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
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ضمنا یادتون باشه اگه محیط سیستم عامل 64 بیت باشه ممکنه کدها خطا بدن و باید بین کد های حتما PtrSafe رو قرار بدین
کد:
Declare PtrSafe Function
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اخطار: این یک موضوع قدیمی است
به دلیل قدیمی بودن موضوع، ممکن است برخی فایل های ضمیمه به درستی کار نکنند. لطفا در صورت عدم ضرورت، از بالا آوردن موضوعات قدیمی خودداری نمایید. |
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