public CoreGroup[] GetGroup(uint startFrom, uint size)
{
uint groupSize = GetGroupSize();
if (groupSize > startFrom)
{
object groupObject = new CoreDll.adGroup();
int sizeOfGroup = Marshal.SizeOf(groupObject);
size = Math.Min(groupSize - startFrom, size);
byte[] buffer = new byte[sizeOfGroup * size];
CoreGroup[] groups = new CoreGroup[size];
UIntPtr[] pStartFrom = new UIntPtr[1];
pStartFrom[0] = new UIntPtr(startFrom);
UIntPtr[] pSize = new UIntPtr[1];
pSize[0] = new UIntPtr(size);
if (m_dll.adGroupGet(m_handle, Marshal.UnsafeAddrOfPinnedArrayElement(pStartFrom, 0),
Marshal.UnsafeAddrOfPinnedArrayElement(buffer, 0),
Marshal.UnsafeAddrOfPinnedArrayElement(pSize, 0)) == CoreDll.Error.Ok)
{
for (uint i = 0; i < pSize[0].ToUInt32(); ++i)
{
IntPtr pGroup = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, (int)(i * sizeOfGroup));
CoreDll.adGroup group = (CoreDll.adGroup)Marshal.PtrToStructure(pGroup, groupObject.GetType());
groups[i] = new CoreGroup(ref group, this);
}
}
return(groups);
}
return(null);
}