Làm cho ứng dụng từ từ rõ dần khi Load và mờ dần khi Unload Binh khí : 2 cái đồng hồ Xuất xứ : www.caulacbovb.com Đoạn mã : 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 LWA_ALPHA = &H2 Private Const WS_EX_LAYERED = &H80000 Dim m_lAlpha Private Sub Form_Load() Dim lStyle As Long lStyle = GetWindowLong(Me.hWnd, GWL_EXSTYLE) lStyle = lStyle Or WS_EX_LAYERED SetWindowLong Me.hWnd, GWL_EXSTYLE, lStyle SetLayeredWindowAttributes Me.hWnd, 0, 0, LWA_ALPHA Timer1.Interval = 100 Timer2.Interval = 100 Timer2.Enabled = False Timer1.Enabled = True End Sub Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer) If UnloadMode <> vbFormCode Then Cancel = True Timer2.Enabled = True End If End Sub Private Sub Timer1_Timer() m_lAlpha = m_lAlpha + 15 If (m_lAlpha > 255) Then m_lAlpha = 255 Timer1.Enabled = False Else SetLayeredWindowAttributes Me.hWnd, 0, m_lAlpha, LWA_ALPHA End If End Sub Private Sub Timer2_Timer() m_lAlpha = m_lAlpha - 15 If (m_lAlpha < 0) Then m_lAlpha = 0 Unload Me Else SetLayeredWindowAttributes Me.hWnd, 0, m_lAlpha, LWA_ALPHA End If End Sub . Làm cho ứng dụng từ từ rõ dần khi Load và mờ dần khi Unload Binh khí : 2 cái đồng hồ Xuất xứ : www.caulacbovb.com. Timer1.Enabled = True End Sub Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer) If UnloadMode <> vbFormCode Then Cancel = True Timer2.Enabled