Using the UNICODE version of LEADTOOLS in a non-UNICODE Application

Take the following steps to create and run a program that uses the UNICODE version of LEADTOOLS in a non-UNICODE application.

Start Visual Studio 2008.
From the main menu, select File->New->Project. In the New Project dialog, Select Visual C++\Win32 for the project type and select "Win32 Console Application" for the template. Enter a name (for example "chartest") and a location for your new project and then click OK. Click Finish on the next wizard dialog to create your new project.
From the main menu, select Project->Properties. Under Configuration\General, set the "Character Set" to "Not Set". Click OK.

Edit stdafx.h and replace the contents of the file with the following code (Note: you will have to change the path of l_bitmap.h to match the LEADTOOLS installation directory on your system):

// stdafx.h : include file for standard system include files,   
// or project specific include files that are used frequently, but   
// are changed infrequently   
#pragma once   
#define WIN32_LEAN_AND_MEAN   // Exclude rarely-used stuff from Windows headers   
#include <stdio.h>   
#include <stdlib.h>   
#include <tchar.h>   
#include "C:\LEADTOOLS23\Include\l_bitmap.h"   
// TODO: reference additional headers your program requires here

Edit stdafx.cpp and replace the contents of the file with the following code (Note: you will have to change the path to the .lib files to match your system):

// stdafx.cpp : source file that includes just the standard includes   
// chartest.pch will be the pre-compiled header   
// stdafx.obj will contain the pre-compiled type information   
#include "stdafx.h"   
#pragma comment(lib, "C:\\LEADTOOLS23\\Lib\\CDLL\\Win32\\Ltkrn_u.lib")   
#pragma comment(lib, "C:\\LEADTOOLS23\\Lib\\CDLL\\Win32\\Ltfil_u.lib")   
// TODO: reference any additional headers you need in STDAFX.H   
// and not in this file

Edit the project's main .cpp (for example chartest.cpp) and replace the contents of the file with the following code (Note: you will have to change the path of l_bitmap.h to match the LEADTOOLS installation directory on your system):

#include "stdafx.h" 
L_INT FileInfoExample(L_VOID) 
{ 
   L_INT nRet; 
   FILEINFO FileInfo;        /* LEAD File Information structure. */ 
   char szMessage[1024];  /* Buffer to hold information for display. */ 
   char szInputFile[_MAX_PATH]=MAKE_IMAGE_PATH("IMAGE3.CMP"); 
   /* Convert non-UNICODE to UNICODE */ 
   L_TCHAR wcsInputFile[_MAX_PATH]=L"\0"; 
   mbstowcs(wcsInputFile, szInputFile, _MAX_PATH); 
   /* Get the file information */ 
   FileInfo.uStructSize = sizeof(FileInfo); 
   nRet = L_FileInfo(wcsInputFile, &FileInfo, sizeof(FILEINFO), 0, NULL); 
   if(nRet != SUCCESS) 
      return nRet; 
   /* Convert UNICODE to non-UNICODE */ 
   char szName[16]; 
   wcstombs(szName, FileInfo.Name, 16); 
   char szCompression[20]; 
   wcstombs(szCompression, FileInfo.Compression, 20); 
   /* Format the message string with data from the FILEINFO structure */ 
   wsprintf(szMessage, "Filename:   %s\n\n" 
   "Format:   %d\n\n" 
   "Width:   %d\n\n" 
   "Height:   %d\n\n" 
   "BitsPerPixel:   %d\n\n" 
   "Size On Disk:   %ld\n\n" 
   "Size In Memory:   %ld\n\n" 
   "Compression:   %s", 
   szName, 
   FileInfo.Format, 
   FileInfo.Width, 
   FileInfo.Height, 
   FileInfo.BitsPerPixel, 
   FileInfo.SizeDisk, 
   FileInfo.SizeMem, 
   szCompression ); 
   /* Display the message string */ 
   MessageBox( NULL, szMessage, "File Information", MB_OK ); 
   return SUCCESS; 
} 
int main(int argc, char* argv[]) 
{ 
   FileInfoExample(); 
   return 0; 
}