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I would like to replace a dialog's object dynamically but didn't find a way. The dialog is created with the help of a xrc definition file.

All what I found is https://www.blog.pythonlibrary.org/2012/05/05/wxpython-adding-and-removing-widgets-dynamically/: needs to access a sizer, but xrc does not provide access to sizer objects as far as I know.

Can anybody help?

My system: python 2.7, wxpython 3.0.2.0, win7

Best regards Humbalan

4

1 回答 1

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在 Goyo 的帖子的帮助下，我找到了以下解决方案：

def exchange_control( self, control, coded ) :
"""
Exchanges a wx.TextCtrl (where wx.TE_PASSWORD is set) with a wx.TextCtrl (where
wx.TE_PASSWORD is not set) and vice versa. A similar code could be used to exchange
for exampe a DirPickerCtrl with a FilePickerCtrl.

:param wx.TextCtrl control: Contains a coded or encoded text dependend on `coded`.
:param bool coded: True if the text in `control` is coded, False if it is encoded.

:returns: 
    A new wx.TextCtrl with the coded (`coded` was False) or encoded Text (`coded` was 
    True) of `control`.
:rtype: wx.TextCtrl
"""
    containing_sizer = control.GetContainingSizer() # get the sizer containing `control`

    # Compute arguments for a new TextCtrl. 
    # - The value of style is arbitrary except the TE_PASSWORD part. 
    # - a_validator is a validator checking correctness of the value of `control`, is 
    #   optional.
    kwargs = { 'parent'   : control.Parent,
               'id'       : wx.ID_ANY,
               'value'    : control.GetValue(),
               'size'     : control.Size,
               'style'    : wx.TE_NO_VSCROLL|wx.TE_PASSWORD if coded  else wx.TE_NO_VSCROLL,
               'name'     : control.Name,
               'validator': a_validator
             }

    # Setup a new TextCtrl with the arguments kwargs
    new_text_ctrl = wx.TextCtrl( **kwargs )

    containing_sizer.Replace( control, new_text_ctrl )
    containing_sizer.Layout()

    return new_text_ctrl

# In the calling code:
# The returned `the_text_ctrl` is the TextCtrl Field with the (en)coded Text and `coded` 
# is  the boolean value  which shows if the text whithin this field is coded or encoded. 
the_text_ctrl = self.exchange_control( the_text_ctrl, coded )

编辑：

我更改了代码，因为我发现方法 Replace() 比我的第一次尝试更容易使用。

于 2017-06-16T11:02:22.983 回答