Python：如何在wx.staticbox中绘制一些线

您好，我想在静态框内绘制一些彩色线，我使用了onpaint方法，但线没有出现在静态框内，然后我尝试创建一条静态线，这很有效，但我无法更改静态线的颜色。是否有其他方法可以使用onpaint方法或其他方法显示线条，我如何才能做到这一点

下面是一个示例代码：

import wx

class MainPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent=parent)
        self.frame = parent

        wx.StaticBox(self, -1, 'Example', (5, 30), size=(290, 185))

        self.Bind(wx.EVT_PAINT, self.OnPaint)

        #self.line = wx.StaticLine(self,-1, (25, 150), (100,1))
        #self.line.SetForegroundColour(("blue"))

    def OnPaint(self, event):
        dc = wx.PaintDC(self)
        dc.DrawLine(50, 10, 80, 10)
        dc.DrawLine(50, 140, 80, 140)
        dc.DrawLine(50, 300, 80, 300)

class MainFrame(wx.Frame): 

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "Window",size=(305,430))
        panel = MainPanel(self)
        self.CenterOnParent()

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

---

我怀疑你的问题是你在画画之前没有设置一支有颜色的钢笔——这可能会导致在白色背景上出现一条零宽度的白线。尝试添加

self.SetBackgroundColour(wx.WHITE)
dc.Clear()
dc.SetPen(wx.Pen("BLACK", 2))

到您的

OnPaint

功能

---

另一件需要明确的事情是，静态框是一个围绕某个对象绘制的框-您在面板上绘制，而不是在框中绘制。

问题是您在面板上绘制，而不是在静态框上绘制。您可以创建一个自定义静态框并执行您喜欢的操作，然后调用原始的

wx.StaticBox.OnPaint

like:

# custom StaticBox class
class MyStaticBox(wx.StaticBox):
  def __init__(self, *args, **kwargs):
    super(MyStaticBox, self).__init__(*args, **kwargs)
    self.Bind(wx.EVT_PAINT, self.OnPaint)

  def OnPaint(self, event):
    # do what you want here
    width, height = self.GetSize()
    dc = wx.PaintDC(self)
    dc.Clear()
    dc.SetPen(wx.Pen('#4285F4'))
    dc.DrawLine(0, 0, width, height)
    dc.DrawLine(width, 0, 0, height)
    # after you finished, call the StaticBox OnPaint
    super(MyStaticBox, self).OnPaint(event)

例如：

import wx

# custom StaticBox class
class MyStaticBox(wx.StaticBox):
  def __init__(self, *args, **kwargs):
    super(MyStaticBox, self).__init__(*args, **kwargs)
    self.Bind(wx.EVT_PAINT, self.OnPaint)

  def OnPaint(self, event):
    # do what you want here
    width, height = self.GetSize()
    dc = wx.PaintDC(self)
    dc.Clear()
    dc.SetPen(wx.Pen('#4285F4'))
    dc.DrawLine(0, 0, width, height)
    dc.DrawLine(width, 0, 0, height)
    # after you finished, call the StaticBox OnPaint
    super(MyStaticBox, self).OnPaint(event)

class MainPanel(wx.Panel):
    def __init__(self, parent):
        wx.Panel.__init__(self, parent=parent)
        self.frame = parent

        MyStaticBox(self, -1, 'Example', (5, 30), size=(290, 185))

        #self.line = wx.StaticLine(self,-1, (25, 150), (100,1))
        #self.line.SetForegroundColour(("blue"))

class MainFrame(wx.Frame): 

    def __init__(self):
        wx.Frame.__init__(self, None, wx.ID_ANY, "Window",size=(305,430))
        panel = MainPanel(self)
        self.CenterOnParent()

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

---

我怎样才能把它画进盒子里？之所以有这一行，是因为如果我禁用“wx.StaticBox（self，-1，‘Example’，（5,30），size=（290185）），这一行就会出现。