在事件触发器上更新 wxpython 中的静态标签

如何解决在事件触发器上更新 wxpython 中的静态标签

我正在构建一个应用程序，该应用程序将显示有关摩托车的基本信息，例如 RPM 及其所在的档位。假设我们通过“按下键盘按钮”更改档位，我怎样才能让它更新标签。假设等效键是向上键，到目前为止，这是我想出的，但是在触发事件时标签不会更新。我可能做错了什么？

import wx
import sys

var =int(sys.argv[1])
gr = "N" 

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.gauge_1 = wx.Gauge(self,wx.ID_ANY,10000,style=wx.GA_HORIZONTAL | wx.GA_SMOOTH)
        
        self.Bind(wx.EVT_KEY_UP,self.OnKeyUp)
        
        self.__set_properties()
        self.__do_layout()

    def __set_properties(self):
        self.SetTitle("Test")
        self.gauge_1.SetBackgroundColour(wx.Colour(216,216,191))
        self.gauge_1.SetForegroundColour(wx.Colour(128,206))
        self.gauge_1.SetFont(wx.Font(11,wx.FONTFAMILY_DEFAULT,wx.FONTSTYLE_norMAL,wx.FONTWEIGHT_norMAL,"Ubuntu"))
        self.gauge_1.SetValue(var)

    def __do_layout(self):
        sizer_1 = wx.BoxSizer(wx.VERTICAL)
        sizer_1.Add(self.gauge_1,wx.EXPAND,0)
        label_1 = wx.StaticText(self,"GEAR")
        label_1.SetMinSize((100,50))
        label_1.SetForegroundColour(wx.Colour(0,137,215))
        label_1.SetFont(wx.Font(25,wx.FONTFAMILY_MODERN,wx.FONTSTYLE_ITALIC,""))
        sizer_1.Add(label_1,wx.ALL,3)
        Gearind = wx.StaticText(self,gr,style=wx.ALIGN_CENTER)
        Gearind.SetMinSize((50,43))
        Gearind.SetForegroundColour(wx.Colour(122,7))
        Gearind.SetFont(wx.Font(32,wx.FONTSTYLE_SLANT,""))
        sizer_1.Add(Gearind,0)
        self.SetSizer(sizer_1)
        self.Layout()


    def OnKeyUp(self,evt):
        code = evt.GetKeyCode()
        
        if code == wx.WXK_UP:
            gr = "1"
            self.Gearind.SetLabel(gr)
        elif code == wx.WXK_DOWN:
            evt.Skip()



class MyApp(wx.App):
    def OnInit(self): 
        self.Test = MyFrame(None,"")
        self.SetTopWindow(self.Test)
        self.Test.Show()
        return True



if __name__ == "__main__":
    app = MyApp(0)
    app.MainLoop()

解决方法

我不相信 Frame 接受字符。
使用带有样式 wx.Window 或 wx.WANTS_CHARS

的 wx.Panel

您想更新 self.Gearind 无济于事，但您将其定义为 local，即 Gearind。

在下面，我添加了一个面板和其他一些调整（注意仪表值）。

您可能想要调查 wxpython SpeedMeter，它可能会向您的程序添加一些 Vroooom!。

import wx
import sys

try:
    var =int(sys.argv[1])
except Exception:
    var = 0
gr = "N" 

class MyFrame(wx.Frame):
    def __init__(self,parent):
        wx.Frame.__init__(self,parent,wx.ID_ANY)
        self.SetSize((400,300))
        self.panel = wx.Panel(self,wx.ID_ANY)
        self.gauge_1 = wx.Gauge(self.panel,wx.ID_ANY,6,style=wx.GA_HORIZONTAL | wx.GA_SMOOTH)
        
        self.panel.Bind(wx.EVT_KEY_UP,self.OnKeyUp)
        
        self.__set_properties()
        self.__do_layout()

    def __set_properties(self):
        self.SetTitle("Test")
        #self.gauge_1.SetBackgroundColour(wx.Colour(216,216,191))
        #self.gauge_1.SetForegroundColour(wx.Colour(128,206))
        #self.gauge_1.SetFont(wx.Font(11,wx.FONTFAMILY_DEFAULT,wx.FONTSTYLE_NORMAL,wx.FONTWEIGHT_NORMAL,"Ubuntu"))
        self.gauge_1.SetValue(var)

    def __do_layout(self):
        sizer_1 = wx.BoxSizer(wx.VERTICAL)
        sizer_1.Add(self.gauge_1,wx.EXPAND,0)
        label_1 = wx.StaticText(self.panel,"GEAR")
        label_1.SetMinSize((100,50))
        label_1.SetForegroundColour(wx.Colour(0,137,215))
        label_1.SetFont(wx.Font(25,wx.FONTFAMILY_MODERN,wx.FONTSTYLE_ITALIC,""))
        sizer_1.Add(label_1,wx.ALL,3)
        self.Gearind = wx.StaticText(self.panel,gr,style=wx.ALIGN_CENTER)
        self.Gearind.SetMinSize((50,43))
        self.Gearind.SetForegroundColour(wx.Colour(122,7))
        self.Gearind.SetFont(wx.Font(32,wx.FONTSTYLE_SLANT,""))
        sizer_1.Add(self.Gearind,0)
        self.panel.SetSizer(sizer_1)
        self.Layout()


    def OnKeyUp(self,evt):
        code = evt.GetKeyCode()
        gr = self.Gearind.GetLabel()
        if gr.isnumeric():
            gr_up = int(gr) + 1
            gr_down = int(gr) - 1
        else:
            gr_up = 1
            gr_down = 0
        if gr_up > 6:
            gr_up = 6
        if gr_down < 1:
            gr_down = "N"
        if code == wx.WXK_UP:
            self.Gearind.SetLabel(str(gr_up))
        elif code == wx.WXK_DOWN:
            self.Gearind.SetLabel(str(gr_down))
        gr = self.Gearind.GetLabel()
        if gr == "N":
            var = 0
        else:
            var = int(gr)        
        self.gauge_1.SetValue(var)
        evt.Skip()



class MyApp(wx.App):
    def OnInit(self): 
        self.Test = MyFrame(None)
        self.SetTopWindow(self.Test)
        self.Test.Show()
        return True



if __name__ == "__main__":
    app = MyApp(0)
    app.MainLoop()