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Field class for graphical BLOB field data
Source position: db.pas line 942
type TGraphicField = class(TBlobField) end; |
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public |
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constructor Create(); override; |
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Create a new instance of the TGraphicField class |
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Field class for graphical BLOB field data |
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Base class for BLOB field data |
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Provide access to the contents of a single field in a record |
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TGraphicField is the class used when a dataset must manage graphical BLOB data. (TField.DataType equals ftGraphic). It initializes some of the properties of the TField class. All methods to be able to work with graphical BLOB data have been implemented in the TBlobField parent class.
It should never be necessary to create an instance of TGraphicsField manually, a field of this class will be instantiated automatically for each graphical BLOB field when a dataset is opened.
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Base class for records-based data-access |
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Provide access to the contents of a single field in a record |
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Base class for BLOB field data |
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Base class for MEMO (text BLOB) field data |
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Field class for wide MEMO (widestring text BLOB) field data |