private static extern System.Int32 SHFileOperation(ref SHFILEOPSTRUCT lpFileOp);
// Prepare an SHFILEOPSTRUCT for use, using the properties of this object:
private void Prepare(ref SHFILEOPSTRUCT SH, foFileOperation fileOperation, string[] from, string[] to)
{
// Set Any operation Aborted to FALSE:
SH.fAnyOperationsAborted = 0;
// No name mappings wanted (TODO)
SH.hNameMappings = System.IntPtr.Zero;
// Set the parent form handle:
if (parentForm == null)
{
SH.hWnd = System.IntPtr.Zero;
}
else
{
SH.hWnd = parentForm.Handle;
}
// SH.lpszProgressTitle = m_sTitle; -- not supported
// Set the flags, add FOR_NOCONFIRMATION if necessary:
SH.fFlags = this.flags;
if (this.noConfirmation)
{
SH.fFlags |= (ushort)foFileOperationFlag.FOF_NOCONFIRMATION;
}
// Build the to and from names from the arrays. Each should be a list of \0-terminated names
// with a final \0 terminator at the very end.
string fromFile = "";
foreach (string file in from)
{
fromFile += file + "\0";
}
fromFile += "\0";
SH.pFrom = fromFile;
// If not deleting, we need another list, this time the To list:
if (fileOperation != foFileOperation.FO_DELETE)
{
if (to != null)
{
string toFile = "";
foreach (string file in to)
{
toFile += file + "\0";
}
toFile += "\0";
SH.pTo = toFile;
}
}
// Indicate we're using multiple names, if
// 1) we have more than one TO file or
// 2) we do NOT have a backslash at the end of the only TO file
if ((to != null && to.Length > 0) || (to != null && to.Length == 1 && !to[0].EndsWith("\\")))
{
SH.fFlags |= (ushort)foFileOperationFlag.FOF_MULTIDESTFILES;
}
// Set the function code:
SH.wFunc = (System.UInt32)fileOperation;
}
