delphi 获取打印机默认纸张_Delphi中如何控制打印方向，纸张大小等 | 学步园

如何在程序里控制打印纸张大小(A3，A4)和打印方向？不想打开设置窗口

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Uses     Printer;

.........

procedure     TForm1.Button1Click(Sender:     TObject);

var

ADevice,     ADriver,     APort:     array[0..255]     of     Char;

DeviceHandle:     THandle;

DevMode:     PDeviceMode;

begin

//初始化打印机

Printer.GetPrinter(ADevice,     ADriver,     APort,     DeviceHandle);

if     DeviceHandle     =     0     then

begin

Printer.PrinterIndex     :=     Printer.PrinterIndex;

Printer.GetPrinter(ADevice,     ADriver,     APort,     DeviceHandle);

end;

if     DeviceHandle   &