Error in 'tkextlib/tcllib/tooltip'

[s7pdragon]

I'm tryng to add a tooltip to widgets. but, I get an error when loading the library.

C:/usr/Ruby/lib/ruby/gems/4.0.0/gems/tk-0.6.0/lib/tkextlib/tcllib/tooltip.rb:38:in '<module:Tooltip>': uninitialized constant Tk::Tcllib::Tooltip::WidgetClassNames (NameError)

  WidgetClassNames[WidgetClassName] ||= self
  ^^^^^^^^^^^^^^^^
        from C:/usr/Ruby/lib/ruby/gems/4.0.0/gems/tk-0.6.0/lib/tkextlib/tcllib/tooltip.rb:34:in '<top (required)>'
        from tootip_test.rb:6:in 'Kernel#require'
        from tootip_test.rb:6:in '<main>'

'tooltip_test.rb' is below

require 'tk'
require 'tkextlib/tcllib/tooltip'

root = TkRoot.new { title "Tooltip Test" }

button = TkButton.new(root) {
  text "Hover me"
  pack('padx'=>20, 'pady'=>20)
}

Tk::Tcllib::Tooltip.register(button, "Tip help here.")

Tk.mainloop

' WidgetClassNames' in 'tooltip.rb'

tk/lib/tkextlib/tcllib/tooltip.rb

Lines 34 to 45 in 3060cde

	module Tk::Tcllib::Tooltip
	extend TkCore
	WidgetClassName = 'Tooltip'.freeze
	WidgetClassNames[WidgetClassName] ||= self
	def self.database_classname
	self::WidgetClassName
	end
	def self.database_class
	WidgetClassNames[self::WidgetClassName]
	end

the 'WidgetClassNames' seems to be a constat of 'TkCore' ?

Experimentally. I modified ' WidgetClassNames' to 'TkCore::'WidgetClassNames' , and It seems to be going well.

[jeremyevans]

Thank you for the report.

Can you please let me know if this fixes it?

diff --git a/lib/tkextlib/tcllib/tooltip.rb b/lib/tkextlib/tcllib/tooltip.rb
index 56e2d2c..cbafd53 100644
--- a/lib/tkextlib/tcllib/tooltip.rb
+++ b/lib/tkextlib/tcllib/tooltip.rb
@@ -33,6 +33,7 @@ end
 
 module Tk::Tcllib::Tooltip
   extend TkCore
+  include Tk
 
   WidgetClassName = 'Tooltip'.freeze
   WidgetClassNames[WidgetClassName] ||= self

I tried to test this myself, but I get TkPackage can't find package tooltip. Maybe this doesn't work in Tk 9?

[s7pdragon]

Thank you for the prompt correction.

This fix works fine! in my environment : Ruby Installer for windows + Tk 8.6 (Msys2)

I tried to test this myself, but I get TkPackage can't find package tooltip. Maybe this doesn't work in Tk 9?

Sorry, I have no Tk 9 environment, and can't test with it.