是否有用于Vista的API来检测桌面是否正在全屏运行? [英] Is there an API for vista to detect if the desktop is running full screen?

问题描述

例如，用户是在全屏播放电影还是在全屏模式下查看Powerpoint?

e.g, Is the user playing a movie full screen, or looking at powerpoint in full screen mode?

我可能发誓我以前见过IsFullScreenInteractive API，但现在找不到它

I could have sworn I saw a IsFullScreenInteractive API before, but can't find it now

推荐答案

这是我解决此问题的方法:

Here's how I've solved this problem:

using System;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(IsForegroundWwindowFullScreen());
        }

        [DllImport("user32.dll")]
        static extern IntPtr GetForegroundWindow();

        [DllImport("user32.dll")]
        static extern int GetSystemMetrics(int smIndex);

        public const int SM_CXSCREEN = 0;
        public const int SM_CYSCREEN = 1;

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool GetWindowRect(IntPtr hWnd, out W32RECT lpRect);

        [StructLayout(LayoutKind.Sequential)]
        public struct W32RECT
        {
            public int Left;
            public int Top;
            public int Right;
            public int Bottom;
        }

        public static bool IsForegroundWwindowFullScreen()
        {
            int scrX = GetSystemMetrics(SM_CXSCREEN),
                scrY = GetSystemMetrics(SM_CYSCREEN);

            IntPtr handle = GetForegroundWindow();
            if (handle == IntPtr.Zero) return false;

            W32RECT wRect;
            if (!GetWindowRect(handle, out wRect)) return false;

            return scrX == (wRect.Right - wRect.Left) && scrY == (wRect.Bottom - wRect.Top);
        }
    }
}

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