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[C++ HELP] CreateThread() Help Needed:

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Fuzz
Grandmaster Cheater

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Joined: 12 Nov 2006
Posts: 531

Posted: Mon Aug 11, 2008 8:04 pm Post subject: [C++ HELP] CreateThread() Help Needed:

So, here's the code:

Code:

// WMPlayer Window.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include <windowsx.h>
#include "resource.h"
#include <detours.h>
#include <iostream>
#include <sstream>
#include <windows.h>
#include <WINDOWS.H>

#include <stdio.h>

#define sAppName "Hide Ghost"
#define sClassName "HideGhost"
using namespace std;

//Control Declares//
#define IDC_EDIT_CAPTION 1
#define IDC_BUTTON_SHOW 2
#define IDC_BUTTON_HIDE 3
#define IDC_BUTTON_NEW 6
#define IDC_BUTTON_CHANGE 4
#define IDM_MENU_ABOUT 5
#define IDC_STATIC_NEWONE 7
#define GIL 0x0100579C
#define ENABLE_SAVE 0x01CFEA89
#define BUF_SIZE 255
#define MAX_THREADS 3
#define BUF_SIZE 255

DWORD WINAPI MyThreadFunction( LPVOID lpParam );
void ErrorHandler(LPTSTR lpszFunction);

// Sample custom data structure for threads to use.
// This is passed by a void pointer so it can be any data type
// that can be passed using a single void pointer (LPVOID).
typedef struct MyData {
int val1;
int val2;
} MYDATA, *PMYDATA;

static HWND EDIT_CAPTION;
static HWND STATIC_NEWONE;
static HWND BUTTON_SHOW;
static HWND BUTTON_HIDE;
static HWND BUTTON_CHANGE;
static HWND BUTTON_NEW;
static HWND ff8Wnd;
static HANDLE ff8Hnd;

// End Control Declares
PMYDATA pDataArray[MAX_THREADS];
DWORD dwThreadIdArray[MAX_THREADS];
HANDLE hThreadArray[MAX_THREADS];
static HWND lwmhWnd;

static HINSTANCE hInstance;
static HWND MainHwnd;

static LRESULT CALLBACK mainWndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam);
static int DetectWindow();
static void ChangeCaption();
void DOABOUT(HINSTANCE hInstance);
static DWORD pid;

int WINAPI WinMain (HINSTANCE hinst, HINSTANCE hprevinst, LPSTR lpCmdLine, int cmdShow)
{

for( int i=0; i<MAX_THREADS; i++ )
{
// Allocate memory for thread data.

pDataArray[i] = (PMYDATA) HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
sizeof(MYDATA));

if( pDataArray[i] == NULL )
{
// If the array allocation fails, the system is out of memory
// so there is no point in trying to print an error message.
// Just terminate execution.
ExitProcess(2);
}

}
// Generate unique data for each thread to work with.

pDataArray[i]->val1 = i;
pDataArray[i]->val2 = i+100;

// Create the thread to begin execution on its own.

hThreadArray[i] = CreateThread(
NULL, // default security attributes
0, // use default stack size
MyThreadFunction, // thread function name
pDataArray[i], // argument to thread function
0, // use default creation flags
&dwThreadIdArray[i]); // returns the thread identifier

// Check the return value for success.
// If CreateThread fails, terminate execution.
// This will automatically clean up threads and memory.

if (hprevinst == NULL)
{
   WNDCLASS wclass;
   memset (&wclass, 0, sizeof(wclass));
   wclass.style = CS_HREDRAW | CS_VREDRAW;
   wclass.lpfnWndProc = mainWndProc;
   wclass.hInstance = hinst;
   wclass.hIcon = LoadIcon(hinst,MAKEINTRESOURCE(IDI_ICON1));
   wclass.hCursor = LoadCursor (NULL, IDC_ARROW);
   wclass.hbrBackground = (HBRUSH)GetStockObject(LTGRAY_BRUSH);
   wclass.lpszClassName = sClassName;
   if (!RegisterClass (&wclass)) return 0;
}

