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A problem about bitmap

Started by Shawn1984 Apr 11, 2006 at 9:51 AM 1 reply 300+ views

Original Post

Shawn1984

Apr 11, 2006 at 9:51 AM

I'm encountering a bitmap and its biSizeImage does not equl to biWidth * biHeight * biBitCount/8. It's a 8 bit bitmap with a palette.Could anyone point out where is the problem?thanks a lot

Emmanuel Deloget

431

Emmanuel Deloget

Apr 11, 2006 at 9:56 AM

biSizeImage is equal to pitch * height * bpp/8, where pitch is the smallest multiple of 4 that is greater or equal to width. You can easily compute the pitch using the simple formula in C/C++:

pitch = ((width + 3) & (~3));

HTH,

Shawn1984

Author

Shawn1984

Apr 11, 2006 at 10:24 AM

Thanks a lot.You solve my confusion.You rock!

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