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  • 通过进程ID获取窗口句柄(微软)

    View Code
    public class MyProcess
    {
    private bool haveMainWindow = false;
    private IntPtr mainWindowHandle = IntPtr.Zero;
    private int processId = 0;

    private delegate bool EnumThreadWindowsCallback(IntPtr hWnd, IntPtr lParam);

    public IntPtr GetMainWindowHandle(int processId)
    {
    if (!this.haveMainWindow)
    {
    this.mainWindowHandle = IntPtr.Zero;
    this.processId = processId;
    EnumThreadWindowsCallback callback = new EnumThreadWindowsCallback(this.EnumWindowsCallback);
    EnumWindows(callback, IntPtr.Zero);
    GC.KeepAlive(callback);

    this.haveMainWindow = true;
    }
    return this.mainWindowHandle;
    }

    private bool EnumWindowsCallback(IntPtr handle, IntPtr extraParameter)
    {
    int num;
    GetWindowThreadProcessId(new HandleRef(this, handle), out num);
    if ((num == this.processId) && this.IsMainWindow(handle))
    {
    this.mainWindowHandle = handle;
    return false;
    }
    return true;
    }

    private bool IsMainWindow(IntPtr handle)
    {
    return (!(GetWindow(new HandleRef(this, handle), 4) != IntPtr.Zero) && IsWindowVisible(new HandleRef(this, handle)));
    }

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool EnumWindows(EnumThreadWindowsCallback callback, IntPtr extraData);

    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern int GetWindowThreadProcessId(HandleRef handle, out int processId);

    [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
    public static extern IntPtr GetWindow(HandleRef hWnd, int uCmd);

    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern bool IsWindowVisible(HandleRef hWnd);
    }
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  • 原文地址:https://www.cnblogs.com/ghypnus/p/2410819.html
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