Transparent color

[Mr. x]

Hello,

Does any bitmap picture has transparent color (by the left top dot of the
bitmap - anything with the same color is a transparent color), or there is
other thing I should declare in the bitmap.
(If I put it on an HTML page, or in a flash, etc ...)

Besides,
I want a good free tool for viewing and editing bitmaps (a little bit better
than the standard paint-brush), please.

Thanks

 

[Fabian]

Mr. x hu kiteb:

Hello,

Does any bitmap picture has transparent color (by the left top dot of
the bitmap - anything with the same color is a transparent color), or
there is other thing I should declare in the bitmap.
(If I put it on an HTML page, or in a flash, etc ...)

Besides,
I want a good free tool for viewing and editing bitmaps (a little bit
better than the standard paint-brush), please.

bitmaps do not have transparency. You need a gif or a png file for that.
I use any of:

paintbrush on windows XP handles gif format
MS Office photo editor
PSP 3
PSP 8

Doubtless others have suggestions for programs to use.

 

[Lasse Reichstein Nielsen]

Does any bitmap picture has transparent color

Generally, no. It requires that the image format contains information
about which colors are transparent.

The GIF format can mark one palette entry as transparent.

The PNG format can do that, or it can have a full alpha channel
(varying partial transparencey for each pixel). Microsoft refuses
to implement alpha-channels for the IMG tag, even though they
have a filter

 

[Lasse Reichstein Nielsen]

Does any bitmap picture has transparent color

Generally, no. It requires that the image format contains information
about which colors are transparent.

The GIF format can mark one palette entry as transparent.

The PNG format can do that, or it can have a full alpha channel
(varying partial transparencey for each pixel). Microsoft refuses
to implement alpha-channels for the IMG tag, even though they
have a filter (AlphaImageLoader) that loads it correctly.

The JPG format has no transparency information.

There are no other bitmap formats recommended for use on the web.

Besides,
I want a good free tool for viewing and editing bitmaps (a little bit better
than the standard paint-brush), please.

Try looking for Jasc Software's Paint Shop Pro. It used to be very usedful
in the 30 day trial period, but I haven't used it in years.

/L