Fade and Opacity

Hi,

Two questions:

1) How do i change the opacity of a form

2) How can i make a form fade in?

Any help would be great!

Thanks,

Ross

Use this API code:

VB Code:

‘In general declarations
Dim intA as integer
Const LWA_COLORKEY = &H1
Const LWA_ALPHA = &H2
Const GWL_EXSTYLE = (-20)
Const WS_EX_LAYERED = &H80000
 
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 crKey As Long, ByVal bAlpha As Byte, _
   ByVal dwFlags As Long) As Long
 
 
 
Private Sub TmrTimer_timer
 
If intA <> 255 Then
IntA = intA + 1
Else
tmrTimer.enabled = false
End If
 
Dim Ret As Long
Ret = GetWindowLong(Me.hWnd, GWL_EXSTYLE)
Ret = Ret Or WS_EX_LAYERED
SetWindowLong Me.hWnd, GWL_EXSTYLE, Ret
'Set the opacity of the layered window to intA
SetLayeredWindowAttributes Me.hWnd, 0, intA, LWA_ALPHA
End Sub
 
End Sub

Quote:

---

Originally Posted by Moneybucks

Use this API code:

VB Code:

‘In general declarations
Dim intA as integer
Const LWA_COLORKEY = &H1
Const LWA_ALPHA = &H2
Const GWL_EXSTYLE = (-20)
Const WS_EX_LAYERED = &H80000
 
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 crKey As Long, ByVal bAlpha As Byte, _
   ByVal dwFlags As Long) As Long
 
 
 
Private Sub TmrTimer_timer
 
If intA <> 255 Then
IntA = intA + 1
Else
tmrTimer.enabled = false
End If
 
Dim Ret As Long
Ret = GetWindowLong(Me.hWnd, GWL_EXSTYLE)
Ret = Ret Or WS_EX_LAYERED
SetWindowLong Me.hWnd, GWL_EXSTYLE, Ret
'Set the opacity of the layered window to intA
SetLayeredWindowAttributes Me.hWnd, 0, intA, LWA_ALPHA
End Sub
 
End Sub

---

hey dude i modify your code because the form was showing and before disapear... and after was showing again! now the form is show with fade! i thing that are so be good now

look this

VB Code:

Option Explicit
 
 
 
 
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 crKey As Long, ByVal bAlpha As Byte, _
   ByVal dwFlags As Long) As Long
 
 
Const LWA_COLORKEY = &H2
Const LWA_ALPHA = &H2
Const GWL_EXSTYLE = (-20)
Const WS_EX_LAYERED = &H80000
 
 
 
 
 
Dim intA As Integer
 
Private Sub Form_Load()
Form1.Visible = False
End Sub
 
Private Sub TmrTimer_timer()
 
If intA <> 255 Then
intA = intA + 1
If intA > 1 Then
Form1.Visible = True
End If
Else
TmrTimer.Enabled = True
End If
 
Dim Ret As Long
Ret = GetWindowLong(Me.hWnd, GWL_EXSTYLE)
Ret = Ret Or WS_EX_LAYERED
SetWindowLong Me.hWnd, GWL_EXSTYLE, Ret
'Set the opacity of the layered window to intA
SetLayeredWindowAttributes Me.hWnd, 0, intA, LWA_ALPHA
End Sub

there's no need to constantly set the GWL_EXSTYLE, I'd do something more like:

VB Code:

Option Explicit
 
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 crKey As Long, ByVal bAlpha As Byte, ByVal dwFlags As Long) As Long
 
Private Const LWA_ALPHA = &H2
Private Const GWL_EXSTYLE = (-20)
Private Const WS_EX_LAYERED = &H80000
 
Private Sub Form_Load()
    Dim lStyle As Long
    lStyle = GetWindowLong(Me.hWnd, GWL_EXSTYLE)
    SetWindowLong Me.hWnd, GWL_EXSTYLE, lStyle Or WS_EX_LAYERED
 
    SetLayeredWindowAttributes Me.hWnd, 0&, 0&, LWA_ALPHA
    Me.Show
    Timer1.Enabled = True
End Sub
 
Private Sub Timer1_timer()
    Static lAlpha As Long
    
    lAlpha = lAlpha + 3
    SetLayeredWindowAttributes Me.hWnd, 0&, lAlpha, LWA_ALPHA
    If lAlpha = 255 Then Timer1.Enabled = False
End Sub