Visual Basic, determining if a shelled program has ended execution (vb3.0)

determining if a shelled program has ended execution (vb3.0)

Author	Message
Vinh Lu #1 / 9	determining if a shelled program has ended execution (vb3.0) Hello! I'm writing a program that require the results generated by another windows 3.1 application that is called from my program through the SHELL command, BUT I want my program to stop execution and continue when the SHELLED app is done. I want my program to wait and check to see if the shelled app is done executing and then continue with the next line of code. Suggestions are much appreciated, vinh.
Mon, 01 Feb 1999 03:00:00 GMT

A Delcroi #2 / 9	determining if a shelled program has ended execution (vb3.0) Quote: > = > Hello! > = > I'm writing a program that require the results generated by another win= dows > 3.1 application that is called from my program through the SHELL comman= d, > BUT I want my program to stop execution and continue when the SHELLED a= pp > is done. > = > I want my program to wait and check to see if the shelled app is done > executing and then continue with the next line of code. > = > Suggestions are much appreciated, > vinh. Read the KB article : How to Determine When a Shelled Process Has Terminated Article ID: Q96844 -- = Name: Andr=E9 Delcroix
Mon, 01 Feb 1999 03:00:00 GMT

Jens Balchen J #3 / 9	determining if a shelled program has ended execution (vb3.0) Quote: > I'm writing a program that require the results generated by another windows > 3.1 application that is called from my program through the SHELL command, > BUT I want my program to stop execution and continue when the SHELLED app > is done. You should goto the Knowledge Base pages (see below) and do a little search for something like "shell wait finish" -- VB Info: http://www.sn.no/~balchen/vb/visual.htm FAQ: http://www.sn.no/~balchen/vb/faq.htm Knowledge Base: http://www.sn.no/~balchen/vb/kb.htm
Mon, 01 Feb 1999 03:00:00 GMT

Joe Fost #4 / 9	determining if a shelled program has ended execution (vb3.0) : Hello! : I'm writing a program that require the results generated by another windows : 3.1 application that is called from my program through the SHELL command, : BUT I want my program to stop execution and continue when the SHELLED app : is done. : I want my program to wait and check to see if the shelled app is done : executing and then continue with the next line of code. : Suggestions are much appreciated, : vinh. Search <http://www.microsoft.com/kb> for GetModuleUsage. -- WARNING: I cannot be held responsible for the above They're coming to because my cats have apparently learned to type. take me away, ha ha!
Mon, 01 Feb 1999 03:00:00 GMT

Saul G. Be #5 / 9	determining if a shelled program has ended execution (vb3.0) Quote: >> I'm writing a program that require the results generated by another windows >> 3.1 application that is called from my program through the SHELL command, >> BUT I want my program to stop execution and continue when the SHELLED app >> is done. >You should goto the Knowledge Base pages (see below) and do a little search >for something like "shell wait finish" I've got the stuff from the knowledge base: Use a function called GetModuleUsage: Declare Function GetModuleUsage% Lib "Kernel" (ByVal hModule%) and use it like this: h=shell("MYPROG.EXE") while GetModuleUsage(h)>0 DoEvents wend Regards, Saul ___________________________________________ Saul G. Behr Analyst Programmer Software Engineer Geek Concert Pianist Card Sharp Master of the Mystical Arts Defeater of the Saxons King over all England Allright officer I'll come quietly
Sat, 06 Feb 1999 03:00:00 GMT

INTECS INTL. In #6 / 9	determining if a shelled program has ended execution (vb3.0) : I've got the stuff from the knowledge base: : : Use a function called GetModuleUsage: : Declare Function GetModuleUsage% Lib "Kernel" (ByVal hModule%) : : and use it like this: : h=shell("MYPROG.EXE") : while GetModuleUsage(h)>0 : DoEvents : wend I have a Shell command problem in a VB4 application running under NT: x = shell("command.com /c mycmd < myinput >myoutput", 0) open myoutput for input as 1 ' I want to read the content of myoutput and write it to a textbox It turned out that the content of the previous version of myoutput was shown instead of the one from the latest run of that shell command. It seemed that the I/O redirection will not be completed until the VB application is terminated. So I force the VB code to wait for the completion of Shell as illustrated by Mr. Behr. But the de{filter} stopped at his While statement. Is there anything wrong with his code? How may I force the completeion of I/O redirection in Shell before I open it to read? Jim Kung Norfolk State University
Sun, 07 Feb 1999 03:00:00 GMT

