BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Using ShellExecute          BorlandTalk.com Forum Index -> Delphi Non-Technical View previous topic :: View next topic   Author Message Tom Backer Johnsen Guest Posted: Fri Jun 02, 2006 8:15 am    Post subject: Using ShellExecute I am using ShellExecute to start a batch program, where the call on the program contains filenames for the input (a set of commands) and the output file. After the call, I want to process the output file. Evidently, my program (written in D7) goes on with its own operations without waiting for anything, with the result that the output file is empty right after the call on ShellExecute. The operations in the batch program may vary in respect to time, sometimes quite lengthy (actually, it is a statistical system called R, very nice). Now, is there some way of checking if the batch program is finished so I can delay my program until the batch program is finished? Some API call using the handle perhaps? Tom Back to top Pete Fraser Guest Posted: Fri Jun 02, 2006 9:15 am    Post subject: Re: Using ShellExecute "Tom Backer Johnsen" <backer (AT) psych (DOT) uib.no> wrote in message news:447fef7b (AT) newsgroups (DOT) borland.com... Quote: I am using ShellExecute to start a batch program, where the call on the program contains filenames for the input (a set of commands) and the output file. After the call, I want to process the output file. Evidently, my program (written in D7) goes on with its own operations without waiting for anything, with the result that the output file is empty right after the call on ShellExecute. The operations in the batch program may vary in respect to time, sometimes quite lengthy (actually, it is a statistical system called R, very nice). Now, is there some way of checking if the batch program is finished so I can delay my program until the batch program is finished? Some API call using the handle perhaps? This is the C++ way of doing it - you may be able to work out the Delphi way from this... SHELLEXECUTEINFO ExecInfo; memset (&ExecInfo, 0, sizeof(ExecInfo)); ExecInfo.cbSize = sizeof(ExecInfo); ExecInfo.lpVerb = "open"; ExecInfo.lpFile = AppPath.c_str(); ExecInfo.lpParameters = Cmdline.c_str(); ExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS; ExecInfo.nShow = SW_SHOW; bool RetCode = ShellExecuteEx(&ExecInfo); WaitForSingleObject(ExecInfo.hProcess, INFINITE); // this waits -- HTH Pete ================================= www.frasersoft.net GenHelp: "Making writing help fun" Back to top Tom Backer Johnsen Guest Posted: Fri Jun 02, 2006 10:15 am    Post subject: Re: Using ShellExecute Pete Fraser wrote: Quote: "Tom Backer Johnsen" <backer (AT) psych (DOT) uib.no> wrote in message news:447fef7b (AT) newsgroups (DOT) borland.com... I am using ShellExecute to start a batch program, where the call on the program contains filenames for the input (a set of commands) and the output file. After the call, I want to process the output file. Evidently, my program (written in D7) goes on with its own operations without waiting for anything, with the result that the output file is empty right after the call on ShellExecute. The operations in the batch program may vary in respect to time, sometimes quite lengthy (actually, it is a statistical system called R, very nice). Thanks for the tip. With the example I found the corresponding Object Pascal code on the net: http://www.latiumsoftware.com/en/pascal/delphi-1.php (Towards the end) Now, the next step is to get it working. Tom Back to top Tom Backer Johnsen Guest Posted: Fri Jun 02, 2006 11:15 am    Post subject: Re: Using ShellExecute Tom Backer Johnsen wrote: .... Quote: Thanks for the tip. With the example I found the corresponding Object Pascal code on the net: http://www.latiumsoftware.com/en/pascal/delphi-1.php (Towards the end) Now, the next step is to get it working. Yes, it works. However, since the batch program is a DOS type program, a command prompt window flashes up while it is working, which I really do not like. With ShellExecute I could at least hide it by setting the last argument to zero. How do I manage that with CreateProcess? Tom Back to top Jesper Hogstrom (Borland) Guest Posted: Fri Jun 02, 2006 1:15 pm    Post subject: Re: Using ShellExecute Tom Backer Johnsen wrote: Quote: With ShellExecute I could at least hide it by setting the last argument to zero. How do I manage that with CreateProcess? Iirc you change the value in nShow: ExecInfo.nShow = SW_SHOW; to something different. Try 0. Or google for the correct define. Or grep the