On Mon, 2015-11-23 at 01:03 +0000, Al Thomas wrote: > > From: Matrix <pigex.zh...@gmail.com> > > > Sent: Sunday, 22 November 2015, 8:07 > > Subject: [Vala] help with writting vapi... > > > > i'm writting hiredis vala's binding.. > > > > here is a function like this: > > > > redisContext *redisConnectWithTimeout(const char *ip, int port, > > const > > struct timeval tv); > > > > so, how to tell the valac that the 3rd param is struct value not > > struct > > pointer? > > > > Another useful nugget from the Legacy Bindings document > ( https://wiki.gnome.org/Projects/Vala/LegacyBindings#Structs ): > "Very rarely the struct in a C library is used by passing it as a > value to functions and not a reference > ...[This pattern] should be bound using Vala's SimpleType attribute > to override Vala's default behaviour of passing structs by reference" > So add > [SimpleType] > before your struct in the binding. > > If that works then that section of the document makes > more sense if it is under the 'Binding Parameter Types' > section. I'll add a structs sub-section there and move > that paragraph there if it is helpful for others.
It might help to copy this graphic from the FAQ: https://wiki.gnome.org/Projects/Vala/FAQ#What_does_.5BSimpleType.5D_and _.5BCompact.5D_in_bindings_mean.3F
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