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Assignprn - treats the printer as a text file - an easy way of printing text printers unit

procedure AssignPrn ( var FileHandle : TextFile ) ; Description The AssignPrn procedure assigns the printer to a FileHandle. This means that subsequent text writing to this file gets rerouted to the printer. This provides a simpl and easy way of dumping out text to a printer. Notes Warning : The AssignPrn mechanism is useful for simple programs, but lacks any control over printing for a real application. Related commands AssignFile Assigns a file handle to a binary or text file CloseFile Closes an open file ReWrite Open a text or binary file for write access Write Write data to a binary or text file WriteLn Write a complete line of data to a text file Example code : Print a few words to the printer var myFile : TextFile; printDialog : TPrintDialog; begin // Create a printer selection dialog printDialog := TPrintDialog.Create(Form1); // If the user has selected a printer (or default), then print! if printDialog.Execute then begin // Try to open a printer file AssignPrn(myFile); // Now prepare to write to the printer ReWrite(myFile); // Write a couple of well known words to this file - // they will be printed instead WriteLn(myFile, 'Hello'); WriteLn(myFile, 'World'); // Close the file CloseFile(myFile); end; end; Show full unit code After the user selects a printer, the following text is printed in a small font at the top left of the page: Hello World