How can I save TImage.PNG with transparent background?
lazarus / 39-Graphics

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Bananbl4 · 2011-02-08 11:05

When I set transparent color to image, it saves with color of form on
background.
So is my question := how can I save png with transparent color?

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Marc · 2011-02-08 23:33

The transparency of t a mask isn't passed as alpha channel to the PNG
iirc a rawimage has ways to convert a mask into an alpha channel.

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Bananbl4 · 2011-02-25 12:25

And, how can i load png file with background color and convert that
color to a transparency mask.
I am really dunno...

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circular · 2011-02-25 15:56

Do you mean that there are opaque pixels and one transparent color, or
do you mean that there are levels of opacity?

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Marc · 2011-02-26 18:46

Quote from: Bananbl4 on February 25, 2011, 01:25:46 pmAnd, how can i
load png file with background color and convert that color to a
transparency mask.
I am really dunno...

Set Masked := true and Set the MaskColor to the color you want to be
masked