Delphi User's Guide
Delphi provides a printer object that can be used to print the contents of a Text Control.
The following example sends the contents of a Text Control, which can be several pages long, to the default printer:
procedure TForm1.Print1Click(Sender: TObject); var wPages, No : Integer; begin wPages := TXTextControl1.CurrentPages; Printer.BeginDoc; for No := 1 To wPages do begin TXTextControl1.PrintDevice := Printer.Canvas.Handle; TXTextControl1.PrintPage(No); if No <> wPages then Printer.NewPage; end; Printer.EndDoc; end;
After storing the number of pages in a local variable called wPages, the printer object is initialized with the Printer.BeginDoc statement. The For .. do loop runs from 1 to wPages to print all of the pages. Inside the loop there are three lines of code which print a single page:
Everything else, like calculating the line and page breaks, is done internally by Text Control. The formatting is based on the values of two groups of properties:
These properties are normally set in a page setup dialog box.