操作打印机任务，200分求代码！

2009-09-09 09:21:50 200 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

芯片设计新思路：如何用SystemC+TLM2.0快速搭建ESL性能模型（附GEM5实战案例）本文探讨了在芯片设计早期利用SystemC和TLM2.0标准快速构建电子系统级（ESL）性能模型的方法。通过对比不同抽象层次，详细介绍了如何搭建事务级模型，并与GEM5仿真平台协同，实现高效的架构探索和性能评估。文章最后通过一个片上网络（NoC）带宽优化的实战案例，展示了该方法如何驱动数据驱动的设计决策，从而在流片前规避风险、优化芯片性能。阅读详情

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华为OD机试 - 打印机队列 - 优先队列（Java 双机位C卷 200分）优先队列是一种数据结构，它按照元素的优先级顺序进行排列，每次访问总是返回优先级最高（或最低）的元素。阅读详情

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切换为时间正序

A阿_Qiang 2009-09-10

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学习了，顶！

joeweng 2009-09-10

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学习

dingyacan 2009-09-09

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解决了,结贴,[BitCoffee]来第二贴拿分

wuyq11 2009-09-09

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[DllImport("winspool.drv", CharSet = CharSet.Auto)]
public static extern bool OpenPrinter(string pPrinterName, out IntPtr phPrinter, IntPtr pDefault);
[DllImport("winspool.drv", CharSet = CharSet.Auto)]
public static extern bool ClosePrinter(IntPtr hPrinter);
[DllImport("winspool.drv", CharSet = CharSet.Auto)]
public static extern int EnumJobs(IntPtr hPrinter, int FirstJob, int NoJobs, int Level, IntPtr pInfo, int cdBuf,out int pcbNeeded, out int pcReturned);
OpenPrinter，用来获取给定打印机的句柄，通过该句柄可以实现对相应打印机的操作。
EnumJobs，用来列出所指定打印机上正在打印的作业信息

castlooo 2009-09-09

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学习

gui0605 2009-09-09

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参考

gisyellow 2009-09-09

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学习了。。

BitCoffee 2009-09-09

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        using System.Runtime.InteropServices;



        unsafe struct PRINTER_DEFAULTS

        {

            public void* pDatatype;     // LPTSTR

            public void* pDevMode;      // LPDEVMODE

            public uint DesiredAccess; // ACCESS_MASK

        };



        [DllImport("kernel32", SetLastError = true)]

        static extern int GetLastError();



        [DllImport("WinSpool.drv", SetLastError = true)]

        static extern unsafe bool OpenPrinter

        (string pPrinterName, int* phPrinter, void* pDefault);



        [DllImport("WinSpool.drv", SetLastError = true)]

        static extern bool ClosePrinter(int hPrinter);



        [DllImport("WinSpool.drv", SetLastError = true)]

        static extern unsafe bool SetPrinter

        (int hPrinter, uint Level, void* pPrinter, uint Command);



        const uint PRINTER_ACCESS_ADMINISTER = 0x00000004;

        const uint PRINTER_STATUS_OFFLINE = 0x00000080;

        const uint PRINTER_CONTROL_PAUSE = 1;

        const uint PRINTER_CONTROL_RESUME = 2;

        const uint PRINTER_CONTROL_PURGE = 3;

        const uint PRINTER_CONTROL_SET_STATUS = 4;



        // Open a printer for administration operations.

        static unsafe int CSOpenPrinter(string printerName)

        {

            bool bResult;

            int hPrinter;

            PRINTER_DEFAULTS pd;



            pd.pDatatype = null;

            pd.pDevMode = null;

            pd.DesiredAccess = PRINTER_ACCESS_ADMINISTER;



            bResult = OpenPrinter(printerName, &hPrinter, &pd);

            if (!bResult)

            {

                throw new ApplicationException("Cannot open printer '" +

                                                printerName + "' " +

                                                Marshal.GetLastWin32Error());

            }

            return hPrinter;

        }



        // Close the printer.

        static void CSClosePrinter(int hPrinter)

        {

            if (!ClosePrinter(hPrinter))

            {

                throw new ApplicationException("Cannot close printer " +

                                                Marshal.GetLastWin32Error());

            }

        }



        // Pause printer.

        static unsafe void CSPausePrinter(int hPrinter)

        {

            if (!SetPrinter(hPrinter, 0, null, PRINTER_CONTROL_PAUSE))

            {

                throw new ApplicationException("Cannot pause printer " +

                                                Marshal.GetLastWin32Error());

            }

        }



        // Delete printer.

        static unsafe void CSDeletePrinter(int hPrinter)

        {

            if (!SetPrinter(hPrinter, 0, null, PRINTER_CONTROL_PURGE))

            {

                throw new ApplicationException("Cannot delete printer " +

                                                Marshal.GetLastWin32Error());

            }

        }



        // Resume printer.

        static unsafe void CSResumePrinter(int hPrinter)

        {

            if (!SetPrinter(hPrinter, 0, null, PRINTER_CONTROL_RESUME))

            {

                throw new ApplicationException("Cannot resume printer " +

                                                Marshal.GetLastWin32Error());

            }

        }



        // Disable printer (offline).

        static unsafe void CSDisablePrinter(int hPrinter)

        {

            if (!SetPrinter(hPrinter, 0,

                           (byte*)PRINTER_STATUS_OFFLINE,

                            PRINTER_CONTROL_SET_STATUS))

            {

                throw new ApplicationException("Cannot disable printer " +

                                                Marshal.GetLastWin32Error());

            }

        }



        // Enable printer.

        static unsafe void CSEnablePrinter(int hPrinter)

        {

            if (!SetPrinter(hPrinter, 0, (byte*)0, PRINTER_CONTROL_SET_STATUS))

            {

                throw new ApplicationException("Cannot enable printer " +

                                                Marshal.GetLastWin32Error());

            }

        }



        //

        int hPrinter;

            try 

            {

                hPrinter = CSOpenPrinter("打印机名");

                CSPausePrinter(hPrinter);

                CSDeletePrinter(hPrinter);

                CSClosePrinter(hPrinter);

            }

            catch 

            {



            }

操作打印机任务，200分求代码！

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