how can I open an LabView executable when a double-click on a file?

[Jim_Kring]

Jean-Pierre,

Attached is a DDE client VI that I have created to tell the LabVIEW DDE server to open a file. Creating a DDE server to handle shell reqests should be just as straight-forward. One would need to set the following Registry Keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\<.YourFileExtension> =

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\\shell\open = &Open

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\\shell\open\ddeexec\application =

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\\shell\open\ddeexec = open(%1)

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\\shell\open\command = "" "%1"

When th
e app starts up it could use the command-line arguments, and when it is running it could use DDE.

-Jim

[Jim_Kring]

Jean-Pierre,

[Re: DDE]
Is it possible to write a CIN or DLL to implement the "DDE Server Execute" feature? Is there anyway to get NI add this?

[Re: Hosting your article]
Yes, I will host it for you.

-Jim

[Jim_Kring]

I sent this before your reply to my earlier post.

[Jim_Kring]

Jean-Pierre,

I found this link on MSDN for creating a DDE Server and registering/executing commands:

http://msdn.microsoft.com/library/en-us/dndynex/html/msdn_ddeserv.asp?frame=true

Now all I need is a C compiler 😐

-Jim

[Jim_Kring]

Jean-Pierre,

I have posted the article to:

OpenG.org >> Site Docs >> LabVIEW Articles: Guidelines to File Association and LabVIEW

http://www.openg.org/docs/guidelin.htm

-Jim

[JeanPierre]

Jim,
I have taken a look at this document when doing my research for file extension but frankly I was scared! It is huge and I have never programmed C in a Windows environment.

Maybe posting the question to CVI forum migth give some clues of how to implement such a server...

[JeanPierre]

Thanks Jim.

Here is the companion example code. Change the link in the HTML document. That example is more convenient than peeking in OGPI or OGAB packages.

[Jim_Kring]

It has been posted.

[Jim_Kring]

Or perhaps a posting to OGPM-Developers list 😉

[mikeporter]

Another solution to this problem is to have a small "stub" application that only serves to catch the command-line call from the Explorer and pass the file name to the main application (launching it first if necessary).

Mike...