Wednesday, March 2, 2011


"Printers" unit contains all most all the methods and properties you'd need to control Windows' printer interface. For example, you can easily retrieve the name of the default printer by using the "Printer" (ready to use instance of the "TPrinter" class) object of the "Printers" unit as follows:

uses Printers;

function GetDefaultPrinterName : string;
  if(Printer.PrinterIndex > 0)then
    GetDefaultPrinterName :=
        Printer.PrinterIndex ];
  end else
    GetDefaultPrinterName := '';
If you want to display a list of available printers (using a "TComboBox" named "ComboBox1" for example):
ComboBox1.Items := Printer.Printers;
Changing the currently selected printer on the other hand is as easy as setting the "PrinterIndex" property. To use the first printer listed in the "Printers" property, set "PrinterIndex" to "0" (1st printer = 0, 2nd printer = 1, etc.).
You can also retrieve the status of a print job by using "Printing" and "Aborted" boolean properties.

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