TCustomCheckListBox.State property
Provides indexed access to the TCheckBoxState for Items in the control.
Declaration
property State[AIndex: Integer]: TCheckBoxState read GetState write SetState;Description
State is an indexed
TCheckBoxState property which
provides access to the check box state for Items in the control. The
TCheckBoxState enumeration value indicates whether the specified
item is in a Checked, Unchecked, or Grayed state.
Reading the value in State causes the CheckIndex method to be
called to validate the value in AIndex. If a handle has been allocated for
the control, the GetState method in the widget set class is called to get the
value for the property. Otherwise, the cached item data for the control is
examined to get the value for the property.
Setting the value in State causes the CheckIndex method to be
called to validate the value in AIndex. If a handle has been allocated for
the control, the SendItemState method is called to set the value
for the property in the widget set class. Otherwise, the cached item data for
the control is updated with the new property value.
Use Checked to get or set the check box state for an item in the
control using a Boolean value. Use CheckAll to set the
check box state for all Items in the control. Use Toggle to select
the next check box state for an item in the control.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.