Common Widget FeaturesΒΆ The following details apply to all types of Widgets. Overview API Conventions Basic Attributes Widget-Specific Attributes Widget Creation Widget Deletion Widget Tree Parents and Children Names Screens Creating Screens Active Screen Loading Screens API Position and Size Important Notes Boxing Model Static Positioning Dynamic Positioning Static Sizing Dynamic Sizing Min and Max Size Translate Position Transform Size DPI Independent Unit Parts and States Parts States Layers Order of Creation API Styles Styles Overview Style Sheets Local Styles Transitions Themes Style Properties Events Adding Events to a Widget Removing Event(s) from Widgets Event Codes Sending Events Manually Fields of lv_event_t Event Bubbling Event Trickle Examples API Flags Adding and/or Removing Multiple Flags Layouts Overview Flex Grid Scrolling Overview Features of Scrolling Scrolling Programmatically Self Size Examples API