Copy the wxPython demo from Classic

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxPython/Phoenix/trunk@74164 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

demo/PythonEvents.py

@@ -0,0 +1,108 @@
+
+import  sys
+
+import  wx
+
+#----------------------------------------------------------------------
+
+# This shows the new 'official' way to do custom events as derived
+# from the wxPython 2.5 migration guide.
+
+#######################################################\
+#  *** Old and busted ***                              |
+#                                                      |
+# myEVT_BUTTON_CLICKPOS = wx.NewEventType()            |
+#                                                      |
+# def EVT_BUTTON_CLICKPOS(win, id, func):              |
+#     win.Connect(id, -1, myEVT_BUTTON_CLICKPOS, func) |
+#######################################################/
+
+#############################\
+#   *** The new Hottness *** |
+#############################/
+myEVT_BUTTON_CLICKPOS = wx.NewEventType()
+EVT_BUTTON_CLICKPOS = wx.PyEventBinder(myEVT_BUTTON_CLICKPOS, 1)
+
+#----------------------------------------------------------------------
+
+
+class MyEvent(wx.PyCommandEvent):
+    def __init__(self, evtType, id):
+        wx.PyCommandEvent.__init__(self, evtType, id)
+        self.myVal = None
+
+    #def __del__(self):
+    #    print '__del__'
+    #    wx.PyCommandEvent.__del__(self)
+
+    def SetMyVal(self, val):
+        self.myVal = val
+
+    def GetMyVal(self):
+        return self.myVal
+
+
+class MyButton(wx.Button):
+    def __init__(self, parent, id, txt, pos):
+        wx.Button.__init__(self, parent, id, txt, pos)
+        self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
+
+    def OnLeftDown(self, event):
+        pt = event.GetPosition()
+        evt = MyEvent(myEVT_BUTTON_CLICKPOS, self.GetId())
+        evt.SetMyVal(pt)
+        #print id(evt), sys.getrefcount(evt)
+        self.GetEventHandler().ProcessEvent(evt)
+        #print id(evt), sys.getrefcount(evt)
+        event.Skip()
+
+
+
+class TestPanel(wx.Panel):
+    def __init__(self, parent, log):
+        wx.Panel.__init__(self, parent, -1)
+        self.log = log
+
+        b = MyButton(self, -1, " Click me ", (30,30))
+        self.Bind(wx.EVT_BUTTON, self.OnClick, id=b.GetId())
+        
+        # This is our custom event binder created above.
+        self.Bind(EVT_BUTTON_CLICKPOS, self.OnMyEvent, id=b.GetId())
+
+        wx.StaticText(
+            self, -1, "Please see the Overview and Demo Code for details...",
+            (30, 80)
+            )
+
+
+    def OnClick(self, event):
+        self.log.WriteText("OnClick\n")
+
+    def OnMyEvent(self, event):
+        #print id(event), sys.getrefcount(event)
+        self.log.WriteText("MyEvent: %s\n" % (event.GetMyVal(), ) )
+
+
+#----------------------------------------------------------------------
+
+def runTest(frame, nb, log):
+    win = TestPanel(nb, log)
+    return win
+
+#----------------------------------------------------------------------
+
+
+overview = """\
+This demo is a contrived example of defining an event class in wxPython and 
+sending it up the containment hierarchy for processing.
+
+V2.5 note: this demo also shows the new style of creating event binders that
+is required if you used the *.Bind() method of setting up event handlers.
+"""
+
+
+if __name__ == '__main__':
+    import sys,os
+    import run
+    run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
+