医疗类网站前置审批,网站作业二级网页,合肥建设厅网站,佛山做外贸网站流程Silverlight5支持PostScript矢量打印#xff0c;矢量打印相比于位图打印速度更快#xff0c;生成的打印文件更小。SL5默认会采用PS矢量打印#xff0c;如果打印机不支持#xff0c;自动切换到位图打印。 虽然微软SL打印组认为PS已经相当普遍#xff0c;但我想大多数打印机…Silverlight5支持PostScript矢量打印矢量打印相比于位图打印速度更快生成的打印文件更小。SL5默认会采用PS矢量打印如果打印机不支持自动切换到位图打印。 虽然微软SL打印组认为PS已经相当普遍但我想大多数打印机估计并未安装支持PostScript的驱动。HP打印机默认的会是PCL的估计微软选用PS是学Flash 如何用代码检测打印机是否支持PostScript呢代码如下 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.Runtime.InteropServices;namespace PrinterSupportPS
{class Program{static void Main(string[] args){string printerName Microsoft XPS Document Writer;Console.WriteLine(PrinterSupportsPostScript(printerName));Console.Read();}static Int32 GETTECHNOLOGY 20;static Int32 QUERYESCSUPPORT 8;static Int32 POSTSCRIPT_PASSTHROUGH 4115;static Int32 ENCAPSULATED_POSTSCRIPT 4116;static Int32 POSTSCRIPT_IDENTIFY 4117;static Int32 POSTSCRIPT_INJECTION 4118;static Int32 POSTSCRIPT_DATA 37;static Int32 POSTSCRIPT_IGNORE 38;[DllImport(gdi32.dll)]static extern int ExtEscape(IntPtr hdc, int nEscape, int cbInput,IntPtr lpszInData, int cbOutput, IntPtr lpszOutData);[DllImport(gdi32.dll)]static extern IntPtr CreateDC(string lpszDriver, string lpszDevice,IntPtr lpszOutput, IntPtr lpInitData);[DllImport(gdi32.dll)]static extern bool DeleteDC(IntPtr hdc);static bool PrinterSupportsPostScript(string printername){ArrayList PSChecks new ArrayList();PSChecks.Add(POSTSCRIPT_PASSTHROUGH);PSChecks.Add(ENCAPSULATED_POSTSCRIPT);PSChecks.Add(POSTSCRIPT_IDENTIFY);PSChecks.Add(POSTSCRIPT_INJECTION);PSChecks.Add(POSTSCRIPT_DATA);PSChecks.Add(POSTSCRIPT_IGNORE);IntPtr hDC IntPtr.Zero; ;IntPtr BLOB IntPtr.Zero;try{hDC CreateDC(null, printername, IntPtr.Zero, IntPtr.Zero);int isz 4;BLOB Marshal.AllocCoTaskMem(isz);Marshal.WriteInt32(BLOB, GETTECHNOLOGY);int test ExtEscape(hDC, QUERYESCSUPPORT, 4, BLOB, 0, IntPtr.Zero);if (test 0) return false; // printer driver does not support GETTECHNOLOGY Checks.foreach (Int32 val in PSChecks){Marshal.WriteInt32(BLOB, val);test ExtEscape(hDC, QUERYESCSUPPORT, isz, BLOB, 0, IntPtr.Zero);if (test ! 0) return true; // if any of the checks pass, return true}}catch (Exception ex) { Console.WriteLine(ex); }finally{if (hDC ! IntPtr.Zero) DeleteDC(hDC);if (BLOB ! IntPtr.Zero) Marshal.Release(BLOB);};return false;}}
} 大家可以建一个控制台程序用这段代码检测一下。转载于:https://www.cnblogs.com/slmk/archive/2012/08/26/2657230.html
