Fix task-scheduling conflict in Gtk call (#34)

Unfortunately I don't have a code-test reproducing the problem, but ImageView was able to trigger the same error described in JuliaGraphics/Gtk.jl#368. This robustly fixes it.
JuliaGizmos · Jun 18, 2022 · 2bfcfe5 · 2bfcfe5 · timholy · Jun 18, 2022
1 parent 51d8e09
commit 2bfcfe5
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diff --git a/Project.toml b/Project.toml
@@ -1,6 +1,6 @@
 name = "GtkObservables"
 uuid = "8710efd8-4ad6-11eb-33ea-2d5ceb25a41c"
-version = "1.2.3"
+version = "1.2.4"
 
 [deps]
 Cairo = "159f3aea-2a34-519c-b102-8c37f9878175"

diff --git a/src/widgets.jl b/src/widgets.jl
@@ -166,7 +166,7 @@ function Base.setindex!(s::Slider, (range,value)::Tuple{AbstractRange, Any})
     Gtk.G_.lower(adj, first(range))
     Gtk.G_.upper(adj, last(range))
     Gtk.G_.step_increment(adj, step(range))
-    Gtk.G_.value(widget(s), value)
+    Gtk.@sigatom Gtk.G_.value(widget(s), value)
 end
 Base.setindex!(s::Slider, range::AbstractRange) = setindex!(s, (range, s[]))