HWND hwnd = CreateWindow(sClassName,sAppName,WS_OVERLAPPED | WS_MINIMIZEBOX |WS_VISIBLE | WS_CAPTION | WS_SYSMENU | WS_DLGFRAME | WS_BORDER,
   CW_USEDEFAULT,CW_USEDEFAULT,130,200,0,0,hinst,0);
hInstance = hinst;
ShowWindow(hwnd, cmdShow);
UpdateWindow(hwnd);
MainHwnd = hwnd;

MSG msg;
while (GetMessage(&msg, NULL, 0, 0))
{

   TranslateMessage(&msg);
   DispatchMessage(&msg);
}

return msg.wParam;
}

static LRESULT CALLBACK mainWndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
switch(msg)
{
case WM_DESTROY:
   {
      PostQuitMessage(0);
   }
case WM_CLOSE:
   {
      DestroyWindow(hwnd);
   }
case WM_CREATE:
   {
      HMENU lSysMenu = GetSystemMenu(hwnd,false);
      AppendMenu(lSysMenu,MF_SEPARATOR,0,0);
      AppendMenu(lSysMenu,MF_STRING,IDM_MENU_ABOUT,"About...");
      BUTTON_NEW = CreateWindow("Button","&Hide Gpoopt",WS_CHILD | WS_VISIBLE,1,25,125,25,hwnd,(HMENU)IDC_BUTTON_NEW,hInstance,0);
      BUTTON_SHOW = CreateWindow("Button","&Show Ghost",WS_CHILD | WS_VISIBLE,1,50,125,25,hwnd,(HMENU)IDC_BUTTON_SHOW,hInstance,0);
      BUTTON_HIDE = CreateWindow("Button","&Hide Ghost",WS_CHILD | WS_VISIBLE,1,1,125,25,hwnd,(HMENU)IDC_BUTTON_HIDE,hInstance,0);
      STATIC_NEWONE = CreateWindow("Static","This will be a value", WS_CHILD | WS_VISIBLE, 1,75,200,20,hwnd,(HMENU)IDC_STATIC_NEWONE,hInstance,0);
   }
case WM_SYSCOMMAND:
   {
      switch(LOWORD(wparam))
      {
      case IDM_MENU_ABOUT:
         {
            DOABOUT(hInstance);
            break;

         }
      }

      break;
   }
case WM_COMMAND:
   {
      switch(HIWORD(wparam))
      {
      case BN_CLICKED:
         {
            switch(LOWORD(wparam))
            {
            case IDC_BUTTON_SHOW:
               {
                  int iresult = 0;
                  iresult = DetectWindow();
                  if (iresult == 1)
                  {
                     ShowWindow(lwmhWnd, 1);
                  }
                  break;
               }

               case IDC_BUTTON_NEW:
               {


               WaitForMultipleObjects(MAX_THREADS, hThreadArray, TRUE, INFINITE);

                  break;
               }

            case IDC_BUTTON_HIDE:
               {

                  int iresult = 0;
                  iresult = DetectWindow();
                  if (iresult == 1)
                  {
                     ShowWindow(lwmhWnd, 0);
                  }




                  break;
               }
            case IDC_BUTTON_CHANGE:
               {
                  ChangeCaption();
                  break;
               }
            }
         }
      }

   }

}
return DefWindowProc(hwnd,msg,wparam,lparam);
}

static int DetectWindow()
{
lwmhWnd = FindWindow("GhostSoul",NULL);

if (lwmhWnd == 0) // Window Isn't Open
{

   return 0;
}
else
{
   return 1; // Window is open
}

}

static void ChangeCaption()
{
char sChange[256];
GetDlgItemText(MainHwnd,IDC_EDIT_CAPTION,sChange,256);
SetWindowText(lwmhWnd,sChange);
}

DWORD WINAPI MyThreadFunction(HWND hwnd, LPVOID lpParam )
{

while(1){

                        DWORD bytes;
                     int tmpValue;
                        HWND ff8Wnd;
                        HANDLE ff8Hnd;
                        DWORD pid;
                           //
                  ff8Wnd = FindWindow("Minesweeper", "Minesweeper"); //or simply FindWindow(NULL, "Final Fantasy VIII"); in msvc++ 6
                  if(!ff8Wnd)
                     {
      MessageBox(0,"Unable to locate GO window","Uh-Oh!",MB_OK);
                     }
                  else
                     {
      GetWindowThreadProcessId(ff8Wnd, &pid);
      ff8Hnd = OpenProcess(PROCESS_ALL_ACCESS, false, pid); //now we got process handle, ready to read/write
      if(!ff8Hnd) {
   MessageBox(0,"Unable to open process","Uh-Oh",0);
               }

