如何将现有内存缓冲区包装为GDI的DC

I have a memory buffer corresponding to my screen resolution (1280x800 at 24-bits-per-pixel) that contains my screen contents at 24bpp. I want to convert this to 8-bpp (ie. Halftone color palette in Windows). I currently do this: 1. Use CreateDIBSection to allocate a new 1280x800 24-bpp buffer and access it as a DC, as well as a plain memory buffer 2. Use memcpy to copy from my original buffer to this new buffer from step 1 3. Use BitBlt to let GDI perform the color conversionI have a memory buffer corresponding to my scre