Mở nút Close(x) khi đã khóa

Hỏi: Theo hướng dẫn trên, tôi đã khoa nút close , giờ muốn mở lại thì làm thế nào?

Đáp:
Bạn tạo 1 Module mới với nội dung sau:

Code:

Private Const GWL_EXSTYLE = (-20)
Private Const GWL_STYLE = (-16)
Private Const WS_MAXIMIZEBOX = &H10000
Private Const WS_MINIMIZEBOX = &H20000
Private Const WS_SYSMENU = &H80000

Private Const HWND_TOP = 0
Private Const SWP_NOMOVE = &H2
Private Const SWP_NOSIZE = &H1
Private Const SWP_FRAMECHANGED = &H20
Private Const SWP_DRAWFRAME = SWP_FRAMECHANGED

Private Declare Function SetWindowLong Lib "user32" _
Alias "SetWindowLongA" (ByVal hwnd As Long, _
ByVal nIndex As Long, ByVal dwNewLong 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 SetWindowPos Lib "user32" _
(ByVal hwnd As Long, ByVal hWndInsertAfter As Long, _
ByVal x As Long, ByVal y As Long, ByVal cx As Long, _
ByVal cy As Long, ByVal wFlags As Long) As Long

Sub UnHideAccessCloseButton()

    Dim lngStyle As Long

    lngStyle = GetWindowLong(hWndAccessApp, GWL_STYLE)
    lngStyle = lngStyle Or WS_SYSMENU
    Call SetWindowLong(hWndAccessApp, GWL_STYLE, lngStyle)
    Call SetWindowPos(hWndAccessApp, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE Or SWP_DRAWFRAME)

End Sub

Trong form Admin hãy tạo 1 nút để gọi hàm UnHideAccessCloseButton nhấn nút và đóng lại rồi xem kết quả nhé!
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