1 files changed, 50 insertions, 0 deletions
diff --git a/ext/tcltklib/demo/lines2.rb b/ext/tcltklib/demo/lines2.rb
new file mode 100644
index 0000000000..9f21ae6377
--- /dev/null
+++ b/ext/tcltklib/demo/lines2.rb
@@ -0,0 +1,50 @@
+#! /usr/local/bin/ruby
+
+require "tcltk"
+
+def drawlines()
+  print Time.now, "\n"
+
+  for j in 0 .. 99
+    print "*"
+    $stdout.flush
+    if (j & 1) != 0
+      col = "blue"
+    else
+      col = "red"
+    end
+    for i in 0 .. 99
+#      $a.e("create line", i, 0, 0, 500 - i, "-fill", col)
+    end
+  end
+
+  print Time.now, "\n"
+
+  for j in 0 .. 99
+    print "*"
+    $stdout.flush
+    if (j & 1) != 0
+      col = "blue"
+    else
+      col = "red"
+    end
+    for i in 0 .. 99
+      $a.e("create line", i, 0, 0, 500 - i, "-fill", col)
+    end
+  end
+
+  print Time.now, "\n"
+#  $ip.commands()["destroy"].e($root)
+end
+
+$ip = TclTkInterpreter.new()
+$root = $ip.rootwidget()
+$a = TclTkWidget.new($ip, $root, "canvas", "-height 500 -width 500")
+$c = TclTkCallback.new($ip, proc{drawlines()})
+$b = TclTkWidget.new($ip, $root, "button", "-text draw -command", $c)
+
+$ip.commands()["pack"].e($a, $b, "-side left")
+
+TclTk.mainloop
+
+# eof