Question

c# 如何调用打印机 打印PDF文件

PDF文件已经存在
现在如何不需要打开PDF
不需要点击打印就能打印PDF文件

Answer 1

调用api弹出打印机属性对话框
Author:vitoriatang
From:Internet
.NET Framework封装了很多关于打印的对话框，比如说PrintDialog, PageSetupDialog.
但是有的时候我们还需要关心打印机属性对话框，那么就可以调用API来解决这个问题。有几个API函数与之相关
PrinterProperties
DocumentProperties
OpenPrinter
ClosePrinter
逐一介绍
printerproperties
显示打印机属性对话框。
documentproperties
显示打印机配置对话框。
openprinter
打开打印机
closeprinter
关闭打印机
在调用printerproperties或者documentproperties的时候，都需要先调用openprinter，并在结束后调用closeprinter。
至于打印机属性和打印机配置有什么不同，就自己领会了。更为详尽的信息可以查阅msdn
sample codes:
1. 声明API函数
[System.Runtime.InteropServices.DllImportAttribute("winspool.drv", SetLastError = true)]
public extern static int DocumentProperties(
IntPtr hWnd, // handle to parent window
IntPtr hPrinter, // handle to printer object
string pDeviceName, // device name
ref IntPtr pDevModeOutput, // modified device mode
ref IntPtr pDevModeInput, // original device mode
int fMode); // mode options
[System.Runtime.InteropServices.DllImportAttribute("winspool.drv")]
public static extern int PrinterProperties(
IntPtr hwnd, // handle to parent window
IntPtr hPrinter); // handle to printer object
[System.Runtime.InteropServices.DllImportAttribute("winspool.drv", SetLastError = true)]
public extern static int OpenPrinter(
string pPrinterName, // printer name
ref IntPtr hPrinter, // handle to printer object
ref IntPtr pDefault); // handle to default printer object.
[System.Runtime.InteropServices.DllImportAttribute("winspool.drv", SetLastError = true)]
public static extern int ClosePrinter(
IntPtr phPrinter); // handle to printer object

2．调用DocumentProperties
private void documentPropButton_Click(object sender, EventArgs e)
{
string printerName = _document.PrinterSettings.PrinterName;
if (printerName != null &;amp;&;amp; printerName.Length > 0)
{
IntPtr pPrinter = IntPtr.Zero;
IntPtr pDevModeOutput = IntPtr.Zero;
IntPtr pDevModeInput = IntPtr.Zero;
IntPtr nullPointer = IntPtr.Zero;
OpenPrinter(printerName, ref pPrinter, ref nullPointer);
int iNeeded = DocumentProperties(this.Handle, pPrinter, printerName, ref pDevModeOutput, ref pDevModeInput, 0);
pDevModeOutput = System.Runtime.InteropServices.Marshal.AllocHGlobal(iNeeded);
DocumentProperties(this.Handle, pPrinter, printerName, ref pDevModeOutput, ref pDevModeInput, DM_PROMPT);
ClosePrinter(pPrinter);
}
}

3． 调用PrinterProperties
private void printPropButton_Click(object sender, EventArgs e)
{
string printerName = _document.PrinterSettings.PrinterName;
if (printerName != null &;amp;&;amp; printerName.Length > 0)
{
IntPtr pPrinter = IntPtr.Zero;
IntPtr pDevModeOutput = IntPtr.Zero;
IntPtr pDevModeInput = IntPtr.Zero;
IntPtr nullPointer = IntPtr.Zero;
OpenPrinter(printerName, ref pPrinter, ref nullPointer);
int iNeeded = PrinterProperties(this.Handle, pPrinter);
ClosePrinter(pPrinter);
}
}

Answer 2

鼠标放在需要打印的文件上，右键单击、按p键。