(…and that actually doesn't need to be separate, it just was because it took so long to pin down)
Yes, that should do it. If you want to check what
gtk_message_dialog_new is doing internally, you can check here.
(The reason that
gtk_message_dialog_new is not in the bindings is because it accepts a variable number of arguments, and we don't bind such functions.)
Yes, source diving was how it ended for me (and how I identified the final setTransientFor)
Good to know for the missing binding, I was wondering
Perhaps a stub could be generated in Haddock to explain? I tried looking around for an explanation, but it's hard to know where to look
If you have some ideas about the language please feel free to suggest them in the issue, I am not sure what the right approach is here.
GObject.objectGetData documentation says it returns “the data if found, or
But its signature is * -> MonadIO m => m (Ptr ())
After much head-scratching, I'm guessing it really returns
Nothing if no such data exists”But its signature is * -> MonadIO m => m (Ptr ())
After much head-scratching, I'm guessing it really returns
nullPtr if no data exists?
@tripa:matrix.org Yes, that's right! The
gtk-doc -> haddock translator uses a number of heuristics to improve the Haskell side docs, one of which is replacing NULL by Nothing. This is almost always the right thing to do, since nullable arguments on the C side are mapped to Maybe arguments. But this is indeed wrong for objectGetData.
@dark-ether There is an example of how to set up a gtk4 application at https://github.com/haskell-gi/haskell-gi/tree/master/examples/Gtk4
You can see what this attribute does in the documentation for GtkStack: https://hackage.haskell.org/package/gi-gtk-4.0.5/docs/GI-Gtk-Objects-Stack.html#g:attr:transitionType
Alternatively, you can query what the type system is doing by using
resolveAttr, for example by doing the following inside cabal repl for your project::set -XTypeApplications
:set -XOverloadedLabels
import qualified GI.Gtk as Gtk
import Data.GI.Base.Attributes (resolveAttr)
resolveAttr (undefined :: Gtk.Stack) #transitionType
If you do this in a modern terminal you will get a clickable link pointing to the documentation
also things like new Gtk.Box [#orientation := Gtk.OrientationHorizontal] how is new defined? is it a function? if so why isn't it prefixed with something?
new comes from Data.GI.Base: https://hackage.haskell.org/package/haskell-gi-base/docs/Data-GI-Base.html#v:new
Has anyone ever got GTK.widgetShapeCombineRegion or GDK.windowShapeCombineRegion to work? I've tried this, but it doesn't actually change the region:
setSourceRGBA 0.0 0.0 0.0 0.0
withTargetSurface $ \surface -> do
liftIO $ withSurface surface $ \ptr -> do
newPtr <- return (castPtr ptr) :: IO (Ptr Cairo.Surface)
surf <- newManagedPtr newPtr (return ())
region <- Gdk.cairoRegionCreateFromSurface (Cairo.Surface surf)
Gtk.widgetShapeCombineRegion widget (Just region)
When I try to build a project which uses gi-harfbuzz, I get the following error. Does anybody know how to solve it?
GI/HarfBuzz/Functions.hs:1772:1: error:
Could not find module ‘GI.Freetype2.Structs.Face’
Use -v (or `:set -v` in ghci) to see a list of the files searched for.
|
1772 | import qualified GI.Freetype2.Structs.Face as Freetype2.Face
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cabal: Failed to build gi-harfbuzz-0.0.5 (which is required by
CookieCalculator-0.1.0.0). See the build log above for details.