Tkinter入门
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# Options

The oval item supports the following options, via the `create_oval` method, and the `itemconfig` and `itemcget` configuration methods.

Table 18-1. Canvas Oval Options

Option | Type | Description
--- | --- | ---
`fill` | color | The color to use for the interior. If an empty string is given, the interior is not drawn. Default is empty (transparent).
`stipple` | bitmap | The name of a bitmap which is used as a stipple brush when filling the oval's interior. Typical values are "gray12", "gray25", "gray50", or "gray75". Default is a solid brush (no bitmap). As of Tk 8.0, the stipple option is ignored on the Windows platform. To draw stippled ovals, you have to create corresponding polygons.
`outline` | color | The color to use for the outline. If an empty string is given, the outline is not drawn. Default is "black".
`width` | distance | The width of the outline. Default is 1 pixel.
`tags` | tuple | One or more tags to associate with this item. If only a single tag is to be used, you can use a single string instead of a tuple of strings.

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