diff --git a/examples/glarea.jl b/examples/glarea.jl
index 887a6e1a..453922a6 100644
--- a/examples/glarea.jl
+++ b/examples/glarea.jl
@@ -198,6 +198,7 @@ end
 wh = 600
 w = GtkWindow("GL example", wh, wh)
 glarea = GtkGLArea()
+Gtk4.allowed_apis(glarea, Gtk4.GLAPI_GL)
 
 signal_connect(on_realized, glarea, "realize")
 Gtk4.on_render(render, glarea)
diff --git a/src/Gdk4.jl b/src/Gdk4.jl
index 1e71053f..df3e26a8 100644
--- a/src/Gdk4.jl
+++ b/src/Gdk4.jl
@@ -21,6 +21,8 @@ end
 convert(::Type{RGBA}, gcolor::_GdkRGBA) = RGBA(gcolor.red, gcolor.green, gcolor.blue, gcolor.alpha)
 convert(::Type{GdkRGBA}, color::Colorant) = GdkRGBA(red(color), green(color), blue(color), alpha(color))
 
+Base.show(io::IO, c::GdkRGBA) = print(io,"GdkRGBA(\""*G_.to_string(c)*"\")")
+
 ## GdkCursor
 
 GdkCursor(name::AbstractString; kwargs...) = GdkCursor(name, nothing; kwargs...)
diff --git a/src/Pango/Pango.jl b/src/Pango/Pango.jl
index 2371510f..b50ec010 100644
--- a/src/Pango/Pango.jl
+++ b/src/Pango/Pango.jl
@@ -79,7 +79,7 @@ eltype(::Type{PangoFontFamily}) = PangoFontFace
 Base.keys(ff::PangoFontFamily) = 1:length(ff)
 
 PangoFontDescription(s::AbstractString) = G_.font_description_from_string(s)
-Base.show(io::IO, pfd::PangoFontDescription) = print(io, "PangoFontDescription(" * G_.to_string(pfd) * ")")
+Base.show(io::IO, pfd::PangoFontDescription) = print(io, "PangoFontDescription(\"" * G_.to_string(pfd) * "\")")
 
 PangoLayout(cr::cairoContext) = G_.create_layout(cr)
 
diff --git a/src/base.jl b/src/base.jl
index 327dd052..d1b5691a 100644
--- a/src/base.jl
+++ b/src/base.jl
@@ -227,6 +227,8 @@ function GtkCssProvider(data::Union{AbstractString,Nothing}, filename = nothing)
     return provider
 end
 
+Base.show(io::IO, cssp::GtkCssProvider) = print(io,"GtkCssProviderLeaf(\""*G_.to_string(cssp)*"\")")
+
 function push!(context::GtkStyleContext, provider, priority=STYLE_PROVIDER_PRIORITY_USER)
     G_.add_provider(context, GtkStyleProvider(provider), priority)
     context