TLongWordField¶

Field class for 32-bit unsigned integer data.

Declaration¶

Source position: db.pas line 685

type

  TLongWordField = class(TNumericField)
  public
    constructor Create;
    function CheckRange : Boolean;
    property Value: LongWord; {rw}
  published
    property MaxValue: LongWord; {rwd}
    property MinValue: LongWord; {rwd}
  end;

Inheritance¶

Description¶

TByteField is instantiated when a dataset must manage a field with 32-bit unsigned data: the data type ftLongword. It overrides some methods of TField to handle LongWord data, and sets some of the properties to values for LongWord data. It also introduces some methods and properties specific to integer data such as MinValue and MaxValue.

It should never be necessary to create an instance of TLongWordField manually, a field of this class will be instantiated automatically for each integer field when a dataset is opened.

Properties¶

Member	Visibility	Description
MaxValue	published	Maximum field value.
MinValue	published	Minimum field value.
Value	public	Value as longword.

See all Properties

Methods¶

Member	Visibility	Description
CheckRange	public	Checkif a value is in the allowed range.
Create	public	Create new instance of TLongWordField.

See all Methods