Scott Manso #7 / 9	determining if a shelled program has ended execution (vb3.0) Quote: > : I've got the stuff from the knowledge base: > : > : Use a function called GetModuleUsage: > : Declare Function GetModuleUsage% Lib "Kernel" (ByVal hModule%) > : > : and use it like this: > : h=shell("MYPROG.EXE") >. : while GetModuleUsage(h)>0 >. : DoEvents > : wend The GetModuleUsage is a 16 BIT API call!!!! Your environment is running 32 bit code? Any questions? Quote: > I have a Shell command problem in a VB4 application running under NT: > x = shell("command.com /c mycmd < myinput >myoutput", 0) > open myoutput for input as 1 > ' I want to read the content of myoutput and write it to a textbox > It turned out that the content of the previous version of myoutput was shown > instead of the one from the latest run of that shell command. It seemed > that the I/O redirection will not be completed until the VB application is > terminated. How about "killing" the shelled process which should flush I/O buffers. Another idea might be to use a "memory mapped" file to do your I/O. It would have some speed advantages as your reading/writing RAM instead of SLOW disks. I think there was some code examples in a recent VB Prog.Journal last 3-4 months. I don't have my copies handy. Quote: > So I force the VB code to wait for the completion of Shell as illustrated by > Mr. Behr. But the de{filter} stopped at his While statement. Is there > anything wrong with his code? I have ran into problems Debugging 32 bit code in the Borland environment also the Breakpoints that I set in the De{filter} never get reached or so it seemed, all I had to do was task switch to the de{filter} and the program was stopped right where I set the breakpoint. I think this is because in 32 bit processes the address space of all processes are shall we say "private". Quote: > How may I force the completeion of I/O redirection in Shell before I open it > to read? > Jim Kung > Norfolk State University ___________________________________________ If Pro is the opposite of Con. What is the opposite of Progress?
Sun, 07 Feb 1999 03:00:00 GMT

JBalco #8 / 9	determining if a shelled program has ended execution (vb3.0) There is a book called "Visual Basic Programmer's Guide to the WIN32 API" by Daniel Appleman which comes with a CD with that very same situation on it. I would suggest purchasing the book, its $50 but its 1500 pages of info as well as the whole book on a cd format with samples too. The sample that I found was in chapter 14's samples and is called Launch.vbp, basically you have to write a big involved sub using the results of your shell command. The text from the example is also in the book so you could go to the bookstore and look at it there. Quote: > : Hello! > : I'm writing a program that require the results generated by another windows > : 3.1 application that is called from my program through the SHELL command, > : BUT I want my program to stop execution and continue when the SHELLED app > : is done. > : I want my program to wait and check to see if the shelled app is done > : executing and then continue with the next line of code.
Tue, 09 Feb 1999 03:00:00 GMT

Joe Fost #9 / 9	determining if a shelled program has ended execution (vb3.0) Quote: > There is a book called "Visual Basic Programmer's Guide to the WIN32 API" > by Daniel Appleman which comes with a CD with that very same situation on > it. I would suggest purchasing the book, its $50 but its 1500 pages of > info as well as the whole book on a cd format with samples too. The sample > that I found was in chapter 14's samples and is called Launch.vbp, > basically you have to write a big involved sub using the results of your > shell command. The text from the example is also in the book so you could > go to the bookstore and look at it there. There's a KB article dealing with the 32-bit case as well. I think it involves the WaitForSingleObject API. However, the original question did specify VB 3.0 running on Windows 3.1, which does support the GetModuleUsage API. [snip] -- WARNING: I cannot be held responsible for the above They're coming to because my cats have apparently learned to type. take me away, ha ha!
Wed, 10 Feb 1999 03:00:00 GMT

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