private void SetReplaceItems(ContextMenu menu)
{
foreach (var item in replaceItems)
{
var count = WinApiFunctions.GetMenuItemCount(menu.Handle);
var index = item.Index < 0 ? count + item.Index : item.Index;
var itemInfo = new MENUITEMINFO();
itemInfo.cbSize = Marshal.SizeOf(itemInfo);
itemInfo.fMask = MIIM.MIIM_ID | MIIM.MIIM_SUBMENU;
if (WinApiFunctions.GetMenuItemInfo(menu.Handle, index, true, ref itemInfo))
{
actions[itemInfo.wID] = item.Action;
}
}
}
private void SetNewItems(ContextMenu menu)
{
foreach (var item in newItems)
{
var newItemInfo = new MENUITEMINFO();
newItemInfo.cbSize = Marshal.SizeOf(newItemInfo);
newItemInfo.fMask = MIIM.MIIM_CHECKMARKS | MIIM.MIIM_FTYPE | MIIM.MIIM_ID | MIIM.MIIM_STATE |
MIIM.MIIM_STRING;
newItemInfo.fType = (uint)Consts.MFT_STRING;
newItemInfo.fState = (uint)Consts.MFS_ENABLED;
newItemInfo.wID = actions.Count + 1;
actions[newItemInfo.wID] = item.Action;
// newItemInfo.hbmpChecked = hBitmap;
// newItemInfo.hbmpUnchecked = hBitmap;
newItemInfo.dwTypeData = item.Text;
newItemInfo.cch = 8;
WinApiFunctions.InsertMenuItem(menu.Handle, item.Index, true, ref newItemInfo);
}
}
private static IShellItem CreateShellItem(string filename)
{
try
{
return(WinApiFunctions.SHCreateItemFromParsingName(filename, IntPtr.Zero, typeof(IShellItem).GUID));
}
catch (ArgumentException)
{
return(null);
}
// For system files like $MFT, $Boot etc.
catch (UnauthorizedAccessException)
{
return(null);
}
catch (FileNotFoundException)
{
return(null);
}
}
// This function returns after the user canceled the menu or chose a menu item.
public void Show()
{
var contextMenu = CreateShellMenu(filename);
if (contextMenu == null)
{
return;
}
try
{
using (var menu = new ContextMenu())
{
contextMenu.QueryContextMenu(menu.Handle, 0, FirstCmd, int.MaxValue, (CMF)Consts.CMF_EXPLORE);
actions.Clear();
SetReplaceItems(menu);
SetNewItems(menu);
var wnd = new Form();
Action showMenu = () =>
{
var command = WinApiFunctions.TrackPopupMenuEx(menu.Handle, TPM.TPM_RETURNCMD, pos.X, pos.Y,
wnd.Handle, IntPtr.Zero);
DispatchCommand(contextMenu, command);
};
if (Dispatcher.CurrentDispatcher.CheckAccess())
{
showMenu();
}
else
{
Dispatcher.CurrentDispatcher.BeginInvoke(showMenu);
}
}
}
catch (Exception ex)
{
Log.Instance.Error("ShellMenuManager: " + ex.Message);
}
}
public static BitmapSource ToBitmapSource(this Bitmap bmp)
{
if (bmp == null)
{
return(null);
}
var handle = bmp.GetHbitmap();
BitmapSource source;
try
{
source = Imaging.CreateBitmapSourceFromHBitmap(handle, IntPtr.Zero, Int32Rect.Empty,
BitmapSizeOptions.FromEmptyOptions());
}
finally
{
WinApiFunctions.DeleteObject(handle);
}
return(source);
}
public BitmapSource GetThumbnail(string fileName)
{
var thumbSizePixels = GetThumbSizePixels();
var bitmapHandle = IntPtr.Zero;
Bitmap bmpThumbnail = null;
const ThumbnailOptions options = ThumbnailOptions.BiggerSizeOk | ThumbnailOptions.ResizeToFit;
try
{
bitmapHandle = GetBitmapHandle(Path.GetFullPath(fileName), thumbSizePixels, options);
bmpThumbnail = GetBitmapFromHandle(bitmapHandle);
}
catch (Exception e)
{
Log.Instance.Error("Cannot retrieve thumbnail " + e.Message);
}
finally
{
// Delete HBitmap to avoid memory leaks.
WinApiFunctions.DeleteObject(bitmapHandle);
}
return(bmpThumbnail == null ? null : bmpThumbnail.ToBitmapSource());
}
public static IntPtr GetID(IShellItem item)
{
var intermediateID = SHGetIDListFromObject(item);
return(WinApiFunctions.ILFindLastID(intermediateID));
}
private static IntPtr SHGetIDListFromObject(IShellItem item)
{
// todo implement for XP
return(WinApiFunctions.SHGetIDListFromObject(item));
}
