C#窗体全屏功能实例
2013-01-02 13:33 ArcScofield 阅读(20835) 评论(13) 编辑 收藏 举报概要：简要介绍窗体全屏的方法，列出实现窗体的全屏功能以及全屏功能的快捷键的代码；
ps：非常感谢@iheartwater的热心帮助，代码已做完善，请直接查看修改后的代码
导航：
窗体全屏的方法：
- 隐藏任务栏、设置工作区域
- 窗体最大化、设置窗体边框样式
全屏窗体代码
1 public partial class FrmFullScreen : Form 2 { 3 Boolean m_IsFullScreen = false;//标记是否全屏 4 Rectangle rectOld = Rectangle.Empty; 5 public FrmFullScreen() 6 { 7 InitializeComponent(); 8 } 9 /// <summary> 10 /// 全屏按钮的Click事件 11 /// </summary> 12 /// <param name="sender"></param> 13 /// <param name="e"></param> 14 private void btnFullScreen_Click(object sender, EventArgs e) 15 { 16 m_IsFullScreen = !m_IsFullScreen;//点一次全屏，再点还原。 17 18 SetFormFullScreen(m_IsFullScreen); 19 20 this.SuspendLayout(); 21 if (m_IsFullScreen)//全屏 22 { 23 this.WindowState = FormWindowState.Maximized; 24 this.FormBorderStyle = FormBorderStyle.None; 25 } 26 else//还原 TODO:还原后的窗体应该与全屏前的大小一致 27 { 28 this.WindowState = FormWindowState.Normal; 29 this.FormBorderStyle = FormBorderStyle.Sizable; 30 } 31 this.ResumeLayout(false); 32 } 33 /// <summary> 34 /// 全屏的快捷功能，F11相当于单机按钮；Esc健，如果全屏则退出全屏 35 /// </summary> 36 /// <param name="sender"></param> 37 /// <param name="e"></param> 38 private void btnFullScreen_KeyDown(object sender, KeyEventArgs e) 39 { 40 if (e.KeyCode == Keys.F11) 41 { 42 btnFullScreen.PerformClick(); 43 e.Handled = true; 44 } 45 else if (e.KeyCode == Keys.Escape)//esc键盘退出全屏 46 { 47 if (m_IsFullScreen) 48 { 49 e.Handled = true; 50 SetFormFullScreen(false); 51 this.WindowState = FormWindowState.Normal;//还原 52 this.FormBorderStyle = FormBorderStyle.Sizable; 53 } 54 } 55 } 56 /// <summary> 57 /// 设置全屏或这取消全屏 58 /// </summary> 59 /// <param name="fullscreen">true:全屏 false:恢复</param> 60 /// <param name="rectOld">设置的时候，此参数返回原始尺寸，恢复时用此参数设置恢复</param> 61 /// <returns>设置结果</returns> 62 public Boolean SetFormFullScreen(Boolean fullscreen)//, ref Rectangle rectOld 63 { 64 Rectangle rectOld=Rectangle.Empty; 65 Int32 hwnd = 0; 66 hwnd = FindWindow("Shell_TrayWnd", null);//获取任务栏的句柄 67 68 if (hwnd == 0) return false; 69 70 if (fullscreen)//全屏 71 { 72 ShowWindow(hwnd, SW_HIDE);//隐藏任务栏 73 74 SystemParametersInfo(SPI_GETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);//get 屏幕范围 75 Rectangle rectFull = Screen.PrimaryScreen.Bounds;//全屏范围 76 SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectFull, SPIF_UPDATEINIFILE);//窗体全屏幕显示 77 } 78 else//还原 79 { 80 ShowWindow(hwnd, SW_SHOW);//显示任务栏 81 82 SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);//窗体还原 83 } 84 return true; 85 } 86 87 #region user32.dll 88 89 [DllImport("user32.dll", EntryPoint = "ShowWindow")] 90 public static extern Int32 ShowWindow(Int32 hwnd, Int32 nCmdShow); 91 public const Int32 SW_SHOW = 5; public const Int32 SW_HIDE = 0; 92 93 [DllImport("user32.dll", EntryPoint = "SystemParametersInfo")] 94 private static extern Int32 SystemParametersInfo(Int32 uAction, Int32 uParam, ref Rectangle lpvParam, Int32 fuWinIni); 95 public const Int32 SPIF_UPDATEINIFILE = 0x1; 96 public const Int32 SPI_SETWORKAREA = 47; 97 public const Int32 SPI_GETWORKAREA = 48; 98 99 [DllImport("user32.dll", EntryPoint = "FindWindow")] 100 private static extern Int32 FindWindow(string lpClassName, string lpWindowName); 101 102 #endregion 103 }
窗体：
