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...
uses
Printers, WinSpool;
...
function TForm1.GetCurrentPrinterHandle: THandle;
const
Defaults: TPrinterDefaults = (
pDataType: nil;
pDevMode: nil;
DesiredAccess: PRINTER_ACCESS_USE or
PRINTER_ACCESS_ADMINISTER);
var
Device, Driver, Port: array[0..255] of char;
hDeviceMode: THandle;
begin
Printer.GetPrinter(Device, Driver, Port, hDeviceMode);
if not OpenPrinter(@Device, result, @Defaults) then
RaiseLastWin32Error;
end;
function TForm1.GetPrinterStatus: string;
var
hPrinter: THandle;
bytesNeeded, i: cardinal;
pInfo: PPrinterInfo2;
S: string;
begin
GetPrinter( hPrinter, 2, Nil, 0, @bytesNeeded );
pInfo := AllocMem( bytesNeeded );
try
GetPrinter( hPrinter, 2, pInfo, bytesNeeded, @bytesNeeded );
EXCEPT
case pInfo^.Status of
PRINTER_STATUS_PAPER_OUT: S := 'PRINTER_STATUS_PAPER_OUT';
PRINTER_STATUS_PAPER_PROBLEM: S := 'PRINTER_STATUS_PAPER_PROBLEM';
else
S := 'Unknown';
end;
end;
end;
procedure TForm1.BtnStatusClick(Sender: TObject);
begin
ShowMessage(GetPrinterStatus());
end; |
Partager