OpenEuphoria

1. Executing External Programs

• Posted by Urzumph <urzumph at hotpop.com> Oct 13, 2004
• 457 views

Hello all.

I'm trying to call some external programs, but would prefer to do so 
without opening a dos-box. At the moment, my solution is to hide my 
window (I am using wxEuphoria) and then use system_exec() to execute it, 
which doesn't open a dos-box, but it does mean that my program is still 
running in the background, Which I would like to avoid. Is there any way 
about us?

3. Re: Executing External Programs

• Posted by Matt Lewis <matthewwalkerlewis at yahoo.com> Oct 13, 2004
• 467 views

Urzumph wrote:
> 
> Hello all.
> 
> I'm trying to call some external programs, but would prefer to do so 
> without opening a dos-box. At the moment, my solution is to hide my 
> window (I am using wxEuphoria) and then use system_exec() to execute it, 
> which doesn't open a dos-box, but it does mean that my program is still 
> running in the background, Which I would like to avoid. Is there any way 
> about us?
> 

If you're using wxEuphoria, you can use wxExecute to do what you want.
It's currently not wrapped extremely well (see wx_execute under the
topic Random Functions).  It only allows for asynchronous execution,
though it is easy to change this.

Change this:

global procedure wx_execute( sequence command )
	atom str
	str = create( wxString, {command})
	void = call_cdecl( wxExecute_1, {str, 0, 0})

	cpp:delete_instance(str)
end procedure

to this:

global constant
-- execute the process asynchronously
wxEXEC_ASYNC	= 0,

-- execute it synchronously, i.e. wait until it finishes
wxEXEC_SYNC 	= 1,

-- under Windows, don't hide the child even if it's IO is redirected (this
-- is done by default)
wxEXEC_NOHIDE	= 2,

-- under Unix, if the process is the group leader then killing -pid kills
-- all children as well as pid
wxEXEC_MAKE_GROUP_LEADER = 4

global function wx_execute( sequence command, integer flag )
	atom str
	str = create( wxString, {command})
	void = call_cdecl( wxExecute_1, {str, flag, 0})

	cpp:delete_instance(str)
	return void
end function

Now you can call wx_execute() either synchronously or asynchronously.
This change will be made for v0.3.0 (which I'm hoping to get out in a 
few weeks--if anyone wants a preview/beta, let me know).

Matt Lewis