wxPython：在向框架添加一个窗口小部件时，窗口小部件定位不正确

Posted 2021-04-10

当我在框架中使用一个按钮并使用坐标定位它时，窗口小部件无法正确显示。它占用整个帧。当我向框架添加另一个按钮时，两个按钮都会正确显示。为什么是这样？

我在Mac OS 10.4，Mac OS 10.12和Windows 10上运行的wxPython上试过这个。每次都显示一个小部件不正确。

# This will display the buttons incorrectly
import wx

app = wx.App()
frame = wx.Frame(None, wx.ID_ANY, "Main Window")
button1 = wx.Button(frame, wx.ID_ANY, "Button 1", (50, 50))
frame.Show()
app.MainLoop()

# This will display the buttons correctly
import wx

app = wx.App()
frame = wx.Frame(None, wx.ID_ANY, "Main Window")
button1 = wx.Button(frame, wx.ID_ANY, "Button 1", (50, 50))
button2 = wx.Button(frame, wx.ID_ANY, "Button 2", (160, 50))
frame.Show()
app.MainLoop()

我希望一个Button示例显示在指定的位置，就像两个按钮示例一样。这是wxPython的错误吗？

答案

将框架视为小部件的包装器。通常一帧将包含一个或多个Panels。 来自文件：if the frame has exactly one child window, not counting the status and toolbar, this child is resized to take the entire frame client area.

A panel is a window on which controls are placed. It is usually placed within a frame. Its main feature over its parent class wx.Window is code for handling child windows and TAB traversal.

将panel合并到您的代码中：

import wx
app = wx.App()
frame = wx.Frame(None, wx.ID_ANY, "Window")
panel = wx.Panel(frame,wx.ID_ANY)
button1 = wx.Button(panel, wx.ID_ANY, "Button 1", pos=(50, 50))
frame.Show()
app.MainLoop()

它会表现自己。