salut voici un exemple de l'API-Guide qui peut t'aider
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 Form_Load() 'KPD-Team 2000 'URL: http://www.allapi.net/ 'E-Mail: KPDTeam@Allapi.net Dim Ret As Long 'Set the window style to 'Layered' 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 128 SetLayeredWindowAttributes Me.hWnd, 0, 128, LWA_ALPHA End Sub
CNTJC
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