Difference between revisions of "TDBImage"
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== Overview == | == Overview == | ||
TDBImage is a data-bound control that shows images stored in BLOB fields in databases. | TDBImage is a data-bound control that shows images stored in BLOB fields in databases. | ||
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+ | == Documentation == | ||
+ | Official documentation can be found at: | ||
+ | [[doc:/lcl/dbctrls/tdbimage.html]] | ||
== Storage == | == Storage == | ||
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Delphi only allows a single file format (jpg?). Recent Lazarus versions allow this storage format as well and try to autodetect the image type based on magic data in the beginning of the binary data. | Delphi only allows a single file format (jpg?). Recent Lazarus versions allow this storage format as well and try to autodetect the image type based on magic data in the beginning of the binary data. | ||
− | See: | + | See also: the documentation and the Lazarus 1.2 and 1.4 release notes. |
== Demonstration == | == Demonstration == |
Revision as of 21:00, 4 September 2014
Overview
TDBImage is a data-bound control that shows images stored in BLOB fields in databases.
Documentation
Official documentation can be found at: doc:/lcl/dbctrls/tdbimage.html
Storage
By default, Lazarus stores the binary image data preceded by the file extension to define the file type. This allows storing multiple image formats at will.
Delphi only allows a single file format (jpg?). Recent Lazarus versions allow this storage format as well and try to autodetect the image type based on magic data in the beginning of the binary data. See also: the documentation and the Lazarus 1.2 and 1.4 release notes.
Demonstration
See e.g. the sqlite_mushrooms/image_mushrooms example program in your Lazarus directory examples\database\