bad idea,
//   as some functionalitz might not be properly initialized   
//   (including error/handling).
BOOL APIENTRY DllMain(HANDLE hModule, DWORD ul_reason_for_call, LPVOID lpReserved) {
  switch (ul_reason_for_call)   {
        case DLL_PROCESS_ATTACH:
#ifdef OPT_DEMO_OUTPUT
            AllocConsole();
#endif OPT_DEMO_OUTPUT
            break;
        case DLL_THREAD_ATTACH:
            break;
        case DLL_THREAD_DETACH:
            break;
        case DLL_PROCESS_DETACH:
#ifdef OPT_DEMO_OUTPUT
            FreeConsole();
#endif OPT_DEMO_OUTPUT
            break;
    }
  return TRUE;
}

 

Source.zip

DllAccess.au3

Edited by likehu

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likehu,

A with all your threads so far, this request is obviously for help with a poker gamebot. As such it is not permitted by the topic=169097]Forum rules[/topic] - thread locked.

And if you continue to post on this subject we may begin to question your membership of this community - the rules are quite clear, so please follow them.

M23

 


Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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