1 files changed, 46 insertions, 0 deletions
diff --git a/sample/tkline.rb b/sample/tkline.rb
new file mode 100644
index 0000000000..63d763a680
--- /dev/null
+++ b/sample/tkline.rb
@@ -0,0 +1,46 @@
+
+$tk_thread_safe = TRUE
+require "tkclass"
+
+$tkline_init = FALSE
+def start_random
+  return if $tkline_init
+  $tkline_init = TRUE
+  if defined? Thread
+    Thread.start do
+      loop do
+	sleep 2
+	Line.new($c, rand(400), rand(200), rand(400), rand(200))
+      end
+    end
+  end
+end
+
+$c = Canvas.new
+$c.pack
+$start_x = start_y = 0
+
+def do_press(x, y)
+  $start_x = x
+  $start_y = y
+  $current_line = Line.new($c, x, y, x, y)
+  start_random
+end
+def do_motion(x, y)
+  if $current_line
+    $current_line.coords $start_x, $start_y, x, y
+  end
+end
+
+def do_release(x, y)
+  if $current_line
+    $current_line.coords $start_x, $start_y, x, y
+    $current_line.fill 'black'
+    $current_line = nil
+  end
+end
+
+$c.bind("1", proc{|e| do_press e.x, e.y})
+$c.bind("B1-Motion", proc{|x, y| do_motion x, y}, "%x %y")
+$c.bind("ButtonRelease-1", proc{|x, y| do_release x, y}, "%x %y")
+Tk.mainloop