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.

1. Start Visual Studio 2008.

2. 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.

3. From the main menu, select Project->Properties. Under Configuration\General, set the "Character Set" to "Not Set". Click OK.

4. 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:\LEADTOOLS21\Include\l_bitmap.h"   
   // TODO: reference additional headers your program requires here 

5. 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:\\LEADTOOLS21\\Lib\\CDLLVC10\\Win32\\Ltkrn_u.lib")   
   #pragma comment(lib, "C:\\LEADTOOLS21\\Lib\\CDLLVC10\\Win32\\Ltfil_u.lib")   
   // TODO: reference any additional headers you need in STDAFX.H   
   // and not in this file 

6. 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; 
   } 

7. Press CTRL+F5 to build and run your application to test it.