Piping console output from c executable to VB6 textbox

[Yorkshireman2]

I have a VB 6 form with a button which calls a procedure to start an exe in a subdirectory of the VB6 App.
I tried code fro mhere:

http://www.vb-helper.com/howto_capture_console_stdout.html

which "creates a pipe and executes the console application, telling it to send output and error information to the pipe. It then reads from the pipe until there's no output left to read."

It runs my executable ok but my destination text box does not update line by line, as the original console execution does.
The VB form sort of goes partially blank- not refreshing- until the called executable finishes-then the text box fills with all the text from the pipe.
Does anyone know if this all I can get or should it output line by line as the executable prints each line??

 

[strongm]

>should it output line by line as the executable prints each line??

No, afraid not, not as written. It is related to the fact that you are doing a synchronous file read, and also that win32 doesn't do pipes quite like Unix does.

 

[dilettante]

I'm not sure whether this might help some:

ShellPipe "Shell with I/O Redirection" control

It uses Timer-driven polling rather than trying to make overlapped I/O work in VB6 but it is stable enough for many applications.

Of course it can't do much about the differences between Windows and *nix pipes.

 

[Yorkshireman2]

Thanks Dilettante (and Strongm),

I will examine that example and see.

 

[strongm]

Any luck?

 

[Yorkshireman2]

Hi Strngm, I took a first look and ran it as described but I don't yet understand it enough to be able to use the code in my app.
I don't get much time to spend on this app so I must wait until I can really study it.
Once I get the idea I will try to add the parts I need to make my app work.