partially transparent sprites

[sludge]

I want to be able to display a sprite on the screen and have certain parts of that sprite be transparent.

Let me explain by example.  Suppose that I have a picture of a stick figure.  If I were to load this picture into sfml as an image, set it to sprite, define its subrect, and then display the resulting sprite, I would see a white box with a stick figure in it above my background.

I want the white areas of the sprite to be transparent so that only the stick-figure part of the subrect is rendered.  The background will then appear where the white parts were previously.

I'm sure there is a simple solution to this problem... Any ideas?

[dunce]

class Image has this method:

Code: [Select]

void  CreateMaskFromColor (const Color &color, Uint8 alpha=0)
  Create a transparency mask from a specified colorkey.

Create a mask from white colored area for the image your sprite uses and this part of the sprite will become transparent.

[sludge]

that worked like a charm.  Thank you