如何在wxpython中将图像作为背景

Question

如何给panel1添加背景图片？有哪个命令？

代码：

import wx
import wx
appy=wx.App()

class cg(wx.Frame) :
     def __init__(self,parent,id) :
         wx.Frame.__init__(self,parent,id,'GPA',pos=(1000,600),size=(600,400))
         #splitter = wx.SplitterWindow(self, -1)
         panel1 = wx.Panel(self)
         panel2 = wx.Panel(panel1, -1,size=(600,200),style=wx.BORDER_SUNKEN)
         panel3 = wx.Panel(panel1, -1,pos=(0,200),size=(600,200),style=wx.BORDER_SUNKEN)
         #panel3=wx.panel(panel1,-1,pos=(300,200),size=(600,200),style=wx.BORDER_SUNKEN)
         #panel13 = wx.Panel(panel1, -1, style=wx.BORDER_SUNKEN)
         #panel13 = wx.Panel(panel1, -1, style=wx.BORDER_SUNKEN)
         #panel13 = wx.Panel(panel1, -1, style=wx.BORDER_SUNKEN)

         #button1=wx.Button(panel1,label='exit',pos=(10,10),size=(10,10))
         #self.cnt1=wx.TextCtrl(panel1,pos=(40,60),size=(120,30))

if __name__=='__main__' :

     app=wx.PySimpleApp()
     frame=cg(parent=None,id=-1)
     frame.Show()
     app.MainLoop()

Answer 1

The Mouse vs. The Python中的更正示例。

import wx
 
########################################################################
class MainPanel(wx.Panel):
    """"""
 
    #----------------------------------------------------------------------
    def __init__(self, parent):
        """Constructor"""
        wx.Panel.__init__(self, parent=parent)
        self.SetBackgroundStyle(wx.BG_STYLE_PAINT) # Was wx.BG_STYLE_CUSTOM)
        self.frame = parent
 
        sizer = wx.BoxSizer(wx.VERTICAL)
        hSizer = wx.BoxSizer(wx.HORIZONTAL)
 
        for num in range(4):
            label = "Button %s" % num
            btn = wx.Button(self, label=label)
            sizer.Add(btn, 0, wx.ALL, 5)
        hSizer.Add((1,1), 1, wx.EXPAND)
        hSizer.Add(sizer, 0, wx.TOP, 100)
        hSizer.Add((1,1), 0, wx.ALL, 75)
        self.SetSizer(hSizer)
        self.Bind(wx.EVT_ERASE_BACKGROUND, self.OnEraseBackground)
 
    #----------------------------------------------------------------------
    def OnEraseBackground(self, evt):
        """
        Add a picture to the background
        """
        # yanked from ColourDB.py
        dc = evt.GetDC()
 
        if not dc:
            dc = wx.ClientDC(self)
            rect = self.GetUpdateRegion().GetBox()
            dc.SetClippingRect(rect)
        dc.Clear()
        bmp = wx.Bitmap("butterfly.jpg")
        dc.DrawBitmap(bmp, 0, 0)
 
 
########################################################################
class MainFrame(wx.Frame):
    """"""
 
    #----------------------------------------------------------------------
    def __init__(self):
        """Constructor"""
        wx.Frame.__init__(self, None, size=(600,450))
        panel = MainPanel(self)        
        self.Center()
 
########################################################################
class Main(wx.App):
    """"""
 
    #----------------------------------------------------------------------
    def __init__(self, redirect=False, filename=None):
        """Constructor"""
        wx.App.__init__(self, redirect, filename)
        dlg = MainFrame()
        dlg.Show()
 
#----------------------------------------------------------------------
if __name__ == "__main__":
    app = Main()
    app.MainLoop()