diff --git a/tests/timeit/11.signals.slots.03.py b/tests/timeit/11.signals.slots.03.py
index 408ab28b..9350156b 100644
--- a/tests/timeit/11.signals.slots.03.py
+++ b/tests/timeit/11.signals.slots.03.py
@@ -25,20 +25,23 @@
 import sys, os
 
 import timeit
-import random
-import unicodedata
 
 sys.path.append(os.path.join(sys.path[0],'../..'))
 sys.path.append(os.path.join(sys.path[0],'.'))
-import TermTk as ttk
+# import TermTk as ttk
 
+sl1 = slice(1)
+sl2 = slice(2)
+sl3 = slice(3)
+sl4 = slice(4)
 
 def f1(a):       return a
 def f2(a,b):     return a+b
 def f3(a,b,c):   return a+b+c
 def f4(a,b,c,d): return a+b+c+d
 
-ccb = {f1:1, f2:2, f3:3, f4:4}
+ccb  = {f1:1, f2:2, f3:3, f4:4}
+ccbs = {f1:sl1, f2:sl2, f3:sl3, f4:sl4}
 
 def c1(*args,**argv): return f1(*args[:1])
 def c2(*args,**argv): return f2(*args[:2])
@@ -56,48 +59,46 @@ def e1(*args,**argv):
     f3(1,2,3)
     f4(1,2,3,4)
 
+def e11(*args,**argv):
+    f1(*args[sl1])
+    f2(*args[sl2])
+    f3(*args[sl3])
+    f4(*args[sl4])
+
 def e2(*args,**argv):
     for cb in ccb:
         nargs = ccb[cb]
         cb(*args[:nargs])
 
 def e3(*args,**argv):
-    for cb in ccb.copy():
-        nargs = ccb[cb]
-        cb(*args[:nargs])
+    for cb in ccbs.copy():
+        nargs = ccbs[cb]
+        cb(*args[nargs])
 
 def e4(*args,**argv):
     for cb,n in ccb.copy().items():
         cb(*args[:n])
 
-
-def test1(v): return d1(1)
-def test2(v): return d2(1,2)
-def test3(v): return d3(1,2,3)
-def test4(v): return d4(1,2,3,4)
-def test5(v): return e1(1,2,3,4)
-def test6(v): return e2(1,2,3,4)
-def test7(v): return e3(1,2,3,4)
-def test8(v): return e4(1,2,3,4)
-
-
-loop = 200000
-
-
-a=1
-result = timeit.timeit('test1(a)', globals=globals(), number=loop)
-print(f"1a s {result / loop:.10f} - {result / loop} {test1(a)}")
-result = timeit.timeit('test2(a)', globals=globals(), number=loop)
-print(f"2a   {result / loop:.10f} - {result / loop} {test2(a)}")
-result = timeit.timeit('test3(a)', globals=globals(), number=loop)
-print(f"3a s {result / loop:.10f} - {result / loop} {test3(a)}")
-result = timeit.timeit('test4(a)', globals=globals(), number=loop)
-print(f"4a   {result / loop:.10f} - {result / loop} {test4(a)}")
-result = timeit.timeit('test5(a)', globals=globals(), number=loop)
-print(f"5a s {result / loop:.10f} - {result / loop} {test5(a)}")
-result = timeit.timeit('test6(a)', globals=globals(), number=loop)
-print(f"6a   {result / loop:.10f} - {result / loop} {test6(a)}")
-result = timeit.timeit('test7(a)', globals=globals(), number=loop)
-print(f"7a s {result / loop:.10f} - {result / loop} {test7(a)}")
-result = timeit.timeit('test8(a)', globals=globals(), number=loop)
-print(f"8a   {result / loop:.10f} - {result / loop} {test8(a)}")
+def e5(*args,**argv):
+    for cb,s in ccbs.copy().items():
+        cb(*args[s])
+
+def test1(): return d1(1)
+def test2(): return d2(1,2)
+def test3(): return d3(1,2,3)
+def test4(): return d4(1,2,3,4)
+def test5(): return e11(1,2,3,4,5,6,7,8,9)
+def test6(): return e2(1,2,3,4,5,6,7,8,9)
+def test7(): return e3(1,2,3,4,5,6,7,8,9)
+def test8(): return e4(1,2,3,4,5,6,7,8,9)
+def test9(): return e5(1,2,3,4,5,6,7,8,9)
+
+loop = 500000
+
+a={}
+
+iii = 1
+while (testName := f'test{iii}') and (testName in globals()):
+    result = timeit.timeit(f'{testName}(*a)', globals=globals(), number=loop)
+    print(f"{iii}) s {result / loop:.10f} - {result / loop} {globals()[testName](*a)}")
+    iii+=1
diff --git a/ttkDesigner/app/signalsloteditor.py b/ttkDesigner/app/signalsloteditor.py
index e12ba671..55e4b6c5 100644
--- a/ttkDesigner/app/signalsloteditor.py
+++ b/ttkDesigner/app/signalsloteditor.py
@@ -196,12 +196,20 @@ class SignalSlotEditor(ttk.TTkWidget):
         self.layout().addWidget(self._detail,2,1,1,3)
 
         addb.clicked.connect(self._addStuff)
+        delb.clicked.connect(self._delStuff)
 
     def _addStuff(self):
         item = _SignalSlotItem(self._windowEditor)
         self._items.append(item)
         self._detail.addTopLevelItem(item)
 
+    def _delStuff(self):
+        if not (items := self._detail.selectedItems()):
+            return
+        for item in items:
+            if (index := self._detail.indexOfTopLevelItem(item)) is not None:
+                self._detail.takeTopLevelItem(index)
+
     def dumpDict(self):
         ret = []
         for i in self._items: