Re: Starting .exe: DOS prompt OK, double-click not

["Elfyn McBratney" <elfyn at exposure dot org dot uk>]

> When OurApp.exe starts up, it invokes Tcl/Tk's "wish" shell, and passes
> OurScript.tcl to it for interpretation. (The actual Tcl/Tk installation on
my
> machine is ActiveTcl 8.4., but that's not really important.)

Well that depends. How does your application access the file
"OurScript.tcl"? What I mean is what path do you use? Is it a Cygwin (posix)
path or a Win32 path? What I'm thinking is that you are giving a windows
version of wish a posix path, which it will not be able to understand.

> Now, when I double-click on OurApp.exe in Windows Explorer, I get the
> following error message from wish:
>
> Error in startup script
> couldn't read file "/cygdrive/c/OurAppFolder/OurScript.tcl": no such file
> or directory
>
> But when I open a DOS prompt in OurAppFolder and start OurApp from
> there, then everything's fine. (Notice that it's a plain DOS prompt, not
> Cygwin's bash.)
>
> So my question is: what's the reason for this behavior? To me it seems
> that the C:\OurAppFolder\OurScript.tcl path gets transformed into its
> Cygwin equivalent, and wish doesn't understand the transformed path.
> But why is everything OK from the DOS prompt? And is there a way to
> make the double-click work as expected?

Because wish is a part of the ActiveTCL distribution, and thus a Win32
executable, that won't know what a Cygwin path is or where it points to.


Regards,

Elfyn McBratney
elfyn at exposure dot org dot uk
www.exposure.org.uk



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