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
public partial class FrmFullScreen : Form
{
Boolean m_IsFullScreen = false;//标记是否全屏
Rectangle rectOld = Rectangle.Empty;
public FrmFullScreen()
{
InitializeComponent();
}
/// <summary>
/// 全屏按钮的Click事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnFullScreen_Click(object sender, EventArgs e)
{
m_IsFullScreen = !m_IsFullScreen;//点一次全屏，再点还原。
SetFormFullScreen(m_IsFullScreen);
this.SuspendLayout();
if (m_IsFullScreen)//全屏
{
this.WindowState = FormWindowState.Maximized;
this.FormBorderStyle = FormBorderStyle.None;
}
else//还原 TODO:还原后的窗体应该与全屏前的大小一致
{
this.WindowState = FormWindowState.Normal;
this.FormBorderStyle = FormBorderStyle.Sizable;
}
this.ResumeLayout(false);
}
/// <summary>
/// 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
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnFullScreen_KeyDown(object sender, KeyEventArgs e)
{
if (e.KeyCode == Keys.F11)
{
btnFullScreen.PerformClick();
e.Handled = true;
}
else if (e.KeyCode == Keys.Escape)//esc键盘退出全屏
{
if (m_IsFullScreen)
{
e.Handled = true;
SetFormFullScreen(false);
this.WindowState = FormWindowState.Normal;//还原
this.FormBorderStyle = FormBorderStyle.Sizable;
}
}
}
/// <summary>
/// 设置全屏或这取消全屏
/// </summary>
/// <param name="fullscreen">true:全屏 false:恢复</param>
/// <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>
/// <returns>设置结果</returns>
public Boolean SetFormFullScreen(Boolean fullscreen)//, ref Rectangle rectOld
{
Rectangle rectOld=Rectangle.Empty;
Int32 hwnd = 0;
hwnd = FindWindow("Shell_TrayWnd", null);//获取任务栏的句柄
if (hwnd == 0) return false;
if (fullscreen)//全屏
{
ShowWindow(hwnd, SW_HIDE);//隐藏任务栏
SystemParametersInfo(SPI_GETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);//get屏幕范围
Rectangle rectFull = Screen.PrimaryScreen.Bounds;//全屏范围
SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectFull, SPIF_UPDATEINIFILE);//窗体全屏幕显示
}
else//还原
{
ShowWindow(hwnd, SW_SHOW);//显示任务栏
SystemParametersInfo(SPI_SETWORKAREA, 0, ref rectOld, SPIF_UPDATEINIFILE);//窗体还原
}
return true;
}
#region user32.dll
[DllImport("user32.dll", EntryPoint = "ShowWindow")]
public static extern Int32 ShowWindow(Int32 hwnd, Int32 nCmdShow);
public const Int32 SW_SHOW = 5; public const Int32 SW_HIDE = 0;
[DllImport("user32.dll", EntryPoint = "SystemParametersInfo")]
private static extern Int32 SystemParametersInfo(Int32 uAction, Int32 uParam, ref Rectangle lpvParam, Int32 fuWinIni);
public const Int32 SPIF_UPDATEINIFILE = 0x1;
public const Int32 SPI_SETWORKAREA = 47;
public const Int32 SPI_GETWORKAREA = 48;
[DllImport("user32.dll", EntryPoint = "FindWindow")]
private static extern Int32 FindWindow(string lpClassName, string lpWindowName);
#endregion
}
