Structure Formats BMP


Well, thats about to learn. After BITMAPFILEHEADER structures and BITMAPINFOHEADER is palette. Moreover, if the Format bespalitrovy, it may not be, however, count on it not. The fact is that when I started to deal with Formatom bmp, in one book I read that supposedly if bespalitrovy Format, then it is not at all palettes. There were even two pictures - Formata schemes: one with the palette, the other without. And this time I wrote a program that operates on a hard bmp-Skum. And I had to convert the incoming images from the 256 colors in 24-bit (if any) to the temporary file. And I'm in a 24-bit palette just created (bfOffBits of structure BITMAPFILEHEADER I was equal to the sum sizeof (BITMAPFILEHEADER) + sizeof (BITMAPINFOHEADER), and included a 24-bit left unchanged.

Palette is a structure array RGBQUAD going after each other. Even if the panel does not use all the color (and only, for example, 16), it is often still a palette assign 256 fields. A 256 * 4 = 1024, where the 4 - the size of the structure RGBQUAD, that is, and get the same one kilobyte.

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