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## Sizes
You can set the `width` and `height` of widgets in guizero.
Widgets are sized by either pixels or characters depending on the widget and what it contains.
Some widgets size can also be set to `"fill"` where it will use up all of the available space.
``` python
from guizero import App, PushButton, Slider, ListBox
app = App()
# A PushButton's size is noted in characters
button = PushButton(app, width=30, height=5)
# A Slider's size is noted in pixels
slider = Slider(app, width=300, height=30)
# Some widgets such as ListBox can also be told to fill all the available space
listbox = ListBox(app, width="fill", height="fill")
app.display()
```
| Widget | Characters or Pixels | Fill | Notes |
|----------------------------------------|----------------------|------|------------------------------------------------------------------------|
| [Box](box.md) | Pixels | Yes | If a Box is sized in Pixels, both width and height must be specified. |
| [ButtonGroup](buttongroup.md) | Characters | Yes | The height of a ButtonGroup must divide by the number of buttons in it |
| [CheckBox](checkbox.md) | Characters | Yes | |
| [Combo](combo.md) | Characters | Yes | |
| [ListBox](listbox.md) | Pixels | Yes | |
| [Picture](picture.md) | Pixels | No | See [Images](images.md) for more information |
| [PushButton](pushbutton.md) | Characters | Yes | |
| [PushButton](pushbutton.md) with image | Pixels | No | PushButton's which have images are sized in pixels |
| [Slider](slider.md) | Pixels | Yes | |
| [Text](text.md) | Characters | Yes | |
| [TextBox](textbox.md) | Characters | Yes | Only a TextBox's width can be set |
| [Waffle](waffle.md) | Pixels | No | |
|
