'==========================================================
'| 模 塊 名 | TextBoxDisableAbility
'| 說  明 | 禁止文本框的功能
'==========================================================Option Explicit
Private Declare Function SetWindowText Lib "user32" Alias "SetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String) As Long
Private 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
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Const GWL_WNDPROC = (-4)
Private Const WM_CUT = &H300 '-------------剪切消息
Private Const WM_COPY As Long = &H301 '-------------復(fù)制消息
Private Const WM_PASTE As Long = &H302 '-------------粘貼消息
Private Const WM_CLEAR = &H303 '-------------刪除消息[右鍵菜單的刪除]
Private Const EM_UNDO = &HC7 '-------------撤銷消息
Private Const WM_CONTEXTMENU = &H7B '-------------右鍵菜單
Private prevWndProc   As Long
Private Function WndProc(ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
  Select Case Msg
  Case WM_CUT, WM_COPY, WM_PASTE, WM_CLEAR, EM_UNDO, WM_CONTEXTMENU
    '這里處理自定義的事件,最好為空
  Case Else
    '回調(diào)系統(tǒng)函數(shù)處理
    WndProc = CallWindowProc(prevWndProc, hwnd, Msg, wParam, lParam)
  End Select
End Function
Public Sub DisableAbility(TargetTextBox As TextBox)
  '程序啟動時調(diào)用這個
  prevWndProc = GetWindowLong(TargetTextBox.hwnd, GWL_WNDPROC)
  SetWindowLong TargetTextBox.hwnd, GWL_WNDPROC, AddressOf WndProc
End Sub