csharpClipper/NativeMethods.cs at main · XeinTDM/csharpClipper · GitHub

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using System.Runtime.InteropServices;

namespace csharpClipper;

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

[StructLayout(LayoutKind.Sequential)]
public struct MSG
{
    public IntPtr hwnd;
    public uint message;
    public IntPtr wParam;
    public IntPtr lParam;
    public uint time;
    public POINT pt;
}

internal static class NativeMethods
{
    public const int CF_UNICODETEXT = 13;
    public const int WM_CLIPBOARDUPDATE = 0x031D;
    public const int WM_QUIT = 0x0012;
    public const int HWND_MESSAGE = -3;
    public const uint GMEM_MOVEABLE = 0x0002;

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool OpenClipboard(IntPtr hwnd);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool CloseClipboard();

    [DllImport("user32.dll", SetLastError = true)]
    public static extern IntPtr GetClipboardData(uint uFormat);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool EmptyClipboard();

    [DllImport("user32.dll", SetLastError = true)]
    public static extern IntPtr SetClipboardData(uint uFormat, IntPtr hMem);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool AddClipboardFormatListener(IntPtr hwnd);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool RemoveClipboardFormatListener(IntPtr hwnd);

    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern IntPtr GlobalLock(IntPtr hMem);

    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern bool GlobalUnlock(IntPtr hMem);

    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
    public static extern IntPtr CreateWindowEx(
        int dwExStyle, string lpClassName, string lpWindowName,
        int dwStyle, int x, int y, int nWidth, int nHeight,
        IntPtr hWndParent, IntPtr hMenu, IntPtr hInstance, IntPtr lpParam);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern IntPtr DefWindowProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern void PostQuitMessage(int nExitCode);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool GetMessage(out MSG lpMsg, IntPtr hWnd, uint wMsgFilterMin, uint wMsgFilterMax);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool TranslateMessage(ref MSG lpMsg);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern IntPtr DispatchMessage(ref MSG lpMsg);

    [DllImport("user32.dll", SetLastError = true)]
    public static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern IntPtr GlobalAlloc(uint uFlags, UIntPtr dwBytes);

    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern IntPtr GlobalFree(IntPtr hMem);
    public static IntPtr CreateMessageOnlyWindow()
    {
        return CreateWindowEx(
            0, "STATIC", null, 0, 0, 0, 0, 0,
            (IntPtr)HWND_MESSAGE, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
    }
}