public static RGNDATAHEADER Create(Rectangle region, int rectangleCount)
{
RGNDATAHEADER header = new RGNDATAHEADER();
header.dwSize = Marshal.SizeOf(typeof(RGNDATAHEADER));
header.iType = RegionDataHeaderTypes.Rectangles;
header.rcBound = region;
header.nCount = rectangleCount;
return(header);
}
public unsafe RECT[] GetRegionRects()
{
uint regionDataSize = GetRegionData(Handle, 0, IntPtr.Zero);
if (regionDataSize == 0)
{
return(Array.Empty <RECT>());
}
byte[] buffer = ArrayPool <byte> .Shared.Rent((int)regionDataSize);
fixed(byte *b = buffer)
{
if (GetRegionData(Handle, regionDataSize, (IntPtr)b) != regionDataSize)
{
return(Array.Empty <RECT>());
}
RECT[] result = RGNDATAHEADER.GetRegionRects((RGNDATAHEADER *)b);
ArrayPool <byte> .Shared.Return(buffer);
return(result);
}
}