问题描述
我想向现有的弹出菜单项添加一些子菜单项。我找到了几个关于如何为标准菜单创建子菜单的示例,但没有关于为弹出菜单创建子菜单的示例。
我尝试将与标准菜单相同的逻辑应用于弹出菜单,但未能正确执行(同时我在创建带有子菜单的标准菜单时没有遇到任何问题)。
# ...
class ButtonContext(wx.Menu):
def __init__(self,parent):
super(ButtonContext,self).__init__()
self.parent = parent
button_popup = wx.MenuItem(self,wx.ID_ANY,'test popup')
self.Append(button_popup)
self.Bind(wx.EVT_MENU,self.button_action,button_popup)
def button_action(self,event):
event.Skip()
# ...
解决方法
这会起作用,实际上弹出菜单基于 wx.Menu
类,因此逻辑和行为是相同的
class ButtonContext(wx.Menu):
def __init__(self,parent):
super(ButtonContext,self).__init__()
self.parent = parent
button_popup = wx.MenuItem(self,wx.ID_ANY,'test popup')
submenu_popup = wx.Menu()
submenu_button_popup = wx.MenuItem(self,'test submenu popup')
submenu_popup.Append(submenu_button_popup)
self.AppendSubMenu(submenu_popup,"submenu")
self.Append(button_popup)
self.Bind(wx.EVT_MENU,self.button_action,button_popup)
,
只是为了说明 SetSubMenu(menu)
方法,该方法也可用于在此实例中创建子菜单。
import wx
class MyFrame(wx.Frame):
def __init__(self,*args,**kwds):
kwds["style"] = kwds.get("style",0) | wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self,**kwds)
self.SetSize((400,300))
self.SetTitle("test frame")
sizer_0 = wx.BoxSizer(wx.HORIZONTAL)
self.window_1 = wx.SplitterWindow(self,wx.ID_ANY)
self.window_1.SetMinimumPaneSize(20)
sizer_0.Add(self.window_1,1,wx.EXPAND,0)
self.pane_1 = wx.Panel(self.window_1,wx.ID_ANY)
sizer_1 = wx.BoxSizer(wx.HORIZONTAL)
self.pane_2 = wx.Panel(self.window_1,wx.ID_ANY)
sizer_2 = wx.BoxSizer(wx.HORIZONTAL)
self.button = wx.Button(self.pane_2,"test button")
sizer_2.Add(self.button,0)
self.pane_1.SetSizer(sizer_1)
self.pane_2.SetSizer(sizer_2)
self.window_1.SplitVertically(self.pane_1,self.pane_2)
self.SetSizer(sizer_0)
self.Layout()
self.Bind(wx.EVT_CONTEXT_MENU,self.OnButtonContextMenu,self.button)
self.Show()
def OnButtonContextMenu(self,event):
self.PopupMenu(ButtonContext(self))
class ButtonContext(wx.Menu):
def __init__(self,self).__init__()
self.parent = parent
button_popup = wx.MenuItem(self,'test popup')
self.Append(button_popup)
submenu = wx.Menu()
submenu1 = wx.MenuItem(submenu,'Submenu 1')
submenu2 = wx.MenuItem(submenu,'Submenu 2')
submenu3 = wx.MenuItem(submenu,'Submenu 3')
submenu.Append(submenu1)
submenu.Append(submenu2)
submenu.Append(submenu3)
button_popup2 = wx.MenuItem(self,'A sub menu')
button_popup2.SetSubMenu(submenu)
self.Append(button_popup2)
self.Bind(wx.EVT_MENU,button_popup)
self.Bind(wx.EVT_MENU,self.submenu1_action,submenu1)
def button_action(self,event):
print("Test Menu Button")
event.Skip()
def submenu1_action(self,event):
print("Submenu 1")
event.Skip()
class MyApp(wx.App):
def OnInit(self):
self.frame = MyFrame(None,"")
return True
if __name__ == "__main__":
app = MyApp()
app.MainLoop()