Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) 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 Declare Function SetLayeredWindowAttributes Lib "user32" _
(ByVal hWnd As Long, ByVal crey As Byte, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long
Private Const GWL_EXSTYLE = (-20)
Private Const WS_EX_LAYERED = &H80000
Private Const LWA_ALPHA = &H2&
Public hWnd As Long
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Private Sub Transparent(bytOpacity As Byte)
'bytOpacity : có giá trị từ 0-255
bytOpacity = 192 ' variable keeping opacity setting
hWnd = FindWindow("ThunderDFrame", Me.Caption)
Call SetWindowLong(Me.hWnd, GWL_EXSTYLE, GetWindowLong(Me.hWnd, GWL_EXSTYLE) Or WS_EX_LAYERED)
Call SetLayeredWindowAttributes(Me.hWnd, 0, bytOpacity, LWA_ALPHA)
End Sub
Sau đó bạn có thể tạo một nút lệnh, và gọi thủ tục [B]Transparent[/B] và truyền giá trị từ 0 đến 255 xem sao.
Chúc bạn thành công.
Lê Văn Duyệt[/quote]
Mạn phép bác, em sửa lại code cho đúng, chứ để như thế mà lại dặt trong Module thì không chạy được
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Public Sub Transparent(bytOpacity As Byte, FrmCaption as string)
hWnd = FindWindow("ThunderDFrame", FrmCaption)
Call SetWindowLong(hWnd, GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) Or WS_EX_LAYERED)
Call SetLayeredWindowAttributes(hWnd, 0, bytOpacity, LWA_ALPHA)
End Sub
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