Private Declare Function GetMenu Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function GetSubMenu Lib "user32" (ByVal hMenu As Long, ByVal nPos As Long) As Long
Private Declare Function GetMenuItemID Lib "user32" (ByVal hMenu As Long, ByVal nPos As Long) As Long
Private Declare Function ModifyMenu Lib "user32" Alias "ModifyMenuA" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long, ByVal wIDNewItem As Long, ByVal lpString As String) As Long
Private Declare Function SetMenuItemBitmaps Lib "user32" (ByVal hMenu As Long, ByVal nPosition As Long, ByVal wFlags As Long, ByVal hBitmapUnchecked As Long, ByVal hBitmapChecked As Long) As Long
'Esto para el primer menu que tiene 5 submenus
Dim i%
Dim hMenu, hSubMenu, menuID, x
hMenu = GetMenu(hwnd)
hSubMenu = GetSubMenu(hMenu, 0) '1 for "Other" menu etcetera
For i = 1 To 4
menuID = GetMenuItemID(hSubMenu, i - 1)
x = SetMenuItemBitmaps(hMenu, menuID, &H4, img.ListImages(i).Picture, img.ListImages(i).Picture)
Next
menuID = GetMenuItemID(hSubMenu, 5)
x = SetMenuItemBitmaps(hMenu, menuID, 0, img.ListImages(5).Picture, 0&)
No obstante si buscas en Internet SetMenuItemBitmaps y Visual basicseguro que encuentras informacion