Subject:
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Re: LPub
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Newsgroups:
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lugnet.cad
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Date:
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Sat, 21 May 2005 17:02:17 GMT
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Viewed:
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3257 times
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In lugnet.cad, Travis Cobbs wrote:
> In lugnet.cad, Kevin L. Clague wrote:
<snip>
> > I just tested LDView and ldglite on windows 98. ldglite worked just fine.
> >
> > LDView does not work well. In both cases I create a batch file with all the
> > things needed, and then do a CreateProcess in which to run them (using $COMSPEC
> > /C ldview.bat > ldview.out).
> >
> > What happens is that LPub sees LDView as finished, before LDView actually
> > finishes. LPub does not find the rendered image, and barfs. When I examine the
> > Images directory (in computer time *much much* later) the image exists.
> >
> > Does anyone have any ideas?
>
> I'm not sure off-hand, but I believe that LDView behaves differently from
> ldglite since it doesn't have a console. If you run LDView from the command
> line, LDView launches, and the command line immediately gets control back, even
> though LDView is still running. If you run LDView with command line arguments
> to generate an image, the same thing happens. I'm not sure what happens if you
> put LDView in a batch file (whether the batch file continues to run before
> LDView exits).
>
> Note that I think all this behavior is directly related to the fact that LDView
> isn't a console application. Does ldglite show a console when you run it? (I
> seem to remember that it does.)
>
> If LDView's non-consoleness is the problem, it should be fairly straightforward
> to create a small launcher console app that runs LDView with the given command
> line, and then waits for LDView to exit using Windows Process Control API calls.
Hi Travis,
I used to do a CreateProcess on LDView (rather than the batch file) with the
same parameters as I provide in the batch file, and I get blank images.
This is why I reverted to a bach file. Here is the code that I use:
STARTUPINFO startupInfo;
PROCESS_INFORMATION procInfo;
startupInfo.cb = sizeof (STARTUPINFO) ;
startupInfo.lpReserved = 0 ;
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 = STARTF_USESHOWWINDOW;
startupInfo.wShowWindow = SW_MINIMIZE;
startupInfo.cbReserved2 = 0 ;
startupInfo.lpReserved2 = 0 ;
// Create full path name of LDView
AnsiString exec =
renderer_paths->Strings[renderer_index] +
"\\" +
renderer_execs->Strings[renderer_index];
// cmd string is all the parameters passed to LDView.
if (CreateProcess(exec.c_str(),
cmd,
NULL,
NULL,
FALSE,
0,
NULL,
cwd.c_str(),
&startupInfo,
&procInfo) == FALSE) {
I know very little about this level of Windows, so any help would be greatly
appreciated.
>
> --Travis
Kevin
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Message has 2 Replies:
 | | Re: LPub
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| (...) Don't know if this is significant, but I usually put everything in the second argument, both the .exe name and the parameters. In this way even 16-bit programs can be started (and I think I've read about some program having problems when (...) (21 years ago, 21-May-05, to lugnet.cad)
| | | Re: LPub
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| (...) I commented on CreateProcess in another message. Here I just wanted to say, that explains why the console window keeps showing up in the windows taskbar. That should stop happening if CreateProcess is used to launch LDView. --Travis (21 years ago, 21-May-05, to lugnet.cad)
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Message is in Reply To:
| | Re: LPub
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| (...) I've seen the described problem when I select a file from the recent files list, and then try to render it. Everything works fine if I manually open the file, but it definitely fails if I select it from the recent files list after having (...) (21 years ago, 21-May-05, to lugnet.cad)
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