非常感谢@iheartwater的热心帮助，更改后的代码能够解决”全屏后，窗体能够恢复到原来的状态，包括位置（Loaction）和大小（Size）“，唉，其实，原因还挺简单的。
Modified Code
1 public partial class FrmFullScreen : Form 2 { 3 Boolean m_IsFullScreen = false;//标记是否全屏 4 5 public FrmFullScreen() 6 { 7 InitializeComponent(); 8 } 9 /// <summary> 10 /// 全屏按钮的Click事件 11 /// </summary> 12 /// <param name="sender"></param> 13 /// <param name="e"></param> 14 private void btnFullScreen_Click(object sender, EventArgs e) 15 { 16 m_IsFullScreen = !m_IsFullScreen;//点一次全屏，再点还原。 17 this.SuspendLayout(); 18 if (m_IsFullScreen)//全屏 ,按特定的顺序执行 19 { 20 SetFormFullScreen(m_IsFullScreen); 21 this.FormBorderStyle = FormBorderStyle.None; 22 this.WindowState = FormWindowState.Maximized; 23 this.Activate();// 24 } 25 else//还原，按特定的顺序执行——窗体状态，窗体边框，设置任务栏和工作区域 26 { 27 this.WindowState = FormWindowState.Normal; 28 this.FormBorderStyle = FormBorderStyle.Sizable; 29 SetFormFullScreen(m_IsFullScreen); 30 this.Activate(); 31 } 32 this.ResumeLayout(false); 33 } 34 /// <summary> 35 /// 全屏的快捷功能，F11相当于单机按钮；Esc健，如果全屏则退出全屏 36 /// </summary> 37 /// <param name="sender"></param> 38 /// <param name="e"></param> 39 private void btnFullScreen_KeyDown(object sender, KeyEventArgs e) 40 { 41 if (e.KeyCode == Keys.F11) 42 { 43 btnFullScreen.PerformClick(); 44 e.Handled = true; 45 } 46 else if (e.KeyCode == Keys.Escape)//esc键盘退出全屏 47 { 48 if (m_IsFullScreen) 49 { 50 e.Handled = true; 51 this.WindowState = FormWindowState.Normal;//还原 52 this.FormBorderStyle = FormBorderStyle.Sizable; 53 SetFormFullScreen(false); 54 } 55 } 56 } 57 /// <summary> 58 /// 设置全屏或这取消全屏 59 /// </summary> 60 /// <param name="fullscreen">true:全屏 false:恢复</param> 61 /// <param name="rectOld">设置的时候，此参数返回原始尺寸，恢复时用此参数设置恢复</param> 62 /// <returns>设置结果</returns> 63 public Boolean SetFormFullScreen(Boolean fullscreen)//, ref Rectangle rectOld 64 { 65 Rectangle rectOld=Rectangle.Empty; 66 Int32 hwnd = 0; 67 hwnd = FindWindow("Shell_TrayWnd", null);//获取任务栏的句柄 68 69 if (hwnd == 0) return false; 70 71 if (fullscreen)//全屏 72 { 73 ShowWindow(hwnd, SW_HIDE);//隐藏任务栏 74 75 SystemParametersInfo(SPI_GETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);//get 屏幕范围 76 Rectangle rectFull = Screen.PrimaryScreen.Bounds;//全屏范围 77 SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectFull, SPIF_UPDATEINIFILE);//窗体全屏幕显示 78 } 79 else//还原 80 { 81 ShowWindow(hwnd, SW_SHOW);//显示任务栏 82 83 SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);//窗体还原 84 } 85 return true; 86 } 87 88 #region user32.dll 89 90 [DllImport("user32.dll", EntryPoint = "ShowWindow")] 91 public static extern Int32 ShowWindow(Int32 hwnd, Int32 nCmdShow); 92 public const Int32 SW_SHOW = 5; public const Int32 SW_HIDE = 0; 93 94 [DllImport("user32.dll", EntryPoint = "SystemParametersInfo")] 95 private static extern Int32 SystemParametersInfo(Int32 uAction, Int32 uParam, ref Rectangle lpvParam, Int32 fuWinIni); 96 public const Int32 SPIF_UPDATEINIFILE = 0x1; 97 public const Int32 SPI_SETWORKAREA = 47; 98 public const Int32 SPI_GETWORKAREA = 48; 99 100 [DllImport("user32.dll", EntryPoint = "FindWindow")] 101 private static extern Int32 FindWindow(string lpClassName, string lpWindowName); 102 103 #endregion 104 }
http://blog.csdn.net/wuyazhe/article/details/5728286
