public string Popup(FileSystemInfoEx[] items, Point pt)
{
if (items.Length > 0 && !_contextMenuVisible)
{
//0.15: Fixed ShellFolder not freed correctly.
try
{
using (ShellFolder2 parentShellFolder = items[0].Parent != null ?
items[0].Parent.ShellFolder :
DirectoryInfoEx.DesktopDirectory.ShellFolder)
try
{
_contextMenuVisible = true;
///Debug.WriteLine(items[0].Parent.FullName);
IntPtr ptrContextMenu = IntPtr.Zero;
IntPtr ptrContextMenu2 = IntPtr.Zero;
IntPtr PtrContextMenu3 = IntPtr.Zero;
IntPtr contextMenu = IntPtr.Zero;
List <IntPtr> menuPtrConstructed = new List <IntPtr>();
List <IntPtr> imgPtrConstructed = new List <IntPtr>();
PIDL[] pidls = IOTools.GetPIDL(items, true);
if (ContextMenuHelper.GetIContextMenu(parentShellFolder, IOTools.GetPIDLPtr(pidls),
out ptrContextMenu, out _iContextMenu))
{
try
{
queryMenuItemsEventArgs = new QueryMenuItemsEventArgs(items);
if (OnQueryMenuItems != null)
{
OnQueryMenuItems(this, queryMenuItemsEventArgs);
}
contextMenu = ShellAPI.CreatePopupMenu();
if (queryMenuItemsEventArgs.QueryContextMenu)
{
_iContextMenu.QueryContextMenu(contextMenu, 0, ShellAPI.CMD_FIRST,
ShellAPI.CMD_LAST, ShellAPI.CMF.EXPLORE | ShellAPI.CMF.CANRENAME |
((Control.ModifierKeys & Keys.Shift) != 0 ? ShellAPI.CMF.EXTENDEDVERBS : 0));
}
#region obsolute
//for (uint i = 0; i < queryMenuItemsEventArgs.ExtraMenuItems.Length; i++)
//{
// string caption = queryMenuItemsEventArgs.ExtraMenuItems[i];
// if (caption != "---")
// {
// ShellAPI.InsertMenu(contextMenu, i, ShellAPI.MFT.BYPOSITION,
// ShellAPI.CMD_LAST + i + 1, caption);
// if (queryMenuItemsEventArgs.DefaultItem == i)
// ShellAPI.SetMenuDefaultItem(contextMenu, i, true);
// }
// else ShellAPI.InsertMenu(contextMenu, i, ShellAPI.MFT.BYPOSITION |
// ShellAPI.MFT.SEPARATOR, 0, "-");
//}
#endregion
//0.11: Added ContextMenuWrapper OnQueryMenuItems event now support multilevel directory. (e.g. @"Tools\Add")
ContextMenuHelperEx.ConstructCustomMenu(contextMenu, queryMenuItemsEventArgs.ExtraMenuItems, out menuPtrConstructed, out imgPtrConstructed);
if (queryMenuItemsEventArgs.QueryContextMenu2)
{
try
{
Marshal.QueryInterface(ptrContextMenu, ref ShellAPI.IID_IContextMenu2,
out ptrContextMenu2);
_iContextMenu2 = (IContextMenu2)Marshal.GetTypedObjectForIUnknown(
ptrContextMenu2, typeof(IContextMenu2));
}
catch (Exception) { }
}
if (queryMenuItemsEventArgs.QueryContextMenu3)
{
try
{
Marshal.QueryInterface(ptrContextMenu, ref ShellAPI.IID_IContextMenu3,
out PtrContextMenu3);
_iContextMenu3 = (IContextMenu3)Marshal.GetTypedObjectForIUnknown(
PtrContextMenu3, typeof(IContextMenu3));
}
catch (Exception) { }
}
uint GMDI_USEDISABLED = 0x0001;
//uint GMDI_GOINTOPOPUPS = 0x0002;
uint intDefaultItem = (uint)ShellAPI.GetMenuDefaultItem(contextMenu, false, GMDI_USEDISABLED);
string strDefaultCommand = intDefaultItem >= ShellAPI.CMD_FIRST ?
ContextMenuHelper.GetCommandString(_iContextMenu, intDefaultItem - ShellAPI.CMD_FIRST, true) : null;
if (queryMenuItemsEventArgs.QueryContextMenu) //No need to Disable if query is not carried out in first place.
{
//0.11: Added queryMenuItemsEventArgs.GrayedItems / HiddenItems
ContextMenuHelperEx.DisableMenuItems(contextMenu, _iContextMenu,
queryMenuItemsEventArgs.GrayedItems, ContextMenuHelperEx.DisabledMethods.Gray);
ContextMenuHelperEx.DisableMenuItems(contextMenu, _iContextMenu,
queryMenuItemsEventArgs.HiddenItems, ContextMenuHelperEx.DisabledMethods.Remove);
}
//0.17: Added DefaultItem and DefaultCommand in BeforePopup
bool cont = true;
if (OnBeforePopup != null)
{
BeforePopupEventArgs args = new BeforePopupEventArgs
(contextMenu, _iContextMenu, intDefaultItem - ShellAPI.CMD_FIRST, strDefaultCommand);
OnBeforePopup(this, args);
cont = args.ContinuePopup;
}
if (cont)
{
//0.18 Fixed Context menu disappear in some case. (By cwharmon)
//http://www.codeproject.com/KB/files/DirectoryInfoEx.aspx#xx3475961xx
ShellAPI.SetForegroundWindow(this.Handle);
uint selected = ShellAPI.TrackPopupMenuEx(contextMenu, ShellAPI.TPM.RETURNCMD,
pt.X, pt.Y, this.Handle, IntPtr.Zero);
uint msg = 0;
ShellAPI.PostMessage(this.Handle, msg, IntPtr.Zero, IntPtr.Zero);
if (OnMouseHover != null)
{
OnMouseHover(this, new MouseHoverEventArgs("", "", 0));
}
// The orders for the commands for the extra menu items was one off,
// when you clicked on the first menu item nothing happened, when you
// clicked on the second the first command was run.
