Writing Barcodes

Take the following steps to add code to an existing project that will let you write barcodes:

1. Start with the program you created in Reading Barcodes.

2. Define the following global IDs in Ezfunc.h in the BarcodeTutor directory:

   #define IDM_WRITE_BARCODES       201  

3. Edit EZFUNC.RC file in the BarcodeTutor directory and add the following lines:

   MAIN_MENU   MENU 
   BEGIN 
      ... 
      ... 
      MENUITEM "Write Barcode"   IDM_WRITE_BARCODES 
   END 

4. In the MainWndProc procedure, add the following code to the switch statement for WM_COMMAND:

   case IDM_WRITE_BARCODES: 
   { 
      BARCODE1D Bar1d; 
      memset(&Bar1d, 0, sizeof(BARCODE1D)); 
      Bar1d.uStructSize = sizeof(BARCODE1D); 
      Bar1d.bErrorCheck = TRUE; 
      Bar1d.bOutShowText = TRUE; 
      BARCODEDATA BarData; 
      memset(&BarData, 0, sizeof(BARCODEDATA)); 
      BarData.uStructSize = sizeof(BARCODEDATA); 
      BarData.nUnits = BARCODE_SCANLINES_PER_PIXELS; 
      SetRect(&BarData.rcBarLocation, 100, 100, 350, 200); 
      BarData.pszBarCodeData = "012345678901"; 
      BarData.nSizeofBarCodeData = (L_INT)strlen(BarData.pszBarCodeData); 
      BarData.ulType = BARCODE_1D_EAN_13; 
      BARCODECOLOR BarColor; 
      memset(&BarColor, 0, sizeof(BARCODECOLOR)); 
      BarColor.uStructSize = sizeof(BARCODECOLOR); 
      BarColor.dwColorBar = RGB(0, 0, 0); 
      BarColor.dwColorSpace = RGB(255, 255, 255); 
      L_INT nRet = L_BarCodeWrite(&LeadBitmap, &BarData, &BarColor, 0, &Bar1d, NULL, NULL, NULL, NULL, NULL, NULL, NULL); 
      if (nRet == SUCCESS) 
         InvalidateRect(hWnd, NULL, TRUE); 
      else 
         MessageBox(hWnd, TEXT("Failure during writing linear barcodes"), TEXT("Error!"), MB_OK); 
   } 
   break; 

5. Build and run the program to test it.