【发布时间】：2019-10-20 03:16:16
【问题描述】：
使用 wxPython4（又名 phoenix），我想要一个带有 TreeListCtrl 的 gui 来订阅双击并告诉处理程序代码 TreeListCtrl 中的哪个单元格被双击。
我目前使用的 wxPython4 的具体版本是 4.0.0b2，它附带了一个演示代码包，可在此处获取：https://extras.wxpython.org/wxPython4/extras/4.0.0b2/，其中包含以下用于 TreeListCtrl 演示的代码。
我应该如何修改此代码，以便我可以处理 TreeListCtrl 上的双击？
#!/usr/bin/env python
import wx
import wx.dataview
import images
#----------------------------------------------------------------------
class TestPanel(wx.Panel):
def __init__(self, parent, log):
self.log = log
wx.Panel.__init__(self, parent, -1)
self.Bind(wx.EVT_SIZE, self.OnSize)
self.tree = wx.dataview.TreeListCtrl(self, -1, style =
wx.TR_DEFAULT_STYLE
#| wx.TR_HAS_BUTTONS
#| wx.TR_TWIST_BUTTONS
#| wx.TR_ROW_LINES
#| wx.TR_COLUMN_LINES
#| wx.TR_NO_LINES
| wx.TR_FULL_ROW_HIGHLIGHT
)
isz = (16,16)
il = wx.ImageList(isz[0], isz[1])
fldridx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_FOLDER, wx.ART_OTHER, isz))
fldropenidx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_FILE_OPEN, wx.ART_OTHER, isz))
fileidx = il.Add(wx.ArtProvider.GetBitmap(wx.ART_NORMAL_FILE, wx.ART_OTHER, isz))
smileidx = il.Add(images.Smiles.GetBitmap())
self.tree.SetImageList(il)
self.il = il
# create some columns
self.tree.AppendColumn("Main column")
self.tree.AppendColumn("Column 1")
self.tree.AppendColumn("Column 2")
##self.tree.SetMainColumn(0) # the one with the tree in it...
self.tree.SetColumnWidth(0, 175)
self.root = self.tree.InsertItem(self.tree.GetRootItem(), wx.dataview.TLI_FIRST, "The Root Item")
self.tree.SetItemText(self.root, 1, "col 1 root")
self.tree.SetItemText(self.root, 2, "col 2 root")
self.tree.SetItemImage(self.root, closed=fldridx, opened=fldropenidx)
for x in range(15):
txt = "Item %d" % x
child = self.tree.AppendItem(self.root, txt)
self.tree.SetItemText(child, 1, txt + "(c1)")
self.tree.SetItemText(child, 2, txt + "(c2)")
self.tree.SetItemImage(child, closed=fldridx, opened=fldropenidx)
for y in range(5):
txt = "item %d-%s" % (x, chr(ord("a")+y))
last = self.tree.AppendItem(child, txt)
self.tree.SetItemText(last, 1, txt + "(c1)")
self.tree.SetItemText(last, 2, txt + "(c2)")
self.tree.SetItemImage(last, closed=fldridx, opened=fldropenidx)
for z in range(5):
txt = "item %d-%s-%d" % (x, chr(ord("a")+y), z)
item = self.tree.AppendItem(last, txt)
self.tree.SetItemText(item, 1, txt + "(c1)")
self.tree.SetItemText(item, 2, txt + "(c2)")
#TODO: Phoenix change selected to smiley
self.tree.SetItemImage(item, closed=fileidx, opened=smileidx)
## self.tree.SetItemImage(item, fileidx, which = wx.TreeItemIcon_Normal)
## self.tree.SetItemImage(item, smileidx, which = wx.TreeItemIcon_Selected)
self.tree.Expand(self.root)
## self.tree.GetMainWindow().Bind(wx.EVT_RIGHT_UP, self.OnRightUp)
self.tree.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivate)
def OnActivate(self, event):
self.log.write('OnActivate: %s' % self.tree.GetItemText(event.GetItem()))
def OnRightUp(self, event):
pos = event.GetPosition()
item, flags, col = self.tree.HitTest(pos)
if item:
self.log.write('Flags: %s, Col:%s, Text: %s' %
(flags, col, self.tree.GetItemText(item, col)))
def OnSize(self, event):
self.tree.SetSize(self.GetSize())
我在 Panel 构造函数的末尾尝试了以下两种变体，但都不起作用：
变体 1：
...
self.tree.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivate)
self.tree.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick)
def OnLeftDClick(self, event):
print("LeftDClick")
def OnActivate(self, event):
...
变体 2：
...
self.tree.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self.OnActivate)
self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick)
def OnLeftDClick(self, event):
print("LeftDClick")
def OnActivate(self, event):
...
当我双击树中的某个位置时，我希望看到“LeftDClick”文本出现在控制台上，但它没有。
注意 1：我曾经在 wxPython3 中使用该功能，订阅方式如下：
self.tree.GetMainWindow().Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick)
该代码在 wxPython4 中不再工作：
AttributeError: 'TreeListCtrl' object has no attribute 'GetMainWindow'
注意2：我想专门为wxPython4做这个工作的原因是我从python2移植到python3，而wxPython3与python3不兼容。
注意 3：wxPython4.0.0b2 TreeListCtrl 在 C++ 代码中带有以下错误：http://trac.wxwidgets.org/ticket/17476。该错误文件所附的补丁为我解决了这个问题。
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标签： double-click subscribe wxpython