选择颜色,初始化颜色组,初始化块组,显示主体颜色块,是否在块内,CreateCompatibleDC,CreateSolidBrush,FillRect,FrameRect,SelectObject,StretchBlt,CreateCompatibleBitmap,DeleteDC,CreatePen,LineTo,MoveToEx,BitBlt,ReleaseDC,DeleteObject,GetDC