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bricks/dist/docs/zh/keypress.md
yumoqing 1291f7fee3 fix: UiCode build_options uses valueField/textField fallback to 'value'/'text' 
When valueField/textField are not explicitly set in opts, the auto-select
logic (line 1140) and nullable empty-option creation (lines 1144-1145) used
data[0][undefined] which returned undefined, causing:
- Single-option selects to show blank (auto-select failed)
- nullable empty options to have undefined keys

Now extracts vf/tf local variables with ||'value'/||'text' fallback at the
top of build_options(), used consistently throughout.
2026-05-29 23:03:52 +08:00

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KeyPress

控件功能：监听键盘按键事件，当用户按下任意键时，清除当前内容并显示按下的键名。
类型：容器控件
父类控件：VBox

初始化参数

  • 无特殊初始化参数，继承自 bricks.VBox 的通用参数（如布局相关选项等）。

主要事件

  • keydown：绑定全局键盘按下事件，触发 key_handler 方法处理按键逻辑。
    在该事件中获取 event.key 值，并动态创建显示按键信息的文本控件。