PNG not transparent on lazarus
lazarus / 10-Designer

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neodivx · 2006-12-16 13:49

Hi alls,

first of all, this is my first post for lazarus, and so, i would like
to thanks all the people who's working on this projet: this is a very
great projet, make me feel beter for the pascal futur  ( borland is so
changing this time.... )

for my problem, it's look not good:
I have some png to use like background.

let's take a stupid example:

http://www.neodivx.be/neodivx/images/testpng.png ( the image doesn't
look transparent on IE, but if you load it on photoshop, you'll see
this is a transparent background )

in delphi 2006, i load this png in a resource data. I use the
componant from here: http://pngdelphi.sourceforge.net/.
The png is transparent, and working pretty well

In lazarus, i've try the same: the soft is crashing ( sorry this is in
french: I translate as i can: Impossible to create a flux
Form1:TForm1: Invalid horizontal pixel index -1 ): For the one i can
call, it's just not working, the transparency is not working ( we see
a bad color in the background )

i have try ( with the image witch working ) to add the following code:

Code:

  Form1.Brush.Style:=bsClear;
  Form1.BorderStyle:=bsNone;



doesn't work beter

i hope you can help

thanks a lot folks

( i don't know where to post, so i post here: the problem is on
windows xp ;-) )

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Marc · 2006-12-18 10:23

please bugrep this, bugs posted her will be forgotten.