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- using System;
- using System.IO;
- using System.Runtime.InteropServices;
- using System.Text;
-
- namespace Windows
- {
- internal class GuiConsole
- {
- public static void CreateConsole()
- {
- if (hasConsole)
- return;
- if (oldOut == IntPtr.Zero)
- oldOut = GetStdHandle(-11);
- if (!AllocConsole())
- throw new Exception("AllocConsole() failed");
- conOut = CreateFile("CONOUT$", 0x40000000, 2, IntPtr.Zero, 3, 0, IntPtr.Zero);
- if (!SetStdHandle(-11, conOut))
- throw new Exception("SetStdHandle() failed");
- StreamToConsole();
- hasConsole = true;
- }
- public static void ReleaseConsole()
- {
- if (!hasConsole)
- return;
- if (!CloseHandle(conOut))
- throw new Exception("CloseHandle() failed");
- conOut = IntPtr.Zero;
- if (!FreeConsole())
- throw new Exception("FreeConsole() failed");
- if (!SetStdHandle(-11, oldOut))
- throw new Exception("SetStdHandle() failed");
- StreamToConsole();
- hasConsole = false;
- }
- private static void StreamToConsole()
- {
- Stream cstm = Console.OpenStandardOutput();
- StreamWriter cstw = new StreamWriter(cstm, Encoding.Default);
- cstw.AutoFlush = true;
- Console.SetOut(cstw);
- Console.SetError(cstw);
- }
- private static bool hasConsole = false;
- private static IntPtr conOut;
- private static IntPtr oldOut;
- [DllImport("kernel32.dll", SetLastError = true)]
- private static extern bool AllocConsole();
- [DllImport("kernel32.dll", SetLastError = false)]
- private static extern bool FreeConsole();
- [DllImport("kernel32.dll", SetLastError = true)]
- private static extern IntPtr GetStdHandle(int nStdHandle);
- [DllImport("kernel32.dll", SetLastError = true)]
- private static extern bool SetStdHandle(int nStdHandle, IntPtr hConsoleOutput);
- [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
- private static extern IntPtr CreateFile(
- string fileName,
- int desiredAccess,
- int shareMode,
- IntPtr securityAttributes,
- int creationDisposition,
- int flagsAndAttributes,
- IntPtr templateFile);
- [DllImport("kernel32.dll", ExactSpelling = true, SetLastError = true)]
- private static extern bool CloseHandle(IntPtr handle);
- }
- }
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