Re: g_spawn*() on windows

[jcupitt gmail com]

On 3 July 2014 15:26, Allin Cottrell <cottrell wfu edu> wrote:
> On Thu, 3 Jul 2014, Michael Cronenworth wrote:
> > On 07/03/2014 08:33 AM, jcupitt gmail com wrote:
> > > Yes, I'm doing that. It all works and I can capture stdout and stderr
> > > from the convert.exe I'm running, it's just that I get a very annoying
> > > command window flash on the screen each time.
> > >
> > > If anyone has any ideas about the command window, I'm all ears:-(
> >
> > I don't have ImageMagick binaries to check myself, but are they compiled
> > as Windows apps or console apps? Console apps will always force a command
> > prompt window to open. This is not a by-product of a g_spawn call.
>
> Within the win32 API there's a way to suppress the appearance of the console
> in such a situation (by passing the flag CREATE_NO_WINDOW to the function
> CreateProcess). I don't know offhand if the gspawn API exposes this option.

g_spawn_helper uses _wspawnv() to launch the .exe which unfortunately
does not have this option. I think g_spawn_helper might need reworking
to use CreateProcess or similar.

I could have a go at a patch, though I don't know much about win32 and
I'd probably make a hash of it :(

John