[lazarus] Wrong colours in win32

[Micha Nelissen]

Mattias Gaertner wrote:

> On Sat, 13 Dec 2003 18:07:28 +0100  Micha Nelissen <micha at neli.hopto.org>
> wrote:
> 
> 
>>Vincent Snijders wrote:
>>
>>
>>>On Sat, 13 Dec 2003 17:34:51 +0100
>>>Micha Nelissen <micha at neli.hopto.org> wrote:
>>>
>>>>Is there a way to get the lazarus logo as file, lazarus.xpm or so?
>>>>Then I can make a seperate test app, debugging the ide is quite a lot
>>>>of code ;-).
>>>>
>>>>Micha.
>>>
>>>See lazarus/images/splash_logo.xpm and
>>>lazarus/images/lazarus_about_logo.xpm.
>>
>>Thanks for the hint. It seems this is a paletted image, is that right? 
> 
> 
> Yes. XPM has always a palette.
> 
> 
> 
>>Does this indicate a failure in fpimage to load paletted images? 
> 
> 
> No. see below.
> 
> 
> 
>>I assume it does work in gtk?
> 
> 
> Yes. 
> 
> 
> To reduce the confusion:
> fpImage splitts and modularizes the reading/writing of images. 
> For example the XPM reader parses a stream and converts each pixel into a
> TFPColor, to call SetPixel for each pixel. So, this conversion is XPM ->
> TFPColor (48bit depth). Theoretically XPM supports more than 48 bit depth,
> but practically not, therefore this conversion is lossless.
> The TLazIntfImage overrides the SetPixel method and sets the pixel according
> to the RawImage format. This can result in loss of color information.
> 
> So, yes, the splash logo is paletted, and no, fpImage has no problem with
> it.
> When you save an XPM, the palette is created on the fly.

Ok. My hunt continues... ;-)

Micha.