Public Declare Function SendMessage Lib "USER32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Public Declare Function capCreateCaptureWindow Lib "avicap32.dll" Alias "capCreateCaptureWindowA" (ByVal lpszWindowName As String, ByVal dwStyle As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hwndParent As Long, ByVal nID As Long) As Long

Public mCapHwnd As Long

Public Const CONNECT As Long = 1034
Public Const DISCONNECT As Long = 1035
Public Const GET_FRAME As Long = 1084
Public Const COPY As Long = 1054

Private Sub Form_Load()
On Error Resume Next
mCapHwnd = capCreateCaptureWindow("WebcamCapture", 0, 0, 0, 320, 240, Me.hwnd, 0)
DoEvents: SendMessage mCapHwnd, CONNECT, 0, 0

End Sub

Private Sub Form_Unload(Cancel As Integer)
On Error Resume Next
DoEvents: SendMessage mCapHwnd, DISCONNECT, 0, 0
End Sub

Private Sub Timer1_Timer()
On Error Resume Next
SendMessage mCapHwnd, GET_FRAME, 0, 0
SendMessage mCapHwnd, COPY, 0, 0
Picture1.Picture = Clipboard.GetData
End Sub

Public Declare Function SendMessage Lib "USER32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Public Declare Function capCreateCaptureWindow Lib "avicap32.dll" Alias "capCreateCaptureWindowA" (ByVal lpszWindowName As String, ByVal dwStyle As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hwndParent As Long, ByVal nID As Long) As Long

Public mCapHwnd As Long

Public Const CONNECT As Long = 1034
Public Const DISCONNECT As Long = 1035
Public Const GET_FRAME As Long = 1084
Public Const COPY As Long = 1054

Private Sub cmdStart_Click()
cmdStart.Enabled = False
cmdStop.Enabled = True
'Setup a capture window (You can replace "WebcamCapture" with watever you want)
mCapHwnd = capCreateCaptureWindow("WebcamCapture", 0, 0, 0, 320, 240, Me.hwnd, 0)

DoEvents: SendMessage mCapHwnd, CONNECT, 0, 0
tmrMain.Enabled = True
End Sub

Private Sub cmdStop_Click()
cmdStart.Enabled = True
cmdStop.Enabled = False
tmrMain.Enabled = False

DoEvents: SendMessage mCapHwnd, DISCONNECT, 0, 0
End Sub

Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
If cmdStop.Enabled = False Then
'Se asegura de la conexion
DoEvents: SendMessage mCapHwnd, DISCONNECT, 0, 0
End If
End Sub

Private Sub tmrMain_Timer()
On Error Resume Next
'Obtiene el frame actual
        SendMessage mCapHwnd, GET_FRAME, 0, 0
'Copia el Frame 
        SendMessage mCapHwnd, COPY, 0, 0
'Pega los datos en el picture
        picOutput.Picture = Clipboard.GetData
'Limpia clipboard
        Clipboard.Clear
End Sub