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用控件panel1全屏顯示；panel2全窗口顯示

通過panel1、panel事件MouseDoubleClick實現。

遮蓋panel1上的控件屬性的Enabled設置為false，避免捕捉不到雙擊。

顯示界面如下：

代碼：

using System.Runtime.InteropServices;
namespace 雙擊全屏顯示或恢復
{
    public partial class Form1 : Form
    {
        [DllImport("user32.dll", SetLastError = true)]
        static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);
        [DllImport("user32.dll", SetLastError = true)]
        static extern IntPtr GetDesktopWindow();
        [DllImport("user32.dll", SetLastError = true)]
        static extern IntPtr GetParent(IntPtr hWnd);
        [DllImport("user32.dll", SetLastError = true)]
        static extern int GetSystemMetrics(int nIndex);
        [DllImport("user32.dll", EntryPoint = "ShowWindow", CharSet = CharSet.Auto)]
        public static extern int ShowWindow(IntPtr hwnd, int nCmdShow);
        [DllImport("User32.dll ", EntryPoint = "FindWindow")]
        private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        public int SW_HIDE = 0;
        public int SW_RESTORE = 9;
        public bool m_bIsFullScreen = false;//判斷是否全屏
        public bool m_bIsFillDock = false;//判斷是否全容器
        Rectangle m_RecPanel1 = new Rectangle();//獲取原始大小
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            m_RecPanel1 = panel1.Bounds;//獲得panel1原始Bounds范圍大小
        }
        //控件panel1全屏顯示
        private void panel1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (!m_bIsFullScreen)
            {
                //獲取桌面窗口并設置為父窗口
                IntPtr hDesk = GetDesktopWindow();
                SetParent(this.panel1.Handle, hDesk);
                int width = GetSystemMetrics(0);
                int height = GetSystemMetrics(1);
                this.panel1.Dock = DockStyle.None;//這個很重要,Anchor屬性仍可用
                this.panel1.Bounds = new Rectangle(new Point(0, 0), new Size(width, height));
                ShowWindow(FindWindow("Shell_TrayWnd", null), SW_HIDE);//隱藏Windows任務欄
                //ShowWindow(FindWindow("Button", null), SW_HIDE);
                m_bIsFullScreen = true;
            }
            else
            {
                //獲取桌面窗口并設置為父窗口
                IntPtr hDesk = GetDesktopWindow();
                SetParent(this.panel1.Handle, this.Handle);
                int width = GetSystemMetrics(0);
                int height = GetSystemMetrics(1);
                this.panel1.Dock = DockStyle.None;//這個很重要,Anchor屬性仍可用
                this.panel1.Bounds = m_RecPanel1;
                ShowWindow(FindWindow("Shell_TrayWnd", null), SW_RESTORE);//Shell_TrayWnd是任務欄的類名
                m_bIsFullScreen = false;
            }
        }
        //全窗口顯示
        //也可以用全屏的方法將   panel2.Bounds=窗口的大小;
        private void panel2_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (!m_bIsFillDock)
            {
                this.panel2.Parent = this;//以窗口為父控件
                this.panel2.Dock = DockStyle.Fill;//填充至整個父控件大小
                panel2.BringToFront();//可以沒有，用來保證panel2在最前面，但是還原時候會遮蓋原來在上面的控件
                m_bIsFillDock = true;
            }
            else
            {
                this.panel2.Parent = this;
                this.panel2.Dock = DockStyle.None;
                //panel2.BringToFront();
                m_bIsFillDock = false;
            }
        }
    }
}

源代碼下載鏈接：

https://share.weiyun.com/imRUNgZj