Question

I am using pInvoke, IShellExtInit and IContextMenu to add a context menu to the explorer shell in C#.

I can add a single item to the context menu using the following code:

MENUITEMINFO mii = new MENUITEMINFO();
mii.cbSize = (uint)Marshal.SizeOf(mii);
mii.fMask = MIIM.MIIM_BITMAP | MIIM.MIIM_STRING | MIIM.MIIM_FTYPE | MIIM.MIIM_ID | MIIM.MIIM_STATE ;
mii.wID = idCmdFirst + increment;
mii.fType = MFT.MFT_STRING;
mii.dwTypeData = contextMenuItem.ItemText;
mii.fState = MFS.MFS_ENABLED;
mii.hbmpItem = this._pMenuBitmap;

NativeMethods.InsertMenuItem(hMenu, increment, true, ref mii)

What I’d like to do is add a menu tree; i.e. add a submenu to the newly created menu item. My first instinct was to use:

var subMenu = mii.hSubMenu;
...
NativeMethods.InsertMenuItem(subMenu,....)

But submenu is always a zero value.

Can anyone help me?

Answer 1

I presume you mean you want to have a cascading submenu that pops out ?

You need to use:

• CreatePopupMenu() to create a new menu
• add/insert your menu items into it
• then use a MENUITEMINFO where you set the .hSubMenu to the handle of your menu, and use the MIIM_SUBMENU | MIIM_TYPE mask, to insert into the context menu you get via IContextMenu:QueryContextMenu.

http://forum.cockos.com/archive/index.php/t-20799.html