Tuesday, June 30, 2009

Transparent Form

Code following to make your form become transparently.First of all, make a last module insert code following:

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 GWL_EXSTYLE = (-20)
Private Const WS_EX_LAYERED = &H80000
Private Const LWA_ALPHA = &H2

Public Function MakeTransparent(ByVal hwnd As Long, Perc As Integer) As Long
Dim Msg As Long
On Error Resume Next
If Perc < 0 Or Perc > 255 Then
MakeTransparent = 1
Else
Msg = GetWindowLong(hwnd, GWL_EXSTYLE)
Msg = Msg Or WS_EX_LAYERED
SetWindowLong hwnd, GWL_EXSTYLE, Msg
SetLayeredWindowAttributes hwnd, 0, Perc, LWA_ALPHA
MakeTransparent = 0
End If
If Err Then
MakeTransparent = 2
End If
End Function


To trying it, make a form, and enhance commandbutton at your form. Double click at your commandbutton, then insert code following:
MakeTransparent Me.hWNd, 100

If value of Perc 0, you will not can to see your form.


1 comment:

  1. gr8 code working much fine my dear fried.

    you add much value for my project

    ReplyDelete