问题
I have the following code :
myList =['a','b']
rb=wx.RadioBox(self.panel, -1, "Options :", (0, 0), wx.DefaultSize,myList, 2, wx.RA_SPECIFY_COLS)
When it renders first time I see that a choice has been made how can I change the code that when this radibox rendered first time there are no option has been chosen.
回答1:
The use of a radio box implies, "there is a list of two or more options that are mutually exclusive and the user must select exactly one choice."
The radio box never exists in a state with no choice made. If that's not the case, then don't use a radio box.
If you don't want any of the current radio box options to be selected as default, add another option for "N/A" or "No choice".
回答2:
If your really need to do this then probably the only way is to create your own RadioBox. A RadioBox can easily built from a Panel, StaticBox, StaticBoxSizer and of course RadioButtons.
In the __init__ for your RadioBox use the RadioButtons SetValue() method to set the initial value of the RadioButtons to False.
Take a look at RadioButton demo in the wxpython Demos, there should be enough there to get you started in the right direction.
回答3:
If you just want initial selection invisible, you can have a try with ShowItem(item, show=True)
example here:
myList =['','a','b']
rb=wx.RadioBox(self.panel, -1, "Options :", (0, 0), wx.DefaultSize,myList, 2, wx.RA_SPECIFY_COLS)
rb.ShowItem(0, show=False)
回答4:
Call the the radiobox SetSelection method with a parameter value of -1
来源：https://stackoverflow.com/questions/3691897/how-to-remove-initial-wx-radiobox-selection