输入控件

Qt Quick Controls 2 offers a variety of input controls for both numeric and textual input.

ComboBox	Combined button and popup list for selecting options
Dial	Circular dial that is rotated to set a value
RangeSlider	Used to select a range of values by sliding two handles along a track
Slider	Used to select a value by sliding a handle along a track
TextArea	多行文本输入区域
TextField	单行文本输入字段
Tumbler	Spinnable wheel of items that can be selected

Each type of input control has its own specific target use case. The following sections offer guidelines for choosing the appropriate type of input control, depending on the use case.

ComboBox Control

ComboBox is used to select a value from a static multiple-line drop-down list. It is not possible to add new values, and only one option can be selected.

Recommendations:

If the number of values is very large, consider applying a filter.
If the list is very limited, consider using RadioButton . This has the advantage that the user can see all options at the same time.
Select a default value, the value that will be chosen most often.

另请参阅 CheckBox Control , Tumbler Control .