C# 当我双击Winform或Wpf的程序两次时
如果我有一个Winform或Wpf程序,例如a.exe,我双击它,一个窗口显示,我隐藏它,然后再次双击a.exe,我如何使隐藏窗口再次显示 winform(需要1,4和5)和Wpf(需要1,2和3)的摘要: 1.SingleInstanceApplication类 2.对于App.xaml.cs中的Wpf 3.对于MainWindow.xaml.cs中的Wpf 4.对于Program.cs中的Winform 5.对于Form1.cs中的Winform 在Winforms(VB.NET)中,您可以使其成为一个单实例应用程序C# 当我双击Winform或Wpf的程序两次时,c#,wpf,winforms,single-instance,C#,Wpf,Winforms,Single Instance,如果我有一个Winform或Wpf程序,例如a.exe,我双击它,一个窗口显示,我隐藏它,然后再次双击a.exe,我如何使隐藏窗口再次显示 winform(需要1,4和5)和Wpf(需要1,2和3)的摘要: 1.SingleInstanceApplication类 2.对于App.xaml.cs中的Wpf 3.对于MainWindow.xaml.cs中的Wpf 4.对于Program.cs中的Winform 5.对于Form1.cs中的Winform 在Winforms(VB.NET)中,您可以
项目属性>应用程序>制作单实例应用程序
此选项在C#或Visual Studio的快速版中不可用,但是:
因此,这可能很有用:您可以尝试以下方法:
static class Program
{
[DllImport("user32.dll")]
static extern bool SetForegroundWindow(IntPtr hWnd);
[DllImport("user32.dll")]
static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
bool createdNew = true;
using (Mutex mutex = new Mutex(true, "SomeUniqueName", out createdNew))
{
if (createdNew)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MyForm());
}
else
{
Process current = Process.GetCurrentProcess();
foreach (Process process in Process.GetProcessesByName(current.ProcessName))
{
if (process.Id != current.Id)
{
SetForegroundWindow(process.MainWindowHandle);
ShowWindowAsync(process.MainWindowHandle, 9); //9 == SW_RESTORE
break;
}
}
}
}
}
}
静态类程序
{
[DllImport(“user32.dll”)]
静态外部bool setforegroundindow(IntPtr hWnd);
[DllImport(“user32.dll”)]
静态外部bool ShowWindowAsync(IntPtr hWnd、intncmdshow);
///
///应用程序的主要入口点。
///
[状态线程]
静态void Main()
{
bool createdNew=true;
使用(Mutex Mutex=new Mutex(true,“SomeUniqueName”,out createdNew))
{
如果(createdNew)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
运行(新的MyForm());
}
其他的
{
Process current=Process.GetCurrentProcess();
foreach(Process.getProcessByName(current.ProcessName))中的进程
{
if(process.Id!=current.Id)
{
SetForegroundWindow(process.MainWindowHandle);
ShowWindowAsync(process.MainWindowHandle,9);//9==SW\u RESTORE
打破
}
}
}
}
}
}
winform的想法恐怕不正确,在我的专业版VS中,只有“配置”、“平台”、“程序集名称”、“默认名称空间”、“目标框架”、“输出类型”、“仅客户端框架子集”、“启动对象”、“程序集信息”、“资源”,没有“生成单实例应用程序”@PlantainYao不确定您正在查看的内容/位置,该选项位于属性-->应用程序的右上方“关机时保存我的设置”。确保启用应用程序框架是正确的checked@Mark霍尔我刚才犯了一个错误,在C#.Net的VS中没有“生成单实例应用程序”复选框,但在VB.Net的VS中有一个复选框。
protected override void OnStartup(StartupEventArgs e)
{
SingleInstanceAppliction.SetGuid("{8F6F0AC4-B9A1-45fd-A8CF-72F04E6BDE8F}");
if (SingleInstanceAppliction.IsFirst())
{
base.OnStartup(e);
SingleInstanceAppliction.ReleaseMutex();
}
else
{
SingleInstanceAppliction.PostMessage();
Shutdown();
}
}
protected override void OnSourceInitialized(EventArgs e)
{
base.OnSourceInitialized(e);
var source = PresentationSource.FromVisual(this) as HwndSource;
source.AddHook(WndProc);
}
private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (msg == SingleInstanceAppliction.WM_SHOWME)
{
if (WindowState == WindowState.Minimized)
{
WindowState = WindowState.Normal;
}
var top = Topmost;
Topmost = true;
Topmost = top;
}
return IntPtr.Zero;
}
[STAThread]
private static void Main()
{
SingleInstanceAppliction.SetGuid("{8F6F0AC4-B9A1-45fd-A8CF-72F04E6BDE8F}");
if (SingleInstanceAppliction.IsFirst())
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
SingleInstanceAppliction.ReleaseMutex();
}
else
{
SingleInstanceAppliction.PostMessage();
}
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
protected override void WndProc(ref Message m)
{
if (m.Msg == SingleInstanceAppliction.WM_SHOWME)
{
if (WindowState == FormWindowState.Minimized)
{
WindowState = FormWindowState.Normal;
}
var top = TopMost;
TopMost = true;
TopMost = top;
}
base.WndProc(ref m);
}
static class Program
{
[DllImport("user32.dll")]
static extern bool SetForegroundWindow(IntPtr hWnd);
[DllImport("user32.dll")]
static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
bool createdNew = true;
using (Mutex mutex = new Mutex(true, "SomeUniqueName", out createdNew))
{
if (createdNew)
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new MyForm());
}
else
{
Process current = Process.GetCurrentProcess();
foreach (Process process in Process.GetProcessesByName(current.ProcessName))
{
if (process.Id != current.Id)
{
SetForegroundWindow(process.MainWindowHandle);
ShowWindowAsync(process.MainWindowHandle, 9); //9 == SW_RESTORE
break;
}
}
}
}
}
}