C#应用程序中如何实现全屏幕显示功能? 效果就像windows自带的屏幕保护程序和众多的游戏那样,无论是否设置了“将任务栏保持在其他窗口的前端”都不显示任务栏
实现方式一
在网上找来一些简单的实现方式:
this.FormBorderStyle = FormBorderStyle.None; //设置窗体为无边框样式
this.WindowState = FormWindowState.Maximized; //最大化窗体
或者
this.TopMost= True; //设置窗体为最前端显示
this.WindowState = FormWindowState.Maximized; //最大化窗体
把以上两句代码直接放到Form1_Load的方法中,就可以了,比较简单,我就不贴代码了。
参考出处:http://blog.csdn.net/friendan/article/details/7350570
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实现方式二
调用系统的API函数,如user32.dll中的FindWindow和ShowWindow函数,具体代码如下:
[DllImport("user32.dll", EntryPoint = "ShowWindow")]
public static extern Int32 ShowWindow(Int32 hwnd, Int32 nCmdShow);
[DllImport("user32.dll", EntryPoint = "FindWindow")]
private static extern Int32 FindWindow(string lpClassName, string lpWindowName);
代码如下:
using System;
using System.Windows.Forms;
using System.Drawing;
using System.Runtime.InteropServices;
namespace FullScr
{
public partial class Form1 : Form
{
Boolean m_IsFullScreen = false;//标记是否全屏
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
///
/// 全屏按钮的Click事件
///
///
///
private void button1_Click(object sender, EventArgs e)
{
m_IsFullScreen = !m_IsFullScreen;//点一次全屏,再点还原。
this.SuspendLayout();
if (m_IsFullScreen)//全屏 ,按特定的顺序执行
{
SetFormFullScreen(m_IsFullScreen);
this.FormBorderStyle = FormBorderStyle.None;
this.WindowState = FormWindowState.Maximized;
this.Activate();//
}
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
{
this.WindowState = FormWindowState.Normal;
this.FormBorderStyle = FormBorderStyle.Sizable;
SetFormFullScreen(m_IsFullScreen);
this.Activate();
}
this.ResumeLayout(false);
}
///
/// 设置全屏或这取消全屏
///
/// true:全屏 false:恢复
/// 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
/// 设置结果
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
public const Int32 SPIF_UPDATEINIFILE = 0x1;
public const Int32 SPI_SETWORKAREA = 47;
public const Int32 SPI_GETWORKAREA = 48;
public const Int32 SW_SHOW = 5;
public const Int32 SW_HIDE = 0;
[DllImport("user32.dll", EntryPoint = "ShowWindow")]
public static extern Int32 ShowWindow(Int32 hwnd, Int32 nCmdShow);
[DllImport("user32.dll", EntryPoint = "FindWindow")]
private static extern Int32 FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll", EntryPoint = "SystemParametersInfo")]
private static extern Int32 SystemParametersInfo(Int32 uAction, Int32 uParam, ref Rectangle lpvParam, Int32 fuWinIni);
#endregion
}
}
实现方式三
窗体最大化,不占用任务栏,具体实现如下:
this.MaximizedBounds = Screen.PrimaryScreen.WorkingArea; //设置最大化的大小为工作区域
this.WindowState = FormWindowState.Maximized;
参考出处:
http://www.cnblogs.com/ArcScofield/archive/2013/01/02/Form_Fullscreen.html
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