BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  restart application from within the application?          BorlandTalk.com Forum Index -> C++ Builder (Language C++) View previous topic :: View next topic   Author Message Hartmut Kloppert Guest Posted: Sat Dec 16, 2006 2:32 am    Post subject: restart application from within the application? I'm using BCB4. For some reason when a user has done some configuration changes I need to restart the application. Instead of asking the user to terminate and restart, is there a way to have it done automatically? Thanks, Harry Back to top Bob Guest Posted: Sat Dec 16, 2006 4:05 am    Post subject: Re: restart application from within the application? Hartmut Kloppert wrote: Quote: I'm using BCB4. For some reason when a user has done some configuration changes I need to restart the application. Instead of asking the user to terminate and restart, is there a way to have it done automatically? Thanks, Harry Launch another program which waits for your original to exit, then launches a copy of your original, before terminating itself. Back to top Clayton Arends Guest Posted: Sat Dec 16, 2006 4:21 am    Post subject: Re: restart application from within the application? Another approach is to design your application so that configuration changes don't require a restart. If you have a lot of registry/ini configuration items then re-read them or read them on-the-fly as needed. Do you have an example of some item in your app that would absolutely require a restart? - Clayton Back to top Hartmut Kloppert Guest Posted: Sat Dec 16, 2006 5:47 am    Post subject: Re: restart application from within the application? You are absolutely right. A "clean" written application should be able to do that. But what I have now is a complex thing and it crashes at different places when I just restart it.... I tried to make it "cleaner" but am looking for a "cheap" way to restart the whole thing from scratch. "Clayton Arends" <nospam_claytonarends (AT) hotmail (DOT) com> wrote in message news:45831fa4$1 (AT) newsgroups (DOT) borland.com... Quote: Another approach is to design your application so that configuration changes don't require a restart. If you have a lot of registry/ini configuration items then re-read them or read them on-the-fly as needed. Do you have an example of some item in your app that would absolutely require a restart? - Clayton Back to top Hartmut Kloppert Guest Posted: Sat Dec 16, 2006 6:34 am    Post subject: Re: restart application from within the application? Hi Bob, how would you code a (master)programm that waits for another to exit and how to start a program from within the (master)programm? "Bob" <nospam (AT) does (DOT) not.exist> wrote in message news:45831c2b$1 (AT) newsgroups (DOT) borland.com... Quote: Hartmut Kloppert wrote: I'm using BCB4. For some reason when a user has done some configuration changes I need to restart the application. Instead of asking the user to terminate and restart, is there a way to have it done automatically? Thanks, Harry Launch another program which waits for your original to exit, then launches a copy of your original, before terminating itself. Back to top Bob Gonder Guest Posted: Sat Dec 16, 2006 9:10 am    Post subject: Re: restart application from within the application? Hartmut Kloppert wrote: Quote: You are absolutely right. A "clean" written application should be able to do that. But what I have now is a complex thing and it crashes at different places when I just restart it.... I tried to make it "cleaner" but am looking for a "cheap" way to restart the whole thing from scratch. Is there something wrong with ShellExecute( 0, "open", argv[0], 0, 0, SW_SHOWNORMAL); exit();//equivelent for your app type Or some varient thereof? Back to top Bob Guest Posted: Sat Dec 16, 2006 7:00 pm    Post subject: Re: restart application from within the application? Hartmut Kloppert wrote: Quote: Hi Bob, how would you code a (master)programm that waits for another to exit and how to start a program from within the (master)programm? "Bob" <nospam (AT) does (DOT) not.exist> wrote in message news:45831c2b$1 (AT) newsgroups (DOT) borland.com... Hartmut Kloppert wrote: I'm using BCB4. For some reason when a user has done some configuration changes I need >> to restart the application. Instead of asking the user to terminate >> and restart, is there a way to have it done automatically? Thanks, Harry Launch another program which waits for your original to exit, then launches a copy of your original, before terminating itself. The waiting for your program to exit part depends on how your original program works. Some options