public OleDataObject(OleDataObjectItem[] selectedItems)
{
m_SelectedItems = selectedItems;
SetData(NativeMethods.CFSTR_FILEDESCRIPTORW, null);
SetData(NativeMethods.CFSTR_FILECONTENTS, null);
SetData(NativeMethods.CFSTR_PERFORMEDDROPEFFECT, null);
}
private MemoryStream GetFileDescriptor(OleDataObjectItem[] SelectedItems)
{
MemoryStream FileDescriptorMemoryStream = new MemoryStream();
// Write out the FILEGROUPDESCRIPTOR.cItems value
FileDescriptorMemoryStream.Write(BitConverter.GetBytes(SelectedItems.Length), 0, sizeof(UInt32));
Win32.NativeMethods.FILEDESCRIPTORW FileDescriptor = new Win32.NativeMethods.FILEDESCRIPTORW();
foreach (OleDataObjectItem si in SelectedItems)
{
FileDescriptor.cFileName = si.FileName;
Int64 FileWriteTimeUtc = si.WriteTime.ToFileTimeUtc();
FileDescriptor.ftLastWriteTime.dwHighDateTime = (Int32)(FileWriteTimeUtc >> 32);
FileDescriptor.ftLastWriteTime.dwLowDateTime = (Int32)(FileWriteTimeUtc & 0xFFFFFFFF);
FileDescriptor.nFileSizeHigh = (UInt32)(si.FileSize >> 32);
FileDescriptor.nFileSizeLow = (UInt32)(si.FileSize & 0xFFFFFFFF);
FileDescriptor.dwFlags = Win32.NativeMethods.FD_WRITESTIME | Win32.NativeMethods.FD_FILESIZE | Win32.NativeMethods.FD_PROGRESSUI;
// Marshal the FileDescriptor structure into a byte array and write it to the MemoryStream.
Int32 FileDescriptorSize = Marshal.SizeOf(FileDescriptor);
IntPtr FileDescriptorPointer = Marshal.AllocHGlobal(FileDescriptorSize);
Marshal.StructureToPtr(FileDescriptor, FileDescriptorPointer, true);
Byte[] FileDescriptorByteArray = new Byte[FileDescriptorSize];
Marshal.Copy(FileDescriptorPointer, FileDescriptorByteArray, 0, FileDescriptorSize);
Marshal.FreeHGlobal(FileDescriptorPointer);
FileDescriptorMemoryStream.Write(FileDescriptorByteArray, 0, FileDescriptorByteArray.Length);
}
return FileDescriptorMemoryStream;
}
private MemoryStream GetFileContents(OleDataObjectItem[] SelectedItems, Int32 FileNumber)
{
if (SelectedItems != null && FileNumber < SelectedItems.Length)
{
return SelectedItems[FileNumber].MemoryStream;
}
else
{
return null;
}
}