Prints the specified Leadtools.RasterImage.
public virtual void Print(
RasterImage image,
int page,
PrintPageEventArgs e
)
image
The Leadtools.RasterImage to print.
page
The page number to print.
e
An System.Drawing.Printing.PrintPageEventArgs object that contains print data.
page is 1-based.
You usually call this method from your System.Drawing.Printing.PrintDocument.PrintPage event handler of a System.Drawing.Printing.PrintDocument object. You must pass the System.Drawing.Printing.PrintPageEventArgs obtained in the System.Drawing.Printing.PrintDocument.PrintPage event handler to this method as the e parameter.
using Leadtools.WinForms;
using Leadtools;
using Leadtools.Codecs;
// The image we are printing
private RasterImage myImage = null;
// The current page number being printed
private int currentPrintPageNumber;
public void RasterImagePrinterExample()
{
// Check if there are printers installed on this machine
if (PrinterSettings.InstalledPrinters == null || PrinterSettings.InstalledPrinters.Count < 1)
{
MessageBox.Show("There are no printers installed on this machine");
return;
}
// Load the image
using (RasterCodecs codecs = new RasterCodecs())
{
this.myImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Ocr1.tif"));
}
// Create the print document object
using (PrintDocument document = new PrintDocument())
{
// Setup the document pages
document.PrinterSettings.MinimumPage = 1;
document.PrinterSettings.MaximumPage = this.myImage.PageCount;
document.PrinterSettings.FromPage = 1;
document.PrinterSettings.ToPage = this.myImage.PageCount;
DialogResult result = DialogResult.OK;
// Select the printer
using (PrintDialog printDlg = new PrintDialog())
{
printDlg.Document = document;
printDlg.AllowSomePages = true;
result = printDlg.ShowDialog();
}
// Setup the page
if (result == DialogResult.OK)
{
using (PageSetupDialog pageSetupDlg = new PageSetupDialog())
{
pageSetupDlg.Document = document;
pageSetupDlg.ShowDialog();
}
}
if (result == DialogResult.OK)
{
// Add handlers for Begin/Print and End print events
document.BeginPrint += new PrintEventHandler(document_BeginPrint);
document.PrintPage += new PrintPageEventHandler(document_PrintPage);
document.EndPrint += new PrintEventHandler(document_EndPrint);
// Use the .NET print preview dialog
using (PrintPreviewDialog printPreviewDlg = new PrintPreviewDialog())
{
printPreviewDlg.Document = document;
printPreviewDlg.WindowState = FormWindowState.Maximized;
result = printPreviewDlg.ShowDialog();
}
}
}
// Clean up
this.myImage.Dispose();
}
private void document_BeginPrint(object sender, PrintEventArgs e)
{
// Reset the current page number
// Since we are using the print preview dialog, this event will be called twice (once
// to generate the print preview and once for actual printing). So, we must set this back
// to the first print page
PrintDocument document = sender as PrintDocument;
this.currentPrintPageNumber = document.PrinterSettings.FromPage;
}
private void document_EndPrint(object sender, PrintEventArgs e)
{
// Nothing to do here
}
private void document_PrintPage(object sender, PrintPageEventArgs e)
{
// Get the print document object
PrintDocument document = sender as PrintDocument;
// Create an new LEADTOOLS image printer class
RasterImagePrinter printer = new RasterImagePrinter();
// Set the document object so page calculations can be performed
printer.PrintDocument = document;
// We want to fit and center the image into the maximum print area
printer.SizeMode = RasterPaintSizeMode.FitAlways;
printer.HorizontalAlignMode = RasterPaintAlignMode.Center;
printer.VerticalAlignMode = RasterPaintAlignMode.Center;
// Account for FAX images that may have different horizontal and vertical resolution
printer.UseDpi = true;
// Print the whole image
printer.ImageRectangle = Rectangle.Empty;
// Use maximum page dimension ignoring the margins, this will be equivalant of printing
// using Windows Photo Gallery
printer.PageRectangle = RectangleF.Empty;
printer.UseMargins = false;
// Print the current page
printer.Print(this.myImage, this.currentPrintPageNumber, e);
// Go to the next page
this.currentPrintPageNumber++;
// Inform the printer whether we have more pages to print
if (this.currentPrintPageNumber <= document.PrinterSettings.ToPage)
e.HasMorePages = true;
else
e.HasMorePages = false;
// De-couple our PrintDocument from the RasterImagePrinter
printer.PrintDocument = null;
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}