C# (CSharp) RECT.AsSpanの例

コード例 #1

        public unsafe static        RECT[] GetRectsFromRegion(Gdi32.RGNDATAHEADER *regionData)
        {
            int count;

            if (regionData is null || (count = (int)regionData->nCount) == 0)
            {
                return(Array.Empty <RECT>());
            }

            var regionRects = new RECT[count];

            Span <RECT> sourceRects = new Span <RECT>((byte *)regionData + regionData->dwSize, count);

            sourceRects.CopyTo(regionRects.AsSpan());

            return(regionRects);
        }