rtl code for SW_SHOW and see what constant in the 'hood makes most sense. --Jesper Back to top Tom Backer Johnsen Guest Posted: Fri Jun 02, 2006 1:16 pm    Post subject: Re: Using ShellExecute Jesper Hogstrom (Borland) wrote: Quote: Tom Backer Johnsen wrote: With ShellExecute I could at least hide it by setting the last argument to zero. How do I manage that with CreateProcess? Iirc you change the value in nShow: ExecInfo.nShow = SW_SHOW; to something different. Try 0. Or google for the correct define. Or grep the rtl code for SW_SHOW and see what constant in the 'hood makes most sense. Thanks. I thought I had done just that, looking at the various attributes og things. But a Google search turned up: Startinfo.dwFlags := STARTF_USESHOWWINDOW or STARTF_USESTDHANDLES; Startinfo.wShowWindow := SW_HIDE; I had tried changing wShowWindow with no effect. Adding the other line did the trick. Why, I do not know. But it works. Tom Quote: --Jesper Back to top K. Sallee Guest Posted: Fri Jun 02, 2006 2:15 pm    Post subject: Re: Using ShellExecute Quote: (actually, it is a statistical system called R, very nice). I have not tried it myself, or know if it is still being developed, but there is a DCOM R server you might try to access R more directly: http://cran.r-project.org/contrib/extra/dcom/RSrv135.html This is not what you need, but if you ever wish to you can now write an R extension using Delphi : http://www.mail-archive.com/r-devel@r-project.org/msg03691.html Kevin Back to top Tom Backer Johnsen Guest Posted: Sat Jun 03, 2006 8:11 am    Post subject: Re: Using ShellExecute K. Sallee wrote: .... Quote: http://www.mail-archive.com/r-devel@r-project.org/msg03691.html That was a really "nice to know" thing. Thanks! Tom Back to top Tom Backer Johnsen Guest Posted: Sat Jun 03, 2006 8:11 am    Post subject: Re: Using ShellExecute K. Sallee wrote: Quote: (actually, it is a statistical system called R, very nice). I have not tried it myself, or know if it is still being developed, but there is a DCOM R server you might try to access R more directly: http://cran.r-project.org/contrib/extra/dcom/RSrv135.html This is not what you need, but if you ever wish to you can now write an R extension using Delphi : That is correct, what I want to do at the moment is to use R to analyse data I have around in other formats and somewhat odd data structures with my own programs in control. So what I do is simply to write the data to a text file, write the necessary commands to another, start the batch version of R and collect the output. As a result, all the results (from both R and non-R functions) are kept together and can be reproduced any any time, with variations. That is the objective. So, writing extensions is not of primary concern at the moment. However, making a "package" would be useful, but that is a different matter altogether. Quote: http://www.mail-archive.com/r-devel@r-project.org/msg03691.html Kevin Back to top Tom Backer Johnsen Guest Posted: Sat Jun 03, 2006 8:11 am    Post subject: Re: Using ShellExecute Marc Rohloff [TeamB] wrote: Quote: On Fri, 02 Jun 2006 11:31:59 +0200, Tom Backer Johnsen wrote: http://www.latiumsoftware.com/en/pascal/delphi-1.php (Towards the end) Now, the next step is to get it working. You may want to look at the StartupInfo. There are members which let you read the standard output directly without using a temporary file. Thanks for the tip. Tom Back to top Chris Burrows Guest Posted: Sat Jun 03, 2006 8:11 am    Post subject: Re: Using ShellExecute "Tom Backer Johnsen" <backer (AT) psych (DOT) uib.no> wrote in message news:44811e53 (AT) newsgroups (DOT) borland.com... Quote: Marc Rohloff [TeamB] wrote: On Fri, 02 Jun 2006 11:31:59 +0200, Tom Backer Johnsen wrote: http://www.latiumsoftware.com/en/pascal/delphi-1.php (Towards the end) Now, the next step is to get it working. You may want to look at the StartupInfo. There are members which let you read the standard output directly without using a temporary file. Thanks for the tip. There's an example of how to to this at: http://delphi.about.com/cs/adptips2001/a/bltip0201_2.htm It also shows you how you can periodically call ProcessMessages while waiting for confirmation that your program has finished .e.g check every 100ms: repeat Apprunning := WaitForSingleObject (ProcessInfo.hProcess,100) ; Application.ProcessMessages; until (Apprunning <> WAIT_TIMEOUT) ; -- Chris Burrows CFB Software http://www.cfbsoftware.com/gpcp Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Non-Technical 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.