(آموزشی) فعال سازی اسکرول متن در لیست باکس با کمک اسکرول ماوس

**abbaskhanifar=** · 2024/01/22, 02:06

نوشته اصلی توسط ali.b

سلام
همانطور که می دانیم در صورتی که تعداد ستون ها و ردیف های متن ها از ابعاد تعریف شده در لیست باکس بیشتر باشه به صورت خودکار ایجاد نوارهای اسکرول می کنه در حالت معمول نیاز هست با کلیک و درگ اونها متن ها رو ببینیم
ولی با این کدها تنها با اسکرولز ماوس این کار صورت میگیره

کدها:

این کد مربوط به لیست باکس هست برای کمبو باکس هم کاربرد داره
کافیه برای کمبو باکس هم کد زیر تعریف شه

کد:

Private Sub ListBox1_MouseMove(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single)HookListBoxScroll Me, Me.ListBox1

End Sub

کد زیر رو هم در یک ماژول جدید قرار بدین

کد:

'''''' normal module code

Option Explicit


Private Type POINTAPI
        X As Long
        Y As Long
End Type


Private Type MOUSEHOOKSTRUCT
        pt As POINTAPI
        hwnd As Long
        wHitTestCode As Long
        dwExtraInfo As Long
End Type


Private Declare Function FindWindow Lib "user32" _
                                        Alias "FindWindowA" ( _
                                                        ByVal lpClassName As String, _
                                                        ByVal lpWindowName As String) As Long


Private Declare Function GetWindowLong Lib "user32.dll" _
                                        Alias "GetWindowLongA" ( _
                                                        ByVal hwnd As Long, _
                                                        ByVal nIndex As Long) 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 CallNextHookEx Lib "user32" ( _
                                                        ByVal hHook As Long, _
                                                        ByVal nCode As Long, _
                                                        ByVal wParam As Long, _
                                                        lParam As Any) As Long


Private Declare Function UnhookWindowsHookEx Lib "user32" ( _
                                                        ByVal hHook As Long) As Long


'Private Declare Function PostMessage Lib "user32.dll" _
'                                         Alias "PostMessageA" ( _
'                                                         ByVal hwnd As Long, _
'                                                         ByVal wMsg As Long, _
'                                                         ByVal wParam As Long, _
'                                                         ByVal lParam As Long) As Long


Private Declare Function WindowFromPoint Lib "user32" ( _
                                                        ByVal xPoint As Long, _
                                                        ByVal yPoint As Long) As Long


Private Declare Function GetCursorPos Lib "user32.dll" ( _
                                                        ByRef lpPoint As POINTAPI) As Long


Private Const WH_MOUSE_LL As Long = 14
Private Const WM_MOUSEWHEEL As Long = &H20A
Private Const HC_ACTION As Long = 0
Private Const GWL_HINSTANCE As Long = (-6)


'Private Const WM_KEYDOWN As Long = &H100
'Private Const WM_KEYUP As Long = &H101
'Private Const VK_UP As Long = &H26
'Private Const VK_DOWN As Long = &H28
'Private Const WM_LBUTTONDOWN As Long = &H201


Private mLngMouseHook As Long
Private mListBoxHwnd As Long
Private mbHook As Boolean
Private mCtl As MSForms.Control
Dim n As Long


Sub HookListBoxScroll(frm As Object, ctl As MSForms.Control)
Dim lngAppInst As Long
Dim hwndUnderCursor As Long
Dim tPT As POINTAPI
     GetCursorPos tPT
     hwndUnderCursor = WindowFromPoint(tPT.X, tPT.Y)
     If Not frm.ActiveControl Is ctl Then
             ctl.SetFocus
     End If
     If mListBoxHwnd <> hwndUnderCursor Then
             UnhookListBoxScroll
             Set mCtl = ctl
             mListBoxHwnd = hwndUnderCursor
             lngAppInst = GetWindowLong(mListBoxHwnd, GWL_HINSTANCE)
             ' PostMessage mListBoxHwnd, WM_LBUTTONDOWN, 0&, 0&
             If Not mbHook Then
                     mLngMouseHook = SetWindowsHookEx( _
                                                     WH_MOUSE_LL, AddressOf MouseProc, lngAppInst, 0)
                     mbHook = mLngMouseHook <> 0
             End If
     End If
End Sub


Sub UnhookListBoxScroll()
     If mbHook Then
                Set mCtl = Nothing
             UnhookWindowsHookEx mLngMouseHook
             mLngMouseHook = 0
             mListBoxHwnd = 0
             mbHook = False
        End If
End Sub


Private Function MouseProc( _
             ByVal nCode As Long, ByVal wParam As Long, _
             ByRef lParam As MOUSEHOOKSTRUCT) As Long
Dim idx As Long
        On Error GoTo errH
     If (nCode = HC_ACTION) Then
             If WindowFromPoint(lParam.pt.X, lParam.pt.Y) = mListBoxHwnd Then
                     If wParam = WM_MOUSEWHEEL Then
                                MouseProc = True
'                                If lParam.hwnd > 0 Then
'                                        PostMessage mListBoxHwnd, WM_KEYDOWN, VK_UP, 0
'                                Else
'                                        PostMessage mListBoxHwnd, WM_KEYDOWN, VK_DOWN, 0
'                                End If
'                                PostMessage mListBoxHwnd, WM_KEYUP, VK_UP, 0
                                If lParam.hwnd > 0 Then idx = -1 Else idx = 1
'                             idx = idx + mCtl.ListIndex
'                             If idx >= 0 Then mCtl.ListIndex = idx
                             idx = idx + mCtl.TopIndex
                             If idx >= 0 Then mCtl.TopIndex = idx
                                Exit Function
                     End If
             Else
                     UnhookListBoxScroll
             End If
     End If
     MouseProc = CallNextHookEx( _
                             mLngMouseHook, nCode, wParam, ByVal lParam)
     Exit Function
errH:
     UnhookListBoxScroll
End Function
'''''''' end normal module code

.

ضمنا یادتون باشه اگه محیط سیستم عامل 64 بیت باشه ممکنه کدها خطا بدن و باید بین کد های

کد:

Declare Function

حتما PtrSafe رو قرار بدین

کد:

Declare [COLOR=#ff0000]PtrSafe [/COLOR]Function

دوست عزیز این روی ویندوز 64 با وجود چیزی که شما گفتین اصلا جواب نمیده
لطفا فایل رو براساس ویندوز 64 تنظیم نمایید

(آموزشی) فعال سازی اسکرول متن در لیست باکس با کمک اسکرول ماوس

(آموزشی) فعال سازی اسکرول متن در لیست باکس با کمک اسکرول ماوس

کامنت