// Fixed - John Normoyle - 18 Jun 2011
if (selected >= ShellAPI.CMD_LAST)
{
return(removeCheckedSymbol(queryMenuItemsEventArgs.ExtraMenuItems[selected - ShellAPI.CMD_LAST]));
}
//if (selected > ShellAPI.CMD_LAST)
//{
// return removeCheckedSymbol(queryMenuItemsEventArgs.ExtraMenuItems[selected - ShellAPI.CMD_LAST - 1]);
//}
if (selected >= ShellAPI.CMD_FIRST)
{
string command = ContextMenuHelper.GetCommandString(_iContextMenu,
selected - ShellAPI.CMD_FIRST, true);
if (command == null)
{
return(null);
}
if (OnBeforeInvokeCommand != null)
{
InvokeCommandEventArgs args =
new InvokeCommandEventArgs(command, "", selected, items);
OnBeforeInvokeCommand(this, args);
if (!args.ContinueInvoke)
{
return(command);
}
}
if (command == "rename")
{
return("rename");
}
else
{
//if (items.Length == 1 && items[0] is DirectoryInfoEx)
ContextMenuHelper.InvokeCommand(_iContextMenu,
selected - ShellAPI.CMD_FIRST,
(items[0].Parent != null) ? items[0].Parent.FullName :
items[0].FullName, pt);
//else
//ContextMenuHelper.InvokeCommand(items[0].Parent,
// IOTools.GetPIDLPtr(items, true), selected - ShellAPI.CMD_FIRST,
// pt);
}
}
}
}
finally
{
IOTools.FreePIDL(pidls);
if (_iContextMenu != null)
{
Marshal.ReleaseComObject(_iContextMenu);
_iContextMenu = null;
}
if (_iContextMenu2 != null)
{
Marshal.ReleaseComObject(_iContextMenu2);
_iContextMenu2 = null;
}
if (_iContextMenu3 != null)
{
Marshal.ReleaseComObject(_iContextMenu3);
_iContextMenu3 = null;
}
foreach (IntPtr menuPtr in menuPtrConstructed)
{
ShellAPI.DestroyMenu(menuPtr);
}
menuPtrConstructed.Clear();
if (contextMenu != null)
{
ShellAPI.DestroyMenu(contextMenu);
}
if (ptrContextMenu != IntPtr.Zero)
{
Marshal.Release(ptrContextMenu);
}
if (ptrContextMenu2 != IntPtr.Zero)
{
Marshal.Release(ptrContextMenu2);
}
if (PtrContextMenu3 != IntPtr.Zero)
{
Marshal.Release(PtrContextMenu3);
}
}
}
}
finally
{
_contextMenuVisible = false;
if (OnAfterPopup != null)
{
AfterPopupEventArgs args = new AfterPopupEventArgs();
OnAfterPopup(this, args);
}
}
}
catch { }
}
return(null);
}
protected override void WndProc(ref Message m)
{
#region IContextMenu
if (_iContextMenu != null &&
m.Msg == (int)ShellAPI.WM.MENUSELECT &&
((int)ShellHelper.HiWord(m.WParam) & (int)ShellAPI.MFT.SEPARATOR) == 0)
//&&
//((int)ShellHelper.HiWord(m.WParam) & (int)ShellAPI.MFT.POPUP) == 0)
{
uint cmdID = ShellHelper.LoWord(m.WParam);
string info = null, command = null;
if (cmdID == 0)
{
return;
}
else
if (cmdID > ShellAPI.CMD_LAST)
{
info = command = removeCheckedSymbol(queryMenuItemsEventArgs.ExtraMenuItems[cmdID - ShellAPI.CMD_LAST - 1]);
}
else
{
info = ContextMenuHelper.GetCommandString(
_iContextMenu, cmdID - ShellAPI.CMD_FIRST,
false);
command = ContextMenuHelper.GetCommandString(
_iContextMenu, cmdID - ShellAPI.CMD_FIRST,
true);
}
if (OnMouseHover != null)
{
OnMouseHover(this, new MouseHoverEventArgs(command, info.ToString(), cmdID));
}
}
#endregion
#region IContextMenu2
if (_iContextMenu2 != null &&
(m.Msg == (int)ShellAPI.WM.INITMENUPOPUP ||
m.Msg == (int)ShellAPI.WM.MEASUREITEM ||
m.Msg == (int)ShellAPI.WM.DRAWITEM))
{
if (_iContextMenu2.HandleMenuMsg(
(uint)m.Msg, m.WParam, m.LParam) == ShellAPI.S_OK)
{
return;
}
}
#endregion
#region IContextMenu3
if (_iContextMenu3 != null &&
m.Msg == (int)ShellAPI.WM.MENUCHAR)
{
if (_iContextMenu3.HandleMenuMsg2(
(uint)m.Msg, m.WParam, m.LParam, IntPtr.Zero) == ShellAPI.S_OK)
{
return;
}
}
#endregion
base.WndProc(ref m);
}
