multiline checkbox in wxpython
Question: I'm working with wxpython (2.8) with python 2.5. is it possible to force a
wx.CheckBox to display its label on multiple lines? I'd like to be able to do
the same as wx.StaticText.Wrap(width)

See the attached example: the wx.CheckBox is 200 px wide, but it's label does
not fit in this space.

Any help is really appreciated! Thanks a lot Mauro

    
    
    #example starts here
    
    import wx
    
    
    class MyFrame(wx.Frame):
       def __init__(self):
           wx.Frame.__init__(self,  None, title="Hello World", size=
    (300,200))
    
           self.panel = wx.Panel(self,  -1)
           myVSizer = wx.BoxSizer(wx.VERTICAL)
    
           #instantiating a checkbox 200 px wide. but the label is too
    long
           cb = wx.CheckBox(self.panel,  -1,  label="This is a very very
    long label for 200 pixel wide cb!",  size =wx.Size(200, -1))
    
           myVSizer.Add( cb, 1)
    
           self.panel.SetSizer(myVSizer)
           myVSizer.Layout()
    
    
    app = wx.App(redirect=True)
    top = MyFrame()
    top.Show()
    app.MainLoop()
    


Answer: what about something like this? Flex! (I've made it a radio button to show
that it still behaves like one)

    
    
    import wx
    import textwrap
    
    class MultilineRadioButton(wx.RadioButton):
            def __init__(self, parent, id=-1, label=wx.EmptyString, wrap=10, pos=wx.DefaultPosition, size=wx.DefaultSize, style=0, validator=wx.DefaultValidator, name=wx.RadioButtonNameStr):
                wx.RadioButton.__init__(self,parent,id,'',pos,size,style,validator,name)
                self._label = label
                self._wrap = wrap
                lines = self._label.split('\n')
                self._wrappedLabel = []
                for line in lines:
                    self._wrappedLabel.extend(textwrap.wrap(line,self._wrap))
    
                self._textHOffset = 20
                dc = wx.ClientDC(self)
                font = wx.SystemSettings.GetFont(wx.SYS_DEFAULT_GUI_FONT)
                dc.SetFont(font)
                maxWidth = 0
                totalHeight = 0
                lineHeight = 0
                for line in self._wrappedLabel:
                    width, height = dc.GetTextExtent(line)
                    maxWidth = max(maxWidth,width)
                    lineHeight = height
                    totalHeight += lineHeight 
    
                self._textHeight = totalHeight
    
                self.SetInitialSize(wx.Size(self._textHOffset + maxWidth,totalHeight))
                self.Bind(wx.EVT_PAINT, self.OnPaint)
    
            def OnPaint(self, event):
                dc = wx.PaintDC(self)
                self.Draw(dc)
                self.RefreshRect(wx.Rect(0,0,self._textHOffset,self.GetSize().height))
                event.Skip()
    
            def Draw(self, dc):
                dc.Clear()
                font = wx.SystemSettings.GetFont(wx.SYS_DEFAULT_GUI_FONT)
                dc.SetFont(font)
                height = self.GetSize().height
                if height > self._textHeight:
                    offset = height / 2 - self._textHeight / 2
                else:
                    offset = 0
                for line in self._wrappedLabel:
                    width, height = dc.GetTextExtent(line)
                    dc.DrawText(line,self._textHOffset,offset)
                    offset += height
    
    
    class HFrame(wx.Frame):
       def __init__(self,pos=wx.DefaultPosition):
           wx.Frame.__init__(self,None,title="Hello World",size=wx.Size(600,400),pos=pos)
    
           self.panel = wx.Panel(self,-1)
           sizer = wx.BoxSizer(wx.HORIZONTAL)
    
           cb = RadioButton(self.panel,-1,label="This is a very very long label for the control!",wrap=10)
           sizer.Add(cb,1)
    
           cb = RadioButton(self.panel,-1,label="This is a very very long label for the control!",wrap=10)
           sizer.Add(cb,1)
    
           cb = RadioButton(self.panel,-1,label="This is a very very long label for the control!",wrap=10)
           sizer.Add(cb,1)
    
           self.panel.SetSizer(sizer)
           sizer.Layout()
    
    
    class VFrame(wx.Frame):
       def __init__(self,pos=wx.DefaultPosition):
           wx.Frame.__init__(self,None,title="Hello World",size=wx.Size(600,400),pos=pos)
    
           self.panel = wx.Panel(self,-1)
           sizer = wx.BoxSizer(wx.VERTICAL)
    
           cb = RadioButton(self.panel,-1,label="This is a very very long label for the control!",wrap=10)
           sizer.Add(cb,1)
    
           cb = RadioButton(self.panel,-1,label="This is a very very long label for the control!",wrap=10)
           sizer.Add(cb,1)
    
           cb = RadioButton(self.panel,-1,label="This is a very very long label for the control!",wrap=10)
           sizer.Add(cb,1)
    
           self.panel.SetSizer(sizer)
           sizer.Layout()
    
    
    app = wx.App(redirect=False)
    htop = HFrame(pos=wx.Point(0,50))
    htop.Show()
    vtop = VFrame(pos=wx.Point(650,50))
    vtop.Show()
    app.MainLoop()
    