         ReadProcessMemory(ff8Hnd, (void*)GIL, (void*)&tmpValue, 8, &bytes);
            // ERROR BELOW
                  std::ostringstream s;
                  s << tmpValue << flush; ;
            SetDlgItemText(hwnd, IDC_STATIC_NEWONE, s.str().c_str());

                  }
}

}

Here's the error

Code:

LINK : warning LNK4076: invalid incremental status file "Debug/WMPlayer Window.ilk"; linking nonincrementally
WMPlayer Window.obj : error LNK2001: unresolved external symbol "unsigned long __stdcall MyThreadFunction(void *)" (?MyThreadFunction@@YGKPAX@Z)
Debug/WMPlayer Window.exe : fatal error LNK1120: 1 unresolved externals

Does anyone know the problem/how to fix it?

kitterz
Grandmaster Cheater Supreme

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Joined: 24 Dec 2007
Posts: 1268

Posted: Mon Aug 11, 2008 9:21 pm Post subject:

Make sue you have a

Code:

ExitThread(0);

Zand
Master Cheater

Reputation: 0

Joined: 21 Jul 2006
Posts: 424

Posted: Mon Aug 11, 2008 9:28 pm Post subject:

kitterz wrote:

Make sue you have a

Code:

ExitThread(0);

That woudn't cause the error.

Noz3001
I'm a spammer

Reputation: 26

Joined: 29 May 2006
Posts: 6220
Location: /dev/null

Posted: Tue Aug 12, 2008 2:32 am Post subject:

You've included windows.h 3 times and the declaration at the top is different...

Zand
Master Cheater

Reputation: 0

Joined: 21 Jul 2006
Posts: 424

Posted: Tue Aug 12, 2008 2:40 am Post subject:

noz3001 wrote:

You've included windows.h 3 times and the declaration at the top is different...

Now THAT would cause a problem.

atom0s
Moderator

Reputation: 205

Joined: 25 Jan 2006
Posts: 8587
Location: 127.0.0.1

Posted: Tue Aug 12, 2008 5:13 am Post subject:

Your prototype for the thread function does not match the thread function itself.

The prototype:

Code:

DWORD WINAPI MyThreadFunction( LPVOID lpParam );

The function:

Code:

DWORD WINAPI MyThreadFunction(HWND hwnd, LPVOID lpParam )

The LPVOID lpParam of a thread function is used to pass data to the thread, so you do not need to add another param for the window handle, instead pass it through the lpParam. Look at the params of CreateThread for how to do that.
_________________

- Retired.

Fuzz
Grandmaster Cheater

Reputation: 0

Joined: 12 Nov 2006
Posts: 531

Posted: Tue Aug 12, 2008 9:08 am Post subject:

After reading about CreateThread() on MSDN, I still cannot quite figure this out, can you give a little more information, or perhaps an example?

Zand
Master Cheater

Reputation: 0

Joined: 21 Jul 2006
Posts: 424

Posted: Tue Aug 12, 2008 9:51 am Post subject:

Copy pasting code from MSDN makes very confusing code.

Change

Code:

DWORD WINAPI MyThreadFunction(HWND hwnd, LPVOID lpParam )

Code:

DWORD WINAPI MyThreadFunction(LPVOID lpParam )

and

Code:

SetDlgItemText(hwnd, IDC_STATIC_NEWONE, s.str().c_str());

Code:

SetDlgItemText(ff8Wnd, IDC_STATIC_NEWONE, s.str().c_str());

Fuzz
Grandmaster Cheater

Reputation: 0

Joined: 12 Nov 2006
Posts: 531

Posted: Tue Aug 12, 2008 3:19 pm Post subject:

Thanks, but i already replaced the first one, and the second one is the wrong hwnd. I need the hwnd to my own form, not a another hwnd.

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