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VC++
MFC Source Code: Read, Write and
Play GIF89A Gif image file, Example Download
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George
Tersaakov.
Note: Reading
and/or writing of GIF
images requires a license to use Unisys
patented Lempel Ziv Welch (LZW)
data compression and decompression
technology from Unisys.
GNU software states the
following:
"No license or
license fees are required for non-commercial,
not-for-profit GIF-based
applications or for non-commercial, not-for-profit GIF-freeware,
so long as the LZW
capability provided is only for GIF. However, a license is
required if freeware is incorporated into, or sold or
distributed with a commercial or for-profit product,
introduced in 1995 [or later], or enhancements of products
that were introduced prior to 1995."
More information can be
found at Unisys.
Description:
This Component
'Gif89a' was
created with VC++ 6.0
and ATL. You
don't need any DLL for using this control (even atl.dll
and mfc....dll). The source
code is provided.
This control has 7
properties and 3 methods and can be used to play
any animated gif file.
Properties of the
Control:
Filename - name of your GIF
file.
Autosize - control will
change size automatically when you load new GIF
image by setting Filename property.
Autostart - control will
show picture automatically when you set Filename property.
Speed - delay in 1/100
sec. If GIF itself doesn't has delay
control will use this
number.
Embed - when true control
will store GIF file in exe
module. You can use it only in dialog form when you create
this form with dialog editor.
Class - when false
control will paint empty space with background color of
OleContainer. If true then control
will not do it. Use this property only in case when you
have background bitmap.
Methods of the Control:
Stop - understandable.
Start - understandable.
About - you will see a
little dialog box with information about me.
Download
demo project and Control
- 191 KB
Download
source - 30 KB
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