Question

我正在尝试使用kernel32.dll在控制台上编写符号（因为当写入最后一行的最后一个符号时，标准Console.Write正在扩展控制台窗口）
问题是WriteConsoleOutput返回0x06女巫是INVALID_HANDLE_VALUE。但是当我使用SetWindowText时（即使用它，因为它使用窗口的句柄来设置文本）它改变了控制台标题。
我试图通过GetStdHandle(STD_OUTPUT_HANDLE)，WriteConsoleOutput处理，然后返回0x02女巫ERROR_FILE_NOT_FOUND 我做错了什么？如有任何帮助，我将不胜感激这是进口：

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

[DllImport("kernel32.dll")]
static extern uint GetLastError();

[DllImport("kernel32.dll", SetLastError = true)]
static extern bool WriteConsoleOutput( IntPtr consoleHandle, CharInfo[,] buffer, Coord bufSize, Coord bufZero, ref Rect drawRect );
// This is for test
[DllImport("user32.dll")]
static extern bool SetWindowText(IntPtr hWnd, string text);

的Structs

[StructLayout(LayoutKind.Explicit)]
public struct CharInfo
{
    [FieldOffset(0)]
    internal char UnicodeChar;
    [FieldOffset(0)]
    internal char AsciiChar;
    [FieldOffset(2)]
    internal ushort Attributes;
}

[StructLayout(LayoutKind.Sequential)]
public struct Coord
{
    public short X; public short Y;
    public Coord(short x, short y) { X = x; Y = y; }
};

[StructLayout(LayoutKind.Sequential)]
public struct Rect
{
    public short Left;
    public short Top;
    public short Right;
    public short Bottom;
}

我使用的代码

Console.Clear();
IntPtr h = GetConsoleWindow();
SetWindowText(h, "we have found console");

var rect = new Rect() { Left = 10, Top = 0, Right = 11, Bottom = 1 };
var bufsz = new Coord(2, 2);
var buf = new CharInfo[2, 2];
buf[0, 0] = new CharInfo() { AsciiChar = '+' };
var bufpos = new Coord(0, 0);

WriteConsoleOutput(h, buf, bufsz, bufpos, ref rect);
var err = GetLastError();
if (err != 0) Console.WriteLine("Write fail: " + err);

编辑：
没工作

Process.GetCurrentProcess().MainWindowHandle;
// same error

这也是

[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetStdHandle(int nHandle);
...
IntPtr h = GetStdHandle(-11);
// Error 1400 - wrong handle while accessing from email (or something like that)

C＃Kernel32.dll WriteConsoleOutput错误6 - 句柄无效

0 个答案: