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.
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