ImageMan ActiveX
GIF Image Format

Description

A bit-mapped graphics file format used by the Web, CompuServe and many bulletin boards. GIF supports color and various resolutions. It also includes data compression, but because it is limited to 256 colors, it is more effective for scanned images such as illustrations than color photos.

Import Library

im8gif.dil

Export Library

 im8xgif.del

Remarks

This release supports loading and saving 1, 4, and 8 bit interlaced and non-interlaced GIF files.

 

Attributes

Name

Data Type

Notes

EXTENSION

String

"GIF"

COMMENT

String

False is overridden if TIFF_COMPRESS is defined

GIF_PLAINTEXT

String

Not automatically loaded.

Used for rendering plain text on image, not directly supported

GIF_APPEXT

Binary

This attribute is not automatically loaded.

We will write by default the Netscape extension for animated images on multi page images

 

GIF_INTERLACE

Boolean

Indicates how image is loaded

GIF_LOCALCOLOR

Boolean

Indicates if there is a local color table for a given frame

GIF_GLOBALCOLOR

Boolean

Indicates if there is a global color table present

GIF_GLOBALCOLORTABLE

Binary

This attribute is not automatically loaded. Actual global color table data

GIF_SD

Binary

Screen Descriptor

GIF_SD_WIDTH

Int16

Bounding box width for all images

GIF_SD_HEIGHT

Int16

Bounding box height for all images

GIF_BGCOLOR

Int32

Background color for all images

GIF_GCE

Binary

Graphic Control Extension

GIF_GCE_TRANSIDX

Int8

Transparency Index for individual frame

GIF_GCE_DELAY

Int16

Delay in milliseconds for individual frame

GIF_GCE_TRANS

Binary

Indicates whether to apply transparency

GIF_GCE_DISPOSAL

Int8

Disposal method for frame of gif image

GIF_ID

Binary

Image Descriptor

GIF_ID_LEFT

Int16

Frame offset for the left

GIF_ID_TOP

Int16

Frame offset for the top

GIF_ID_WIDTH

Int16

Frame width

GIF_ID_HEIGHT

Int16

Frame height

 

 

 

 

 


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