'------------------------------------------------------------------- '有输入掩码的 InputBox '在 VBA InputBox 可以隐藏输入的字符 ' '作者:Daniel Klann '日期:2003年3月 '译者:cg1 (http://access911.net) '环境:Windows XP + Access 2003 测试通过 '------------------------------------------------------------------- '需要引用 WIN32 API Private Declare Function CallNextHookEx _ Lib "user32" (ByVal hHook As Long, _ ByVal ncode As Long, _ ByVal wParam As Long, _ lParam As Any) As Long Private Declare Function GetModuleHandle _ Lib "kernel32" Alias "GetModuleHandleA" _ (ByVal lpModuleName As String) As Long Private Declare Function SetWindowsHookEx _ Lib "user32" Alias "SetWindowsHookExA" _ (ByVal idHook As Long, _ ByVal lpfn As Long, _ ByVal hmod As Long, _ ByVal dwThreadId As Long) As Long Private Declare Function UnhookWindowsHookEx _ Lib "user32" (ByVal hHook As Long) As Long Private Declare Function SendDlgItemMessage _ Lib "user32" Alias "SendDlgItemMessageA" _ (ByVal hDlg As Long, _ ByVal nIDDlgItem As Long, _ ByVal wMsg As Long, _ ByVal wParam As Long, _ ByVal lParam As Long) As Long Private Declare Function GetClassName _ Lib "user32" Alias "GetClassNameA" _ (ByVal hwnd As Long, _ ByVal lpClassName As String, _ ByVal nMaxCount As Long) As Long Private Declare Function GetCurrentThreadId Lib "kernel32" () As Long '定义 API 中需要引用的常数 Private Const EM_SETPASSWORDCHAR = &HCC Private Const WH_CBT = 5 Private Const HCBT_ACTIVATE = 5 Private Const HC_ACTION = 0 Private hHook As Long Public Function NewProc(ByVal lngCode As Long, _ ByVal wParam As Long, _ ByVal lParam As Long) As Long Dim RetVal Dim strClassName As String, lngBuffer As Long If lngCode < HC_ACTION Then NewProc = CallNextHookEx(hHook, lngCode, wParam, lParam) Exit Function End If strClassName = String$(256, " ") lngBuffer = 255 If lngCode = HCBT_ACTIVATE Then '当前被激活的窗体 RetVal = GetClassName(wParam, strClassName, lngBuffer) If Left$(strClassName, RetVal) = "#32770" Then '获取 InputBox 的类名 '用 * 星号替换文本框中显示的字符 'Asc("*") 可以替换,你可以用其他字符代替 SendDlgItemMessage wParam, &H1324, EM_SETPASSWORDCHAR, Asc("*"), &H0 End If End If '以下这行确保其他钩子能够被正确调用 CallNextHookEx hHook, lngCode, wParam, lParam End Function Public Function InputBoxDK(Prompt, _ Optional Title, _ Optional Default, _ Optional XPos, _ Optional YPos, _ Optional HelpFile, _ Optional Context) As String Dim lngModHwnd As Long, lngThreadID As Long lngThreadID = GetCurrentThreadId lngModHwnd = GetModuleHandle(vbNullString) hHook = SetWindowsHookEx(WH_CBT, AddressOf NewProc, lngModHwnd, lngThreadID) InputBoxDK = InputBox(Prompt, Title, Default, XPos, YPos, HelpFile, Context) UnhookWindowsHookEx hHook End Function Function test() '按 ALT + F11 后插入一个模块,然后将所有代码 COPY 进去后, '将光标停在这里,然后按 F5 MsgBox InputBoxDK("dfasd") End Function |