QS about iphone CGImageCreate and data from standard BMP bits? wrong result

Question

hi,everybody:
i have a gdi engine that result in the standard bmp bits stream ,and now i wanna to display it by the CG in iphone , i use it like this:
<code>
// size -> image size // rect -> current view rect //pBits -> the BITMAPINFO image bits stream
long imgSizePerRow = ((long)(24 * size.width + 31) / 32) * 4;
CGDataProviderRef providerRef = CGDataProviderCreateWithData(NULL, pBits, imgSizePerRow * size.height, NULL);
CGColorSpaceRef colorSpaceRef = CGColorSpaceCreateDeviceRGB();//
CGImageRef imageRef = CGImageCreate(size.width, size.height,
8, 24, //bitsPerComponent //bitsPerPixel
imgSizePerRow,
colorSpaceRef, kCGBitmapByteOrderDefault , providerRef,
NULL, YES, kCGRenderingIntentDefault);
CGContextDrawImage(context, rect, imageRef);
CGImageRelease(imageRef);
CGColorSpaceRelease(colorSpaceRef);
CGDataProviderRelease(providerRef);
</code>
attention: i check the row pixel fit to the times of 4
My gdi generate the bits stream , in this case , R8G8B8 format , no alpha channel ,i use this for CGDataProviderRef and draw the CGImage to my view. it is strange that the image's color seems change, yet the whole shape seems ok , i save the bits stream by BITMAP FORMAT to a file before, and make a contrast , everything seems ok just the whole color space.

Answer 1

**** it , i got the wrong sequence of pixel sequcence, the standard BITMAP stream is B-G-R,
YET the mac's core Image is like B-G-R . THAT'S OK !