Re: Run in background (NT)?
- To: mathgroup at smc.vnet.net
- Subject: [mg25524] Re: Run in background (NT)?
- From: "P.J. Hinton" <paulh at wolfram.com>
- Date: Thu, 5 Oct 2000 23:50:44 -0400 (EDT)
- Organization: Wolfram Research, Inc.
- Sender: owner-wri-mathgroup at wolfram.com
Peter Meulbroek <meulbroek at wag.caltech.edu> writes: > What about the old standbyes: > 1) create a shortcut to the app, and request that it startup as a > minimized application (settable under the "properties" of the shortcut). > This works for Run["c:\\temp\\notepad.exe.lnk"] where notepad.exe.lnk is > a shortcut to notepad, set as above. Even in this situation, a console window appears. If you have a fast machine with a good graphics card, you might not see it because it is so brief. > 2) call the program from a vbscript, where you can specify the options > of the call to the executable using the "WshShell.Run" method, > specifying either a minimized or a hidden application. > > What's desired here is to instigate a call to "CreateProcess(Ex)" with > ppropriate flags. If the target application supports the nCmdShow flag > of WinMain, you're golden. The design of Run is intended to be more like the ANSI C function system() rather than the Win32 function CreateProcess(). Under Windows, system() passes its argument to the command interpreter (by default C:\WINNT\system32\CMD.EXE under Windows NT/2000). This results in the console window popping up. Using CreateProcess() in lieu of system() would make it impossible for the user to take advantage of the interpreter's PATH environment variable, so all commands would have to be entered with full paths, or the kernel's working directory would have to be set to the location of the executable before invoking the command. You would also lose features of the command interpreter like output redirection and the ability to run batch files. For your situation, it wouldn't be too hard for you write a simple MathLink program that that takes a list of arguments and passes the arguments to CreateProcess(). To keep the MathLink program from placing an icon on the taskbar, you could hard-code the nCmdShow parameter in the WinMain() MathLink boilerplate to be SW_HIDE. if( !MLInitializeIcon( hinstCurrent, SW_HIDE)) return 1; -- P.J. Hinton User Interface Programmer paulh at wolfram.com Wolfram Research, Inc.