在开发Windows应用程序时,有时需要将应用设置为全屏模式,以提供更沉浸式的用户体验。在C#中,可以通过调用Windows API来实现这一功能。本文将介绍如何使用C#编程语言实现一个全屏应用程序,包括隐藏任务栏和系统信息面板(SIP),并提供了详细的代码示例和解释。
在开始之前,请确保开发环境已经安装了.NET Framework,并且熟悉C#语言的基本语法。
首先,需要创建一个类来封装全屏相关的操作。这个类将包括调用Windows API的代码,以实现隐藏任务栏和SIP的功能。以下是这个类的实现:
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace myApp
{
class fullScreen
{
// 导入需要的Windows API
[DllImport("coredll.dll")]
private static extern IntPtr FindWindowW(string lpClassName, string lpWindowName);
[DllImport("coredll.dll")]
private static extern int GetSystemMetrics(int nIndex);
private const int SM_CXSCREEN = 0;
private const int SM_CYSCREEN = 1;
[DllImport("coredll.dll")]
static extern bool IsWindowVisible(IntPtr hWnd);
[DllImport("coredll.dll")]
static extern bool ShowWindow(IntPtr hWnd, uint nCmdShow);
// 定义窗口显示样式
private enum WindowShowStyle : uint
{
Hide = 0,
ShowNormal = 1,
ShowMinimized = 2,
ShowMaximized = 3,
Maximize = 3,
ShowNormalNoActivate = 4,
Show = 5,
Minimize = 6,
ShowMinNoActivate = 7,
ShowNoActivate = 8,
Restore = 9,
ShowDefault = 10,
ForceMinimized = 11
}
private int m_width = 240;
private int m_height = 320;
private bool m_SIP_shown = false;
public fullScreen()
{
m_width = GetSystemMetrics(SM_CXSCREEN);
m_height = GetSystemMetrics(SM_CYSCREEN);
IntPtr hWndSipWndClass = IntPtr.Zero;
hWndSipWndClass = FindWindowW("SipWndClass", null);
if (hWndSipWndClass != IntPtr.Zero)
{
m_SIP_shown = IsWindowVisible(hWndSipWndClass);
}
GXopen();
}
private void GXopen()
{
if (System.IO.File.Exists(@"\Windows\gx.dll"))
{
GX_WM gxwm = new GX_WM();
gxwm.GXopen();
}
}
private void GXclose()
{
if (System.IO.File.Exists(@"\Windows\gx.dll"))
{
GX_WM gxwm = new GX_WM();
gxwm.GXopen();
}
}
public int width
{
get { return m_width; }
}
public int height
{
get { return m_height; }
}
public void makeFullScreen(System.Windows.Forms.Form f)
{
f.Width = m_width;
f.Height = m_height;
f.Top = 0; f.Left = 0;
hideTaskBar(true);
showSIP(false);
}
public void Unload()
{
hideTaskBar(false);
if (m_SIP_shown)
showSIP(true);
}
public void showSIP(bool bShow)
{
IntPtr hWndSipWndClass = IntPtr.Zero;
hWndSipWndClass = FindWindowW("SipWndClass", null);
if (hWndSipWndClass != IntPtr.Zero)
{
if (bShow)
ShowWindow(hWndSipWndClass, (uint)WindowShowStyle.ShowNormal);
else
ShowWindow(hWndSipWndClass, (uint)WindowShowStyle.Minimize);
}
}
private int hideTaskBar(bool mode)
{
IntPtr hWndTaskBar = IntPtr.Zero;
if (mode)
{
hWndTaskBar = FindWindowW("HHTaskBar", null);
if (hWndTaskBar != IntPtr.Zero)
ShowWindow(hWndTaskBar, (uint)WindowShowStyle.Hide);
}
else
{
hWndTaskBar = FindWindowW("HHTaskBar", null);
if (hWndTaskBar != IntPtr.Zero)
ShowWindow(hWndTaskBar, (uint)WindowShowStyle.ShowNormal);
}
return 0;
}
}
}
这个类提供了全屏显示窗口、隐藏任务栏和SIP的功能。
在应用程序中,可以在程序的入口点声明一个全屏对象,并在运行时初始化它。以下是如何在Program.cs中使用这个类的示例:
public static fullScreen fse;
[MTAThread]
static void Main()
{
try
{
fse = new fullScreen();
Application.Run(new MyAppForm());
}
catch (Exception ex)
{
MessageBox.Show("Sorry: " + ex.Message);
}
fse.Unload();
}
在每个表单中,可以在表单的构造函数或_Load事件中调用makeFullScreen方法来实现全屏显示:
public myAppForm()
{
if (!InitApp())
AppShutdown();
InitializeComponent();
Program.fse.makeFullScreen(this);
}
如果需要显示SIP,可以使用以下代码:
Program.fse.showSIP(true);