TCheckItemEvent procedure type
Specifies an event handler is to determine if the specified Item is checked.
Declaration
TCheckItemEvent = function(Item: TObject): Boolean of objectArguments
Item | Object examined in the method. |
Function result
True when the item is checked.Description
TCheckItemEvent specifies an event handler that can be used only
for items that have a checkbox. Returns
True when the item is checked.
It will be necessary to cast the object instance in Item to the correct data
type in the event handler to access properties introduced in a
TObject descendant.
TCheckItemEvent is the type used to implement the OnCheckItem
event handler in TCustomControlFilterEdit.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.