[Dev-C++] Tranparent backgrounds

[dx F. <vin...@ed...>]

Ive seen it before... and now I want to know how exactly that works. Some applications draw bitmaps on the screen, with part of it transparent... either completely or not.

These programs can actually draw(paint) a bitmap with a transparency color! All they have to do is replace a specific color into a transparent color and then voom! you can see your wall paper right through the interior of the window. Does anyone know how I can do this?

For example... we take a square, or any shape drawn in a  bitmap file. The square (or any shape) is colored blue and its background red. How will I be able to draw the square (or any shape) on the screen whithout actually drawing the red background of the bitmap?

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