BitBlt(); 's parameters

I'm making a memory HDC( screen buffer) and I understand everything excepthow to use BitBlt(); . I looked on MSDN \and it says its parameter's but most of them are coordnates and all. How would I find out what these coordinates are with 2 compatiable DCs(made using CreateCompatableDC(); .) Any help is much apprieciated.

Thanks,
Isometric

If your buffer is the same dimensions as your client area, then you'll want to do

BitBlt(hdcDest,0,0,clientwidth,clientheight,hdcSrc ,0,0,SRCCOPY);

Thank you very much

Can also use

GetObject()

with

HGDIOBJ = Your bitmap;
int = sizeof(BITMAP);
BITMAP = &Bitmap

BITMAP is a structure that will be filled with the details of the bitmap including width and height.