How to open a file with the system default program?

Hello.
How can I open a file (e.g. test.csv) with the defined system default
program (e.g. MS Excel) depending on its file extension?
If no default program is defined and no "Open with..." dialog will be
displayed, I like to handle this by displaying the file content in a small
ST editor.
Thank you for your help.

Best regards,
Tom Grünewald

Hi Tom,

use (OSSystemSupport concreteClass) CreateProcess: nil arguments: 'cmd /C "your file"'
The file extension must be registered in Windows !

Gruenewald, Tom wrote:

Hello.
How can I open a file (e.g. test.csv) with the defined system default
program (e.g. MS Excel) depending on its file extension?
If no default program is defined and no "Open with..." dialog will be
displayed, I like to handle this by displaying the file content in a small
ST editor.
Thank you for your help.

Best regards,
Tom Grünewald

Load Windows Goodies parcel. and look at the #openFile: method there.

You probably will need to modify it a bit as follows:

openFile: aFilename
       
"self openFile: 'http://www.yahoo.com'"
"self openFile: 'team1.pdf'"

        | xif hwnd |
        xif := self new.
        hwnd := nil.
"the mod"
        Dialog defaultParentWindow
                ifNotNil: [:aWin | hwnd := xif HWND cast: aWin windowHandle].
"/the mod"
        ^xif
                ShellExecute: hwnd
                with: 'open'
                with: aFilename asString
                with: nil
                with: nil
                with: xif SW_SHOWNORMAL

if file has an association you will get a handle to the process.

HTH

--Mark

Gruenewald, Tom wrote:

My mouse was to quick.

Here is additional info for the return values:

Returns
The return value is the instance handle of the application that was
opened or printed, if the function is successful. (This handle could
also be the handle of a DDE server application.) A return value less
than or equal to 32 specifies an error.

if for some reason the command did not succed you can examine the error
codes :

Errors
The ShellExecute() function returns the value 31 if there is no
association for the specified file type or if there is no association
for the specified action within the file type. The other possible error
values are as follows: Value          Meaning
---------------------------------------------------------------------------

    0             System was out of memory, executable file was corrupt, or
                  relocations were invalid.

    2             File was not found.

    3             Path was not found.

    5             Attempt was made to dynamically link to a task, or there
                  was a sharing or network-protection error.

    6             Library required separate data segments for each task.

    8             There was insufficient memory to start the application.

   10             Windows version was incorrect.

   11             Executable file was invalid. Either it was not a Windows
                  application, or there was an error in the .exe image.

   12             Application was designed for a different operating system.

   13             Application was designed for MS-DOS 4.0.

   14             Type of executable file was unknown.

   15             Attempt was made to load a real-mode application
                 (developed for an earlier version of Windows).

   16             Attempt was made to load a second instance of an
                  executable file containing multiple data segments that
                  were not marked read-only.

   19             Attempt was made to load a compressed executable file. The
                  file must be decompressed before it can be loaded.

   20             Dynamic-link library (DLL) file was invalid. One of the
                  DLLs required to run this application was corrupt.

   21             Application requires Microsoft Windows 32-bit extensions.
                               



Mark Pirogovsky wrote: