| ' show the menu at the current cursor location;
' the flags make the menu aligned to the right (!); enable the right button to select
' an item; prohibit the menu from sending messages and make it return the index of
' the selected item.
' the TrackPopupMenu function returns when the user selected a menu item or cancelled
' the window handle used here may be any window handle from your application
' the return value is the (1-based) index of the menu item or 0 in case of cancelling
iMenu = TrackPopupMenu(hMenu, TPM_RIGHTBUTTON + TPM_LEFTALIGN + TPM_NONOTIFY + TPM_RETURNCMD, p.x, p.y, 0, GetForegroundWindow(), 0)
Dim result As Long
Dim buffer As String
Const MF_BYPOSITION = &H400&
buffer = Space(255)
result = GetMenuString(hMenu, (iMenu - 1), buffer, _
Len(buffer), MF_BYPOSITION)
'Debug.Print buffer
mSelMenuString = Trim(buffer)
' release and destroy the menu (for sanity)
DestroyMenu hMenu
' return the selected menu item's index
Popup = iMenu
End Function
'结束
'以下是实例，在Form上添加一个ListBox控件
Option Explicit
Private Sub Form_Load()
List1.AddItem "Right-Click here for a menu"
End Sub
Private Sub List1_MouseUp(Button As Integer, Shift As Integer, x As Single, y As Single)
Dim oMenu As cPopupMenu
Dim lMenuChosen As Long
'
If Button = vbRightButton Then
Set oMenu = New cPopupMenu
'
' Pass in the desired menu, use '-' for a separator
'
lMenuChosen = oMenu.Popup("Menu 1", "Menu 2", "Menu 3", _
"-", "Menu 4")
'
Debug.Print lMenuChosen
Debug.Print oMenu.SelMenuString
End If
'
End Sub
用VB编写一个弹出菜单类下 |
