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How to make a form full-screen in C# (2010-03-11)

เรามาสร้าง Form ให้ เต็ม หน้าจอกันเถอะครับ

[DllImport("user32.dll")]
        private static extern int FindWindow(string lpszClassName, string lpszWindowName);
        [DllImport("user32.dll")]
        private static extern int ShowWindow(int hWnd, int nCmdShow);
        private const int SW_HIDE = 0;
        private const int SW_SHOW = 1;



        public void FullScreen()
        {
            Screen currentScreen = Screen.FromRectangle(this.RectangleToScreen(ClientRectangle));

            // code to maximize form fullscreen mode
            if (currentScreen.Primary)
            {
                int hWnd = FindWindow("Shell_TrayWnd", "");
                ShowWindow(hWnd, SW_HIDE);
                this.FormBorderStyle = FormBorderStyle.None;
                this.Location = new Point(0, 0);
                this.WindowState = FormWindowState.Maximized;
            }
            else
            {
                this.FormBorderStyle = FormBorderStyle.None;
                this.Location = new Point(currentScreen.Bounds.X, currentScreen.Bounds.Y);
                this.WindowState = FormWindowState.Maximized;
            }
        }

        public void NormalScreen()
        {
            Screen currentScreen = Screen.FromRectangle(this.RectangleToScreen(ClientRectangle));
            this.FormBorderStyle = FormBorderStyle.Sizable;
            if (currentScreen.Primary)
            {
                //show the hidden task bar
                int hwnd = FindWindow("Shell_TrayWnd", "");
                ShowWindow(hwnd, SW_SHOW);
            }
            this.WindowState = FormWindowState.Maximized;
        }