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Re: png images in tool-bar / alpha mask

From: YAMAMOTO Mitsuharu
Subject: Re: png images in tool-bar / alpha mask
Date: Sun, 06 Apr 2008 23:09:59 +0900
User-agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shij┼Ź) APEL/10.6 Emacs/23.0.50 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)

>>>>> On Sun, 6 Apr 2008 14:42:08 +0100, David Reitter <address@hidden> said:

>> This is not the only place where NULL-check of img->mask is used
>> for determining the existence of the image mask.  At least, xdisp.c
>> and macterm.c also assume that.

> Yes, but doesn't that happen in order to check whether there is a
> bitmap mask that will be used for something?

Did you seriously test your own patch?  You'll see the previous
contents unerased under the alpha channel part because filling with
the background color is done only when the image is considered to have
a mask.

                                     YAMAMOTO Mitsuharu

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