public static int PopUpSystemContextMenu(List <string> lstPaths, Point pntShow, ref IContextMenu2 pIContextMenu2, IntPtr hwndParent)
{
IShellFolder ppv = null;
List <IntPtr> list = new List <IntPtr>();
try {
IntPtr ptr;
List <IntPtr> list2 = new List <IntPtr>();
foreach (IntPtr item in lstPaths.Select(PInvoke.ILCreateFromPath).Where(item => item != IntPtr.Zero))
{
list.Add(item);
list2.Add(PInvoke.ILFindLastID(item));
}
if ((list.Count == 0) || (PInvoke.SHBindToParent(list[0], ExplorerGUIDs.IID_IShellFolder, out ppv, out ptr) != 0))
{
return(-1);
}
IntPtr[] apidl = list2.ToArray();
uint rgfReserved = 0;
Guid riid = ExplorerGUIDs.IID_IContextMenu;
object obj2;
ppv.GetUIObjectOf(IntPtr.Zero, (uint)apidl.Length, apidl, ref riid, ref rgfReserved, out obj2);
if (pIContextMenu2 != null)
{
Marshal.ReleaseComObject(pIContextMenu2);
pIContextMenu2 = null;
}
pIContextMenu2 = obj2 as IContextMenu2;
if (pIContextMenu2 == null)
{
return(-1);
}
using (ContextMenu menu = new ContextMenu()) {
uint uFlags = 0;
if ((Control.ModifierKeys & Keys.Shift) == Keys.Shift)
{
uFlags |= 0x100;
}
pIContextMenu2.QueryContextMenu(menu.Handle, 0, 1, 0xffff, uFlags);
uint num3 = PInvoke.TrackPopupMenu(menu.Handle, 0x100, pntShow.X, pntShow.Y, 0, hwndParent, IntPtr.Zero);
if (num3 != 0)
{
CMINVOKECOMMANDINFO structure = new CMINVOKECOMMANDINFO();
structure.cbSize = Marshal.SizeOf(structure);
structure.fMask = 0;
structure.hwnd = hwndParent;
structure.lpVerb = (IntPtr)((num3 - 1) & 0xffff);
structure.lpParameters = IntPtr.Zero;
structure.lpDirectory = IntPtr.Zero;
structure.nShow = 1;
structure.dwHotKey = 0;
structure.hIcon = IntPtr.Zero;
pIContextMenu2.InvokeCommand(ref structure);
return(0);
}
}
}
catch {
}
finally {
if (ppv != null)
{
Marshal.ReleaseComObject(ppv);
}
foreach (IntPtr ptr3 in list)
{
if (ptr3 != IntPtr.Zero)
{
PInvoke.CoTaskMemFree(ptr3);
}
}
}
return(-1);
}
public static DragDropEffects DoDragDrop(List <string> lstPaths, Control control, bool fSameDirecotry)
{
DragDropEffects none;
if ((lstPaths == null) || (lstPaths.Count == 0))
{
return(DragDropEffects.None);
}
IShellFolder ppv = null;
object obj2 = null;
List <IntPtr> list = new List <IntPtr>();
try {
IntPtr[] ptrArray;
if (fSameDirecotry)
{
IntPtr ptr2;
IntPtr item = PInvoke.ILCreateFromPath(lstPaths[0]);
list.Add(item);
if ((PInvoke.SHBindToParent(item, ExplorerGUIDs.IID_IShellFolder, out ppv, out ptr2) != 0) || (ppv == null))
{
return(DragDropEffects.None);
}
List <IntPtr> list2 = new List <IntPtr>();
if (ptr2 != IntPtr.Zero)
{
list2.Add(ptr2);
}
for (int i = 1; i < lstPaths.Count; i++)
{
IntPtr ptr3 = PInvoke.ILCreateFromPath(lstPaths[i]);
if (ptr3 != IntPtr.Zero)
{
list.Add(ptr3);
IntPtr ptr4 = PInvoke.ILFindLastID(ptr3);
if (ptr4 != IntPtr.Zero)
{
list2.Add(ptr4);
}
}
}
if (list2.Count == 0)
{
return(DragDropEffects.None);
}
ptrArray = list2.ToArray();
}
else
{
list.AddRange(lstPaths.Select(PInvoke.ILCreateFromPath).Where(ptr5 => ptr5 != IntPtr.Zero));
PInvoke.SHGetDesktopFolder(out ppv);
if ((list.Count == 0) || (ppv == null))
{
return(DragDropEffects.None);
}
ptrArray = list.ToArray();
}
uint rgfReserved = 0;
Guid riid = ExplorerGUIDs.IID_IDataObject;
ppv.GetUIObjectOf(IntPtr.Zero, (uint)ptrArray.Length, ptrArray, ref riid, ref rgfReserved, out obj2);
if (obj2 != null)
{
return(control.DoDragDrop(obj2, DragDropEffects.Link | DragDropEffects.Move | DragDropEffects.Copy));
}
none = DragDropEffects.None;
}
finally {
if (obj2 != null)
{
Marshal.ReleaseComObject(obj2);
}
if (ppv != null)
{
Marshal.ReleaseComObject(ppv);
}
foreach (IntPtr ptr6 in list)
{
if (ptr6 != IntPtr.Zero)
{
PInvoke.CoTaskMemFree(ptr6);
}
}
}
return(none);
}