c# - 在屏幕左下角放置一个小的控制台窗口？

Question

正如标题所说，我想把它放在屏幕的左下角。这是我到目前为止的代码:

    Console.WindowWidth = 50
    Console.WindowHeight = 3
    Console.BufferWidth = 50
    Console.BufferHeight = 3
    Console.BackgroundColor = ConsoleColor.Black
    Console.ForegroundColor = ConsoleColor.DarkMagenta
    Console.Title = "My Title"
    Console.WriteLine("")
    Console.Write(" Press any key to close this window ...")

    Console.ReadKey()

Answer 1

注意:不管它们的名字如何，设置 Console.WindowLeft 和 Console.WindowTop 的 System.Console class 不会改变窗口在屏幕上的位置。
相反，它们相对于(可能更大的)窗口 缓冲区 定位窗口的可见部分 - 您不能使用类型 System.Console 来更改控制台的位置屏幕上的窗口 - 您需要为此使用 Windows API。

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以下是完整控制台应用程序的代码，它将自己的窗口定位在屏幕的左下角，遵循任务栏的位置.

注意:

• 它应该与多显示器设置一起工作 - 将窗口定位在它(主要)显示的特定显示器(显示器、屏幕)上 - 但我没有亲自验证

• 仅通过 P/Invoke 声明使用 Windows API 函数，避免引用 WinForms 程序集 (System.Windows.Forms)，这是控制台应用程序通常不需要。

  • 您会看到很大一部分代码专门用于 P/Invoke 签名(声明)以与 native Windows API 交互；这些是感激地改编自 pinvoke.net

  • 相比之下，Main() 方法中的实际代码比较短。

• 如果您从 Visual Studio 中的控制台应用程序项目编译以下代码，并从 cmd.exe 控制台窗口(命令提示符)运行生成的可执行文件，该控制台窗口应该移动到(包含屏幕)的左下角。

  • 要在从 Visual Studio 运行时验证功能，请在关闭的 处放置一个断点，并在执行暂停时，按 Alt-Tab 键到控制台窗口以验证其位置。

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using System;
using System.Runtime.InteropServices; // To enable P/Invoke signatures.

public static class PositionConsoleWindowDemo
{

    // P/Invoke declarations.

    [DllImport("kernel32.dll")]
    static extern IntPtr GetConsoleWindow();

    [DllImport("user32.dll")]
    static extern IntPtr MonitorFromWindow(IntPtr hwnd, uint dwFlags);

    const int MONITOR_DEFAULTTOPRIMARY = 1;

    [DllImport("user32.dll")]
    static extern bool GetMonitorInfo(IntPtr hMonitor, ref MONITORINFO lpmi);

    [StructLayout(LayoutKind.Sequential)]
    struct MONITORINFO
    {
        public uint cbSize;
        public RECT rcMonitor;
        public RECT rcWork;
        public uint dwFlags;
        public static MONITORINFO Default
        {
            get { var inst= new MONITORINFO(); inst.cbSize = (uint)Marshal.SizeOf(inst); return inst; }
        }
    }

    [StructLayout(LayoutKind.Sequential)]
    struct RECT
    {
        public int Left, Top, Right, Bottom;
    }

    [StructLayout(LayoutKind.Sequential)]
    struct POINT
    {
        public int x, y;
    }

    [DllImport("user32.dll", SetLastError = true)]
    static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);

    [DllImport("user32.dll", SetLastError = true)]
    static extern bool SetWindowPlacement(IntPtr hWnd, [In] ref WINDOWPLACEMENT lpwndpl);

    const uint SW_RESTORE= 9;

    [StructLayout(LayoutKind.Sequential)]
    struct WINDOWPLACEMENT
    {
        public uint Length;
        public uint Flags;
        public uint ShowCmd;
        public POINT MinPosition;
        public POINT MaxPosition;
        public RECT NormalPosition;
        public static WINDOWPLACEMENT Default
        {
            get
            {
                var instance = new WINDOWPLACEMENT();
                instance.Length = (uint) Marshal.SizeOf(instance);
                return instance;
            }
        }
    }

    public static void Main()
    {
        // Get this console window's hWnd (window handle).
        IntPtr hWnd = GetConsoleWindow();

        // Get information about the monitor (display) that the window is (mostly) displayed on.
        // The .rcWork field contains the monitor's work area, i.e., the usable space excluding
        // the taskbar (and "application desktop toolbars" - see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724947(v=vs.85).aspx)
        var mi = MONITORINFO.Default;
        GetMonitorInfo(MonitorFromWindow(hWnd, MONITOR_DEFAULTTOPRIMARY), ref mi);

        // Get information about this window's current placement.
        var wp = WINDOWPLACEMENT.Default;
        GetWindowPlacement(hWnd, ref wp);

        // Calculate the window's new position: lower left corner.
        // !! Inexplicably, on W10, work-area coordinates (0,0) appear to be (7,7) pixels 
        // !! away from the true edge of the screen / taskbar.
        int fudgeOffset = 7;
        wp.NormalPosition = new RECT() {
            Left = -fudgeOffset,
            Top = mi.rcWork.Bottom - (wp.NormalPosition.Bottom - wp.NormalPosition.Top),
            Right = (wp.NormalPosition.Right - wp.NormalPosition.Left),
            Bottom = fudgeOffset + mi.rcWork.Bottom
        };

        // Place the window at the new position.
        SetWindowPlacement(hWnd, ref wp);

    }

}