winform 获取NotifyIcon的位置

Winform 获取NotifyIcon的位置

主要代码：

public class NotifyIconHelper{    public static Rectangle GetIconRect(NotifyIcon icon)    {        RECT rect = new RECT();        NOTIFYICONIDENTIFIER notifyIcon = new NOTIFYICONIDENTIFIER();        notifyIcon.cbSize = Marshal.SizeOf(notifyIcon);        //use hWnd and id of NotifyIcon instead of guid is needed        notifyIcon.hWnd = GetHandle(icon);        notifyIcon.uID = GetId(icon);        int hresult = Shell_NotifyIconGetRect(ref notifyIcon, out rect);        //rect now has the position and size of icon        return new Rectangle(rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);    }    [StructLayout(LayoutKind.Sequential)]    private struct RECT    {        public Int32 left;        public Int32 top;        public Int32 right;        public Int32 bottom;    }    [StructLayout(LayoutKind.Sequential)]    private struct NOTIFYICONIDENTIFIER    {        public Int32 cbSize;        public IntPtr hWnd;        public Int32 uID;        public Guid guidItem;    }    [DllImport("shell32.dll", SetLastError = true)]    private static extern int Shell_NotifyIconGetRect([In]ref NOTIFYICONIDENTIFIER identifier, [Out]out RECT iconLocation);    private static FieldInfo windowField = typeof(NotifyIcon).GetField("window", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);    private static IntPtr GetHandle(NotifyIcon icon)    {        if (windowField == null) throw new InvalidOperationException("[Useful error message]");        NativeWindow window = windowField.GetValue(icon) as NativeWindow;        if (window == null) throw new InvalidOperationException("[Useful error message]");  // should not happen?        return window.Handle;    }    private static FieldInfo idField = typeof(NotifyIcon).GetField("id", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);    private static int GetId(NotifyIcon icon)    {        if (idField == null) throw new InvalidOperationException("[Useful error message]");        return (int)idField.GetValue(icon);    }}

参考资料：
1、https://stackoverflow.com/questions/26153810/get-the-applications-notifyicon-rectangle
2、http://pinvoke.net/default.aspx/shell32.Shell_NotifyIconGetRect