Dropdown Setting Control Widget

## Dropdown Setting Control Widget

### Definition
It is a Graphical User Interface (GUI) widget that allows users to select one or more values from a predefined list of options. It is usually displayed in a collapsed form, and the list of options expands when clicked or hovered. Currently, Zhunyi Visual Design only supports single-selection combo boxes.

### Attributes
Basic information, coordinate size, minimum width and height, maximum width and height, and permissions are consistent with the image widget. Please verify the relevant introduction of [Image Widget](/doc/621).

### Data Configuration
Configure the data source for the combo box options. Generally, they are integer types, and the subscript numbering starts from 0. Provide corresponding text list editing, the system automatically increases from 0 in ascending order. For parameters in the module that are in the form of a drop-down list, you need to first go to the corresponding module to find the corresponding parameter function attribute to get the corresponding text list, and ensure that the order is consistent with the module parameters, otherwise there will be errors. The following is an example:

![](/media/202603//1772529902.935585.png)

After setting the text list, you can configure the current subscript. (This is usually applied in global variable data configuration. For module parameters, after data connection, the system will automatically generate a text list later and set the parameter subscript set by the current module as the current subscript. This part has not been implemented yet, please look forward to it!)

### Events - Selection Changed
Event triggered immediately after the option is changed. You can refer to the input completion event of [Integer Setting Widget](/doc/678).

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Click here to jump to the corresponding Chinese manual page: [Dropdown Setting Control Widget](/doc/350)