Visual Basic 4 の AddressOf に相当するものはありますか?
VB4 で動作するフォームのシステム メニューにメニュー項目を追加する Visual Basic 5/6 コードを取得しようとしています。以下は、コンパイルされないコード スニペットです。
'Add Custom Menu To System Menu
Call AppendMenu(GetSystemMenu(Me.hWnd, 0&), MF_SEPARATOR, 0&, vbNullString)
Call AppendMenu(GetSystemMenu(Me.hWnd, 0&), MF_STRING, IDM_SYSTEMTRAY, "Minimize To &System Tray")
Call AppendMenu(GetSystemMenu(Me.hWnd, 0&), MF_STRING, IDM_ABOUT, "&About...")
procOld = SetWindowLong(hWnd, GWL_WNDPROC, AddressOf WindowProc)
モジュールの API 宣言は次のとおりです。
' Win32 API
Public Const MF_SEPARATOR = &H800&
Public Const MF_STRING = &H0&
Public Const GWL_WNDPROC = (-4)
Public Declare Function GetSystemMenu Lib "user32" (ByVal hWnd As Long, ByVal bRevert As Long) As Long
Public Declare Function AppendMenu Lib "user32" Alias "AppendMenuA" (ByVal hMenu As Long, ByVal wFlags As Long, ByVal wIDNewItem As Long, ByVal lpNewItem As Any) As Long
Public Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Public Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Public Const WM_SYSCOMMAND = &H112
' User Created
Public procOld As Long
Public Const IDM_ABOUT As Long = 1010
Public Const IDM_SYSTEMTRAY As Long = 1011
そして最後に、WindowProc のコード:
Public Function WindowProc(ByVal hWnd As Long, ByVal iMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Select Case iMsg
Case WM_SYSCOMMAND
Select Case wParam
Case IDM_ABOUT
MsgBox "About goes here..."
Exit Function
Case IDM_SYSTEMTRAY
MsgBox "Send to system tray code goes here..."
Exit Function
End Select
End Select
' Pass all messages on to VB and then return the value to windows
WindowProc = CallWindowProc(procOld, hWnd, iMsg, wParam, lParam)
End Function
私のフォームのシステムメニューにアイテムを追加するための他のポインターまたは代替方法も高く評価されます!