wx.Python:在多个面板之间传递控制 [英] wx.Python: Passing control between multiple panels

问题描述

我是 wxPython 的新手，研究过类似的问题，但找不到我的问题的具体答案.我正在用分离器创建两个面板.每个面板都有许多小部件.我想在一个面板中有一个小部件控制另一个面板的一些属性，反之亦然)

I'm a newbie to wxPython, and have researched similar questions, but can't specifically find an answer to my question. I'm creating two panels with a splitter. Each panel has a number of widgets. I'd like to have a widget in one panel control some properties of the other and vice versa)

在示例中，我试图从 LeftPanel 中的按钮更改 RightPanel 的背景.我显然做错了什么，因为我收到错误:

In the example, I'm trying to change the background of RightPanel from a button in LeftPanel. I'm obviously doing something wrong as a I get an error:

TypeError: init() 只需要 2 个参数(给定 1 个)

TypeError: init() takes exactly 2 arguments (1 given)

代码:

import wx
import wx.grid as gridlib
import  pyodbc

class RightPanel(wx.Panel):
""""""

def __init__(self, parent):
    """Constructor"""
    wx.Panel.__init__(self, parent=parent)        

    grid = gridlib.Grid(self)
    grid.CreateGrid(5,5)

    sizer = wx.BoxSizer(wx.VERTICAL)
    sizer.Add(grid, 0, wx.EXPAND)
    self.SetSizer(sizer)

class LeftPanel(wx.Panel):
""""""

def __init__(self, parent):
    """Constructor"""
    wx.Panel.__init__(self, parent=parent)  

    self.create_controls()
    self.SetBackgroundColour("light green")

def create_controls(self):

    self.h_sizer = wx.BoxSizer(wx.HORIZONTAL)
    self.v_sizer = wx.BoxSizer(wx.VERTICAL)

    self.button = wx.Button(self, label="Press me!")
    self.button.Bind(wx.EVT_BUTTON, self.on_button_pressed)     

    self.v_sizer.Add(self.button, 0)

    self.v_sizer.Add(self.h_sizer, 0, wx.EXPAND)
    self.SetSizer(self.v_sizer)

def on_button_pressed(Panel,event):

        RightPanel().SetBackgroundColour("light blue")

class MyForm(wx.Frame):

def __init__(self):
    wx.Frame.__init__(self, None, wx.ID_ANY, "DB Viewer",size=(350, 250))

    splitter = wx.SplitterWindow(self)
    leftP = LeftPanel(splitter)
    rightP = RightPanel(splitter)

    splitter.SplitVertically(leftP, rightP)
    splitter.SetMinimumPaneSize(20)

    sizer = wx.BoxSizer(wx.VERTICAL)
    sizer.Add(splitter, 1, wx.EXPAND)
    self.SetSizer(sizer)

if __name__ == "__main__":
app = wx.App(False)
frame = MyForm()
frame.Show()
app.MainLoop()

非常感谢任何帮助.问候

Any help greatly appreciated. Regards

推荐答案

在你的代码中

def on_button_pressed(Panel,event):

    RightPanel().SetBackgroundColour("light blue")

在定义中 'Panel' 应该是 'self' 因为 'on_button_pressed' 是一个实例方法

In the definition 'Panel' should be 'self' as 'on_button_pressed' is a instance method

然后您将创建一个新的 RightPanel 而不是访问已创建的实例.

Then you are creating a new RightPanel instead of acces the already created instance.

我将绑定移动到父框架，以便它可以调用另一个子面板上的方法.请参阅下面的修改代码.

I moved the bind to the parent frame so it can call methods on the other child panel. See the modified code below.

import wx
import wx.grid as gridlib
# import  pyodbc


class RightPanel(wx.Panel):
    """"""

    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)

        grid = gridlib.Grid(self)
        grid.CreateGrid(5, 5)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(grid, 0, wx.EXPAND)
        self.SetSizer(sizer)


class LeftPanel(wx.Panel):
    """"""

    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)

        self.create_controls()
        self.SetBackgroundColour("light green")

    def create_controls(self):

        self.h_sizer = wx.BoxSizer(wx.HORIZONTAL)
        self.v_sizer = wx.BoxSizer(wx.VERTICAL)

        self.button = wx.Button(self, label="Press me!")

        self.v_sizer.Add(self.button, 0)

        self.v_sizer.Add(self.h_sizer, 0, wx.EXPAND)
        self.SetSizer(self.v_sizer)


class MyForm(wx.Frame):

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "DB Viewer", size=(350, 250))

        splitter = wx.SplitterWindow(self)
        leftP = LeftPanel(splitter)
        self.rightP = RightPanel(splitter)

        splitter.SplitVertically(leftP, self.rightP)
        splitter.SetMinimumPaneSize(20)

        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(splitter, 1, wx.EXPAND)
        self.SetSizer(sizer)

        leftP.button.Bind(wx.EVT_BUTTON, self.on_button_pressed)

        self.Layout()

    def on_button_pressed(self, event):
            self.rightP.SetBackgroundColour("light blue")
            self.Refresh()

if __name__ == "__main__":
    app = wx.App(False)
    frame = MyForm()
    frame.Show()
    app.MainLoop()

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