menu
fluent_ui package
documentation
fluent_ui.dart
DropDownButton
onOpen property
onOpen property
dark_mode
light_mode
onOpen
property
VoidCallback
?
onOpen
final
Called when the flyout is opened
Implementation
final VoidCallback? onOpen;
fluent_ui package
documentation
fluent_ui
DropDownButton
onOpen property
DropDownButton class