1、问题背景
在使用 wxpython 开发 GUI 时，遇到了一个问题。当鼠标悬停在 BitmapButton 上时，会同时调用两个事件：
self.Bind(wx.EVT_LEAVE_WINDOW, self.onPanelMouseLeave)self.Bind(wx.EVT_ENTER_WINDOW, self.onPanelMouseOver)
这导致了程序出现不必要的重复调用，从而产生了不期望的行为。
2、解决方案
根据答案1中的建议，问题的原因在于隐藏和显示位图时，鼠标会离开面板，从而触发 onPanelMouseLeave 事件。因此，我们只需要在 onPanelMouseLeave 事件中注释掉 self.pluginClose.Hide() 语句，即可避免重复调用事件。
修改后的代码如下：
代码语言：python代码运行次数：0复制import wx
class Plugin(wx.Panel):
def __init__(self, parent, *args, **kwargs):
panel = wx.Panel.__init__(self, parent, *args, **kwargs)
self.colorOver = ((89,89,89))
self.colorLeave = ((110,110,110))
self.colorFont = ((145,145,145))
self.SetBackgroundColour(self.colorLeave)
self.SetForegroundColour(self.colorLeave)
self.name = "Plugin"
self.overPanel = 0
self.overLabel = 0
self.overButton = 0
sizer = wx.BoxSizer(wx.VERTICAL)
self.pluginName = wx.StaticText(self, -1, ' ' self.getName())
self.pluginClose = wx.BitmapButton(self, -1, wx.Bitmap('C:UsersAndré FerreiraDesktopTeseCódigo PythonSoundLogImagesclose.png'), style=wx.NO_BORDER)
self.pluginClose.Hide()
gs = wx.GridSizer(2, 2, 0, 0)
gs.AddMany([(self.pluginName, 0, wx.ALIGN_LEFT), (self.pluginClose, 0, wx.ALIGN_RIGHT|wx.CENTER)])
sizer.Add(gs, 1, wx.EXPAND)
self.SetSizer(sizer)
self.pluginName.Bind(wx.EVT_LEAVE_WINDOW, self.onLabelMouseLeave)
self.pluginName.Bind(wx.EVT_ENTER_WINDOW, self.onLabelMouseOver)
self.pluginClose.Bind(wx.EVT_BUTTON, self.onCloseMouseClick)
self.Bind(wx.EVT_LEAVE_WINDOW, self.onPanelMouseLeave)
self.Bind(wx.EVT_ENTER_WINDOW, self.onPanelMouseOver)
def onPanelMouseOver(self, event):
self.overPanel = 1
self.overLabel = 0
self.SetBackgroundColour(self.colorOver)
self.pluginName.SetForegroundColour(self.colorFont)
self.Refresh()
self.pluginClose.Show()
def onPanelMouseLeave(self, event):
# Comment out this line to fix the issue
# self.pluginClose.Hide()
if self.overLabel == 0:
self.overPanel = 0
self.SetBackgroundColour(self.colorLeave)
self.pluginName.SetForegroundColour(self.colorLeave)
self.Refresh()
def onLabelMouseOver(self, event):
self.overPanel = 0
self.overLabel = 1
self.SetBackgroundColour(self.colorOver)
self.pluginName.SetForegroundColour(self.colorFont)
self.Refresh()
self.pluginClose.Show()
def onLabelMouseLeave(self, event):
if self.overPanel == 0:
self.overLabel = 0
self.SetBackgroundColour(self.colorLeave)
self.pluginName.SetForegroundColour(self.colorLeave)
self.Refresh()
self.pluginClose.Hide()
def OnClose(self, event):
self.Close()
app.Destroy()
def onCloseMouseClick(self, event):
self.Hide()
def getName(self):
return self.name修改后的代码可以正常工作，当鼠标悬停在 BitmapButton 上时，只会调用 onLabelMouseOver 事件，而不会再同时调用 onPanelMouseLeave 和 onPanelMouseOver 事件。
