Howto Launch a windows application ?

[Yu-Xi Lim]

stef mientki wrote:
> cmd =[]
> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
> cmd.append ( '-long-start' )
> cmd.append ( '-d')
> cmd.append ( '-clear' )
> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
> cmd.append ( 
> 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )

Your problem is probably the last line there with the '>'. That's an 
output redirection that is done not by jalv2_3.exe but by the command 
shell. That's why it works only with the batch file (which is 
interpreted by the command shell.

Using a batch file is probably easiest for this. But I'm guessing you 
probably want to change the command line arguments passed to the program 
that's why you prefer to build the command line manually.

In that case, there are a few solutions:
1) Generate the batch file programmatically.
2) Use cmd.exe /C (assuming you're on Windows XP). So your program would 
be something like:
cmd.append('cmd.exe')
cmd.append('/C')
cmd.append('"D:\\PIC-tools\\JALxxx\\jalv2_3.exe -long-start -d -clear 
-sD:\\PIC-tools\\JAL\\libs2 
d:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal 
 >d:\\data_actueel\\d7_test_browser\\temp.log"')
(or something like that)
3) Do the redirection yourself. Remove the line:
  cmd.append ('>d:\\data_actueel\\d7_test_browser\\temp.log' )
and instead read the results directly from the Popen.stdout. You can 
then write the output to a file if you want.