Take the following steps to create and run a program that uses the UNICODE version of LEADTOOLS in a non-UNICODE application.
| 1. | Start a new project as follows: | |
| Run Microsoft Visual Studio, select the File >New menu option, and do the following: | ||
| a. | Click the Projects menu item. | |
| b. | In the New Project dialog, select Visual C++\MFC AppWizard (exe) as the project type and select "MFC Application" for the template. | |
| c. | In the Project name text box, specify a name (for example "chartest"). | |
| d. | In the Location text box, specify the path of the project. | |
| e. | Click the OK button. | |
| 2. | In the Step 1 dialog box, do the following: Click Next on the next wizard. | |
| a. | Select Dialog based. | |
| b. | Click the Finish button. | |
| 3. | From the main menu, select Project->Properties. Under Configuration\General, set the "Character Set" to "Not Set". Click OK button. | |
| 4. | Edit the stdafx.h and add to the end of the file the following code (Note: you will have to change the path of ltwrappr.h to match the LEADTOOLS installation directory on your system): | |
// Define the version of LEADTOOLS you are using#define LTV18_CONFIG// Force using UNICODE version of LEADTOOLS (we will need to convert all strings)#define _LEAD_FORCE_UNICODE// Include the LEADTOOLS C++ Class Library header file#include "C:\LEADTOOLS 19\Include\ClassLib\LtWrappr.h"// Utility macro - Note: You might have to change the path to match your system.#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName
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// chartest2.pch will be the pre-compiled header// stdafx.obj will contain the pre-compiled type information#include "stdafx.h"#pragma comment(lib, "C:\\LEADTOOLS 19\\Lib\\CDLL\\Win32\\Ltwvc_u.lib")
| 6. | Add a command button to your form and name it as follows: | |
| ID | Caption | |
| IDC_FILEINFO | File Info | |
| 7. | Double Click on the new button and Add the following code: | |
L_INT nRet;FILEINFO FileInfo; /* LEAD File Information structure. */LFile File;char szMessage[1024]; /* Buffer to hold information for display. */char szInputFile[_MAX_PATH]=MAKE_IMAGE_PATH("IMAGE1.CMP");LSettings::LoadLibraries (LT_FIL);/* 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);File.SetFileName(wcsInputFile);nRet = File.GetInfo(&FileInfo, sizeof(FILEINFO), 0, NULL);if(nRet != SUCCESS)return;/* 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);LSettings::UnloadLibraries (LT_FIL);
8. |
On the Main menu, select Build > Build chartest.exe to build the project. |
9. |
On the Main menu, select Build > Execute chartest.exe to run the project. |
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