python-2.7 - wxpython-如何从自定义wx对话框获取返回值

Question

这是 wxpython-can we add ok button on pybusyinfo dialog? 的后续问题

我创建了自定义对话框。当我们从另一个函数调用一个函数时，它会弹出，并且如果用户单击对话框窗口上的“不继续”按钮，我需要获取 true/False 值来表明是否按下了特定按钮或not 并将该值传递给函数调用以进一步进行。

但是使用wx自定义对话框我无法返回任何值，因为一旦我们按下任何按钮，对话框就会被破坏。

有没有办法通过按钮单击事件从自定义对话框类获取返回值，并且即使它被销毁也可以从类外部访问。

提前致谢。

def main():
    print "start execution"
    ret = getUserInput("Do you want to proceed?")
    if ret:
        print "proceed"
    else:
        print "exit"
def getUserInput(msg):
    class Busy(wx.Dialog):
        def __init__(self, parent, msg):
            wx.Dialog.__init__(self, parent, wx.ID_ANY, "Message", size=(420, 200))
            self.panel = wx.Panel(self, wx.ID_ANY)

            self.label = wx.StaticText(self.panel, label=msg, pos=(20, 20))

            self.gauge = wx.Gauge(self.panel, size=(300, 20), pos=(50, 50), style=wx.GA_HORIZONTAL)
            self.livelabel = wx.StaticText(self.panel, label="Time to live:", pos=(50, 80))
            self.lltime = wx.StaticText(self.panel, label="30", pos=(130, 80))
            self.notProceedButton = wx.Button(self.panel, label="Don't proceed", pos=(50, 100))

            self.timeoutButton = wx.Button(self.panel, label="Timer Off", pos=(250, 100))
            self.notProceedButton.Bind(wx.EVT_BUTTON, self.notProceed)

            self.timeoutButton.Bind(wx.EVT_BUTTON, self.OnNoTimeout)
            self.Bind(wx.EVT_CLOSE, self.OnQuit)
            self.timer = wx.Timer(self)
            self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer)
            self.lifetimer = wx.Timer(self)
            self.Bind(wx.EVT_TIMER, self.OnLifeTimer, self.lifetimer)
            self.timer.Start(100)
            self.lifetimer.Start(1000)
            self.timeoutbutton_pressed = False
            self.gauge.SetBackgroundColour(wx.Colour(0, 127, 255, 255))  # Slate Blue
            self.gauge.SetRange(100)
            self.gauge.SetValue(0)
            self.life = 30
            self.direction = 1
            self.result_text = True


        def OnTimer(self, evt):  # Update gauge
            x = int(self.gauge.GetValue())
            if x == 0:
                self.direction = 1
            elif x == 100:
                self.direction = -1
            x += self.direction
            self.gauge.SetValue(x)

        def OnLifeTimer(self, evt):  # Update time to live
            if self.timeoutbutton_pressed == True:
                return
            self.life -= 1
            self.lltime.SetLabelText(str(self.life))
            if self.life < 1:
                self.OnQuit(None)

        def OnNoTimeout(self, evt):  # toggle time to live
            if self.timeoutbutton_pressed == False:
                self.timeoutbutton_pressed = True
                self.timeoutButton.SetLabel("Timer On")
            else:
                self.timeoutbutton_pressed = False
                self.timeoutButton.SetLabel("Timer Off")

        def OnQuit(self, event):
            self.timer.Stop()
            self.lifetimer.Stop()
            self.Destroy()


        def notProceed(self, event):  # return input
            self.result_text = False
            self.timer.Stop()
            self.lifetimer.Stop()
            self.Destroy()

    app = wx.App()

    dlg = Busy(parent = None, msg=msg)
    dlg.ShowModal()

    return dlg.result_text 

Answer 1

当然。 EndModal 方法将返回您想要的任何返回代码。即

    def OnLifeTimer(self, evt):  # Update time to live
        if self.timeoutbutton_pressed == True:
            return
        self.life -= 1
        self.lltime.SetLabelText(str(self.life))
        if self.life < 1:
            self.EndModal(SOME_ID_THAT_YOU_DEFINED_SOMEWHERE_ELSE)
            self.OnQuit(None)

传递给EndModal的参数是从ShowModal返回的

app = wx.App()

dlg = Busy(parent = None, msg=msg)
return_code = dlg.ShowModal()

顺便说一句，您不必从对话框中调用 Destroy。如果你想从中检索一些标志或其他信息，你可以在之后调用 Destroy ，即

app = wx.App()

dlg = Busy(parent = None, msg=msg)
return_value = dlg.ShowModal()
some_other_value = dlg.some_other_value
dlg.Destroy()