Bug 164181. Prevent multiple instances of CASAManager on windows.
This commit is contained in:
Jim Norman
parent
feb8a323af
commit
1b5e320313
@ -1,3 +1,7 @@
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--------------------------------------------------------------------
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Mon Jul 03 13:01:53 MST 2006 - jnorman@novell.com
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- Bug 164181. Prevent multiple instances of CASAManager on windows.
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--------------------------------------------------------------------
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Tue Jun 27 14:22:53 MST 2006 - jnorman@novell.com
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- Added miCASARemoveKey API to dll.
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@ -104,40 +104,40 @@
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Project = "{E21DD887-22F4-4935-9851-409715F663B0}"
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Package = "{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"
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/>
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<Reference
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Name = "Novell.CASA.CASAPolicy"
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Project = "{636A9D7E-BFB5-4EB9-96F8-51FF85A98826}"
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Package = "{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"
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/>
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<Reference
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Name = "glib-sharp"
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AssemblyName = "glib-sharp"
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HintPath = "..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp-2.0\glib-sharp.dll"
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/>
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<Reference
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Name = "gtk-sharp"
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AssemblyName = "gtk-sharp"
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HintPath = "..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp-2.0\gtk-sharp.dll"
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/>
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<Reference
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Name = "pango-sharp"
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AssemblyName = "pango-sharp"
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HintPath = "..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp-2.0\pango-sharp.dll"
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HintPath = "..\..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp\pango-sharp.dll"
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/>
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<Reference
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Name = "atk-sharp"
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AssemblyName = "atk-sharp"
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HintPath = "..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp-2.0\atk-sharp.dll"
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HintPath = "..\..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp\atk-sharp.dll"
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/>
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<Reference
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Name = "gdk-sharp"
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AssemblyName = "gdk-sharp"
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HintPath = "..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp-2.0\gdk-sharp.dll"
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HintPath = "..\..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp\gdk-sharp.dll"
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/>
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<Reference
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Name = "glade-sharp"
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AssemblyName = "glade-sharp"
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HintPath = "..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp-2.0\glade-sharp.dll"
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HintPath = "..\..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp\glade-sharp.dll"
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/>
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<Reference
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Name = "glib-sharp"
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AssemblyName = "glib-sharp"
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HintPath = "..\..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp\glib-sharp.dll"
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/>
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<Reference
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Name = "gtk-sharp"
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AssemblyName = "gtk-sharp"
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HintPath = "..\..\..\..\..\..\GtkRun\2.8\lib\gtk-sharp\gtk-sharp.dll"
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/>
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<Reference
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Name = "Novell.CASA.CASAPolicy"
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Project = "{636A9D7E-BFB5-4EB9-96F8-51FF85A98826}"
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Package = "{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}"
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/>
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</References>
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</Build>
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@ -198,6 +198,11 @@
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SubType = "Code"
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BuildAction = "Compile"
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/>
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<File
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RelPath = "SingleApplication.cs"
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SubType = "Code"
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BuildAction = "Compile"
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/>
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<File
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RelPath = "Store.cs"
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SubType = "Code"
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@ -1,7 +1,7 @@
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<VisualStudioProject>
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<CSHARP LastOpenVersion = "7.10.3077" >
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<Build>
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<Settings ReferencePath = "C:\GtkRun\2.8\lib\gtk-sharp-2.0\" >
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<Settings ReferencePath = "D:\casa\extern\w32\gtk-sharp-2.0\;C:\GtkRun\2.8\lib\gtk-sharp\" >
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<Config
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Name = "Debug"
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EnableASPDebugging = "false"
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@ -281,6 +281,10 @@ public class Common
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}
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else if( true == IS_WINDOWS )
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{
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#if W32
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bRet = SingleInstance.SingleApplication.Run();
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#endif
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#if DOTNET2
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Process current = Process.GetCurrentProcess();
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Process[] p = System.Diagnostics.Process.GetProcessesByName("CASAManager");
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137
CASA/gui/SingleApplication.cs
Normal file
137
CASA/gui/SingleApplication.cs
Normal file
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using System;
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using System.Windows.Forms;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Diagnostics;
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using System.Threading;
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using System.Reflection;
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using System.IO;
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namespace SingleInstance
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{
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/// <summary>
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/// Summary description for SingleApp.
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/// </summary>
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public class SingleApplication
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{
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public SingleApplication()
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{
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}
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/// <summary>
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/// Imports
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/// </summary>
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[DllImport("user32.dll")]
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private static extern int ShowWindow(IntPtr hWnd, int nCmdShow);
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[DllImport("user32.dll")]
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private static extern int SetForegroundWindow(IntPtr hWnd);
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[DllImport("user32.dll")]
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private static extern int IsIconic(IntPtr hWnd);
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/// <summary>
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/// GetCurrentInstanceWindowHandle
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/// </summary>
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/// <returns></returns>
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private static IntPtr GetCurrentInstanceWindowHandle()
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{
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IntPtr hWnd = IntPtr.Zero;
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Process process = Process.GetCurrentProcess();
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Process[] processes = Process.GetProcessesByName(process.ProcessName);
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foreach(Process _process in processes)
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{
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// Get the first instance that is not this instance, has the
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// same process name and was started from the same file name
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// and location. Also check that the process has a valid
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// window handle in this session to filter out other user's
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// processes.
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if (_process.Id != process.Id &&
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_process.MainModule.FileName == process.MainModule.FileName &&
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_process.MainWindowHandle != IntPtr.Zero)
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{
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hWnd = _process.MainWindowHandle;
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break;
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}
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}
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Console.WriteLine("Window Handle: " + hWnd.ToString());
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return hWnd;
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}
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/// <summary>
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/// SwitchToCurrentInstance
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/// </summary>
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public static bool SwitchToCurrentInstance()
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{
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IntPtr hWnd = GetCurrentInstanceWindowHandle();
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if (hWnd != IntPtr.Zero)
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{
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// Restore window if minimised. Do not restore if already in
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// normal or maximised window state, since we don't want to
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// change the current state of the window.
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if (IsIconic(hWnd) != 0)
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{
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ShowWindow(hWnd, SW_RESTORE);
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}
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// Set foreground window.
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SetForegroundWindow(hWnd);
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return true;
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}
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else
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return false;
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}
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/// <summary>
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/// Execute a form base application if another instance already running on
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/// the system activate previous one
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/// </summary>
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/// <param name="frmMain">main form</param>
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/// <returns>true if no previous instance is running</returns>
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public static bool Run(System.Windows.Forms.Form frmMain)
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{
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if(IsAlreadyRunning())
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{
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//set focus on previously running app
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SwitchToCurrentInstance();
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return false;
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}
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Application.Run(frmMain);
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return true;
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}
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/// <summary>
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/// for GUI
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/// </summary>
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/// <returns></returns>
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public static bool Run()
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{
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if(IsAlreadyRunning())
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{
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return true;
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}
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return false;
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}
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/// <summary>
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/// check if given exe alread running or not
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/// </summary>
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/// <returns>returns true if already running</returns>
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private static bool IsAlreadyRunning()
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{
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string strLoc = Assembly.GetExecutingAssembly().Location;
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FileSystemInfo fileInfo = new FileInfo(strLoc);
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string sExeName = fileInfo.Name;
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bool bCreatedNew;
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mutex = new Mutex(true, "Global\\"+sExeName, out bCreatedNew);
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if (bCreatedNew)
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mutex.ReleaseMutex();
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return !bCreatedNew;
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}
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static Mutex mutex;
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const int SW_RESTORE = 9;
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}
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}
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