include; 1) A loop calling FindWindow() or FindWindowEx() until that function returns NULL. Of course, you need some knowledge of your original application (information on the windows class name and/or title) to do that. 2) Your original program open a file and never close it: that effectively keeps the file locked until the original program exits. Then all your restarter program needs to do is loop until it successfully opens that file. No need to write anything to the file; only things to watch are ensuring the file is properly cleaned up by both programs. For restarting your original application, a call to something like CreateProcess() or ShellExecute() will be fine. Of course, all of this assumes your original application knows it needs to restart, and doesn't otherwise terminate abnormally (in which case it wouldn't launch the restarter, and therefore would not be restarted). Back to top yod Guest Posted: Mon Dec 18, 2006 10:09 pm    Post subject: Re: restart application from within the application? Bob wrote: Quote: Hartmut Kloppert wrote: Hi Bob, how would you code a (master)programm that waits for another to exit and how to start a program from within the (master)programm? "Bob" <nospam (AT) does (DOT) not.exist> wrote in message news:45831c2b$1 (AT) newsgroups (DOT) borland.com... Hartmut Kloppert wrote: I'm using BCB4. For some reason when a user has done some configuration changes I need >> to restart the application. Instead of asking the user to terminate >> and restart, is there a way to have it done automatically? Thanks, Harry Launch another program which waits for your original to exit, then launches a copy of your original, before terminating itself. The waiting for your program to exit part depends on how your original program works. Some options include; 1) A loop calling FindWindow() or FindWindowEx() until that function returns NULL. Of course, you need some knowledge of your original application (information on the windows class name and/or title) to do that. 2) Your original program open a file and never close it: that effectively keeps the file locked until the original program exits. Then all your restarter program needs to do is loop until it successfully opens that file. No need to write anything to the file; only things to watch are ensuring the file is properly cleaned up by both programs. For restarting your original application, a call to something like CreateProcess() or ShellExecute() will be fine. Of course, all of this assumes your original application knows it needs to restart, and doesn't otherwise terminate abnormally (in which case it wouldn't launch the restarter, and therefore would not be restarted). Back to top yod Guest Posted: Mon Dec 18, 2006 10:29 pm    Post subject: Re: restart application from within the application? My code didn't show in the last reply. Let me try again... // This funtion does the restart using CreateProcess. HANDLE MAIN_RestartApp(LPSTR szAppName) { STARTUPINFO StartupInfo; PROCESS_INFORMATION ProcessInformation; StartupInfo.cb = sizeof(STARTUPINFO); StartupInfo.lpReserved = NULL; StartupInfo.lpDesktop = NULL; StartupInfo.lpTitle = NULL; StartupInfo.dwX = 0; StartupInfo.dwY = 0; StartupInfo.dwXSize = 0; StartupInfo.dwYSize = 0; StartupInfo.dwXCountChars = 0; StartupInfo.dwYCountChars = 0; StartupInfo.dwFillAttribute = 0; StartupInfo.dwFlags = 0; StartupInfo.wShowWindow = 0; StartupInfo.cbReserved2 = 0; StartupInfo.lpReserved2 = NULL; StartupInfo.hStdInput = 0; StartupInfo.hStdOutput = 0; StartupInfo.hStdError = 0; if(CreateProcess( NULL, // pointer to name of executable module szAppName, // pointer to command line string NULL, // pointer to process security attributes NULL, // pointer to thread security attributes FALSE, // handle inheritance flag NORMAL_PRIORITY_CLASS, // CREATE_DEFAULT_ERROR_MODE, // creation flags NULL, // pointer to new environment block NULL, // pointer to current directory name &StartupInfo, // pointer to STARTUPINFO &ProcessInformation)) // pointer to PROCESS_INFORMATION return (ProcessInformation.hProcess); return NULL; } // This function supplys the app name void MAIN_DoRestart( void) { char szAppName[MAX_PATH]; GetModuleFileName( NULL, szAppName, sizeof( szAppName)); Log( D_FUNC, "Restarting Application %s", szAppName); for (; // Retry until PostMessage works. It may fail because the queue is full { // Use PostMessage because we don't want to wait if (PostMessage( ghWnd, WM_COMMAND, IDCANCEL, 0)) break; } MAIN_RestartApp( szAppName); } } Regards, yod Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> C++ Builder (Language C++) All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.