public IDLWrapper GetItem(int idx, bool noAppend = false)
{
using (FVWrapper w = GetFolderView()) {
if (w == null)
{
return(null);
}
IntPtr ppidl = IntPtr.Zero;
try {
w.FolderView.Item(idx, out ppidl);
if (noAppend || ppidl == IntPtr.Zero)
{
return(new IDLWrapper(ppidl));
}
using (IDLWrapper path = GetShellPath(w.FolderView)) {
return(new IDLWrapper(PInvoke.ILCombine(path.PIDL, ppidl)));
}
}
finally {
if (ppidl != IntPtr.Zero && !noAppend)
{
PInvoke.CoTaskMemFree(ppidl);
}
}
}
}
public bool SelectionAvailable()
{
using (FVWrapper w = GetFolderView()) {
int items;
return(w != null && w.FolderView.ItemCount(1, out items) == 0);
}
}
public IDLWrapper GetShellPath()
{
using (FVWrapper w = GetFolderView()) {
return(w == null
? new IDLWrapper(IntPtr.Zero)
: GetShellPath(w.FolderView));
}
}
public int GetSelectedCount()
{
int count;
using (FVWrapper w = GetFolderView()) {
w.FolderView.ItemCount(1, out count);
}
return(count);
}
public void SelectItem(int idx)
{
using (FVWrapper w = GetFolderView()) {
if (w != null)
{
w.FolderView.SelectItem(idx, 29);
/* SVSI_SELECT | SVSI_DESELECTOTHERS | SVSI_ENSUREVISIBLE | SVSI_FOCUSED */
}
}
}
public int GetFocusedIndex()
{
using (FVWrapper w = GetFolderView()) {
int focusedIndex;
if (w.FolderView.GetFocusedItem(out focusedIndex) == 0)
{
return(focusedIndex);
}
}
return(-1);
}
public int GetItemCount()
{
int count;
using (FVWrapper w = GetFolderView()) {
if (w == null)
{
return(0);
}
w.FolderView.ItemCount(2, out count);
}
return(count);
}
public IEnumerable <IDLWrapper> GetItems(bool selectedOnly = false, bool noAppend = false)
{
Guid guid = ExplorerGUIDs.IID_IEnumIDList;
IEnumIDList list = null;
try {
using (FVWrapper w = GetFolderView())
using (IDLWrapper path = noAppend ? null : GetShellPath(w.FolderView)) {
if (w == null)
{
yield break;
}
w.FolderView.Items(0x80000000 | (selectedOnly ? 1u : 2u), ref guid, out list);
if (list == null)
{
yield break;
}
IntPtr ptr;
while (list.Next(1, out ptr, null) == 0)
{
using (IDLWrapper wrapper1 = new IDLWrapper(ptr)) {
if (!wrapper1.Available)
{
continue;
}
if (noAppend)
{
yield return(wrapper1);
}
else
{
using (IDLWrapper wrapper2 = new IDLWrapper(PInvoke.ILCombine(path.PIDL, wrapper1.PIDL))) {
yield return(wrapper2);
}
}
}
}
}
}
finally {
if (list != null)
{
Marshal.ReleaseComObject(list);
}
}
}
public IDLWrapper GetShellPath()
{
using (FVWrapper w = GetFolderView()) {
return(GetShellPath(w.FolderView));
}
}
