/// <summary>
/// Invokes the specified verb on the shell item(s).
/// </summary>
public string InvokeVerb(string verb)
{
string ret = string.Empty;
//CMINVOKECOMMANDINFO invoke = new CMINVOKECOMMANDINFO();
//invoke.cbSize = Marshal.SizeOf(invoke);
//invoke.lpVerb = verb;
CMInvokeCommandInfoEx invoke = new CMInvokeCommandInfoEx();
invoke.cbSize = Marshal.SizeOf(invoke);
invoke.lpVerb = Marshal.StringToHGlobalAnsi(verb);
try
{
m_ComInterface.InvokeCommand(ref invoke);
return(string.Empty);
}
catch (COMException e)
{
// Ignore the exception raised when the user cancels
// a delete operation.
if (e.ErrorCode != unchecked ((int)0x800704C7) &&
e.ErrorCode != unchecked ((int)0x80270000))
{
throw;
}
}
return(verb);
}
/// <summary>
/// Invokes a specific command from an IContextMenu
/// </summary>
/// <param name="iContextMenu">the IContextMenu containing the item</param>
/// <param name="cmd">the index of the command to invoke</param>
/// <param name="parentDir">the parent directory from where to invoke</param>
/// <param name="ptInvoke">the point (in screen coördinates) from which to invoke</param>
public void InvokeCommand(IContextMenu iContextMenu, IntPtr cmd, string parentDir, System.Drawing.Point ptInvoke)
{
CMInvokeCommandInfoEx invoke = new CMInvokeCommandInfoEx();
invoke.cbSize = Shell32.cbInvokeCommand;
invoke.lpVerb = cmd;
invoke.lpDirectory = parentDir;
invoke.lpVerbW = cmd;
invoke.lpDirectoryW = parentDir;
invoke.fMask = (int)(CMIC.UNICODE | CMIC.PTINVOKE);
if ((Control.ModifierKeys & Keys.Control) != 0)
{
invoke.fMask = invoke.fMask | (int)CMIC.CONTROL_DOWN;
}
if ((Control.ModifierKeys & Keys.Shift) != 0)
{
invoke.fMask = invoke.fMask | (int)CMIC.SHIFT_DOWN;
}
invoke.ptInvoke = new System.Drawing.Point(ptInvoke.X, ptInvoke.Y);
invoke.nShow = (int)SW.SHOWNORMAL;
iContextMenu.InvokeCommand(ref invoke);
}
/// <summary>
/// If this method returns true then the caller must call ReleaseMenu
/// </summary>
/// <param name="hwnd">The handle to the control to host the ContextMenu</param>
/// <param name="items">The items for which to show the ContextMenu. These items must be in the same folder.</param>
/// <param name="pt">The point where the ContextMenu should appear</param>
/// <param name="allowrename">Set if (the ContextMenu should contain the Rename command where appropriate</param>
/// <param name="cmi">The command information for the users selection</param>
/// <returns></returns>
/// <remarks></remarks>
public bool ShowMenu(IntPtr hwnd, ShellItem[] items, System.Drawing.Point pt, bool allowRename, ref CMInvokeCommandInfoEx cmi)
{
bool bShowMenu = false;
Debug.Assert(items.Length > 0);
IntPtr comContextMenu = User32.CreatePopupMenu();
IntPtr[] pidls = new System.IntPtr[items.Length];
int i;
IShellFolder folder = null;
if (items[0] == ShellItem.Desktop)
{
folder = items[0].GetIShellFolder();
}
else
{
folder = items[0].Parent.GetIShellFolder();
}
for (i = 0; i <= items.Length - 1; i++)
{
if (!items[i].CanRename)
{
allowRename = false;
}
pidls[i] = Shell32.ILFindLastID(items[i].Pidl);
}
int prgf = 0;
IntPtr pIcontext = IntPtr.Zero;
int HR = folder.GetUIObjectOf(IntPtr.Zero, (uint)pidls.Length, pidls, Shell32.IID_IContextMenu, (uint)prgf, out pIcontext);
if (HR != (int)HResult.S_OK)
{
#if DEBUG
Marshal.ThrowExceptionForHR(HR);
#endif
//GoTo FAIL;
}
winMenu = (IContextMenu)Marshal.GetObjectForIUnknown(pIcontext);
IntPtr p = IntPtr.Zero;
Marshal.QueryInterface(pIcontext, ref Shell32.IID_IContextMenu2, out p);
if (p != IntPtr.Zero)
{
winMenu2 = (IContextMenu2)Marshal.GetObjectForIUnknown(p);
}
Marshal.QueryInterface(pIcontext, ref Shell32.IID_IContextMenu3, out p);
if (p != IntPtr.Zero)
{
winMenu3 = (IContextMenu3)Marshal.GetObjectForIUnknown(p);
}
if (!pIcontext.Equals(IntPtr.Zero))
{
pIcontext = IntPtr.Zero;
}
//Check item count - should always be 0 but check just in case
uint startIndex = User32.GetMenuItemCount(comContextMenu);
//Fill the context menu
CMF flags = (CMF.NORMAL | CMF.EXPLORE);
if (allowRename)
{
flags = flags | CMF.CANRENAME;
}
if ((Control.ModifierKeys & Keys.Shift) == Keys.Shift)
{
flags = flags | CMF.EXTENDEDVERBS;
}
int idCount = (int)winMenu.QueryContextMenu(comContextMenu, startIndex, min, max, flags);
int cmd = User32.TrackPopupMenuEx(comContextMenu, TPM.TPM_RETURNCMD, pt.X, pt.Y, hwnd, IntPtr.Zero);
if (cmd >= min && cmd <= idCount)
{
cmi = new CMInvokeCommandInfoEx();
cmi.cbSize = Marshal.SizeOf(cmi);
cmi.lpVerb = (IntPtr)(cmd - min);
cmi.lpVerbW = (IntPtr)(cmd - min);
cmi.nShow = (int)SW.SHOWNORMAL;
cmi.fMask = (int)(CMIC.UNICODE | CMIC.PTINVOKE);
cmi.ptInvoke = new System.Drawing.Point(pt.X, pt.Y);
bShowMenu = true;
}
else
{
//FAIL:
if (winMenu != null)
{
Marshal.ReleaseComObject(winMenu);
winMenu = null;
}
bShowMenu = false;
}
if (winMenu2 != null)
{
Marshal.ReleaseComObject(winMenu2);
winMenu2 = null;
}
if (winMenu3 != null)
{
Marshal.ReleaseComObject(winMenu3);
winMenu3 = null;
}
if (!comContextMenu.Equals(IntPtr.Zero))
{
Marshal.Release(comContextMenu);
comContextMenu = IntPtr.Zero;
}
return(bShowMenu);
}
