在Windows下创建wx.ComboBox时,您可以指定wxCB_READONLY
以允许用户从仅提议的选项中进行选择。但您可以清除选择:
combo.SetSelection(wx.NOT_FOUND)
但是在linux(wxGTK)下,该选项在创建时被取消选择,但一旦被选中就无法清除。不是以下任何一种:
combo.SetSelection(wx.NOT_FOUND)
combo.SetValue('')
无论如何都可以这样做吗?
答案 0 :(得分:0)
实际上,将值设置为空字符串适用于Arch Linux:
import wx
########################################################################
class MyPanel(wx.Panel):
""""""
#----------------------------------------------------------------------
def __init__(self, parent):
"""Constructor"""
wx.Panel.__init__(self, parent)
choices = ["", "1", "2", "3"]
self.choices = choices
self.cbo = wx.ComboBox(self, value="1", choices=choices)
btn = wx.Button(self, label="Reset")
btn.Bind(wx.EVT_BUTTON, self.onReset)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(self.cbo, 0, wx.ALL, 5)
sizer.Add(btn, 0, wx.ALL, 5)
self.SetSizer(sizer)
#----------------------------------------------------------------------
def onReset(self, event):
""""""
print "resetting"
self.cbo.SetValue("")
########################################################################
class MyFrame(wx.Frame):
""""""
#----------------------------------------------------------------------
def __init__(self):
"""Constructor"""
wx.Frame.__init__(self, None, title="CombBox")
panel = MyPanel(self)
self.Show()
if __name__ == "__main__":
app = wx.App(False)
frame = MyFrame()
app.MainLoop()