Chapter 17 Quick Reference

Chapter 17 Quick Reference

To	Do this
Incorporate the PrintDocument class in your projects and prepare for printing	Add the following Imports statement to the top of your form: ImportsSystem.Drawing.Printing
Create a printing event handler	Use the AddHandler statement and the AddressOf operator. For example: AddHandler PrintDocument1.PrintPage, _ AddressOf Me.PrintGraphic
Create a PrintDocument object in your project	Double-click the PrintDocument control on the Printing tab of the Toolbox. or Include the following variable declaration in your program code: Dim PrintDoc As New PrintDocument
Print graphics from a printing event handler	Use the Graphics.DrawImage method. For example: ev.Graphics.DrawImage(Image.FromFile _ (TextBox1.Text), ev.Graphics.VisibleClipBounds)
Print text from a printing event handler	Use the Graphics.DrawString method in an event handler. For example: ev.Graphics.DrawString(TextBox1.Text, _ New Font("Arial", 11, FontStyle.Regular), _ Brushes.Black, 120, 120)
Call a printing event handler	Use the Print method of an object of type PrintDocument. For example: PrintDoc.Print()
Print multipage text documents	Write a handler for the PrintPage event, which receives an argument of the type PrintPageEventArgs. Compute the rectangular area on the page for the text, use the MeasureString method to determine how much text will fit on the current page, and use the DrawString method to print the text on the page. If additional pages are needed, set the HasMorePages property to True. When all text has been printed, set HasMorePages to False.
Open a text file by using the FileStream class, and load it into a RichTextBox object	Create a variable of type FileStream, specifying the path and file mode, load the stream into a RichTextBox, and then close the stream. For example: Imports System.IO 'at the top of the form ... Dim MyFileStream As New FileStream( _ FilePath, FileMode.Open) RichTextBox1.LoadFile(MyFileStream, _ RichTextBoxStreamType.PlainText) MyFileStream.Close()
Display printing dialog boxes in your programs	Use the PrintDialog, PrintPreviewDialog, and PageSetupDialog controls on the Printing tab of the Toolbox.