Ciao a tutti, sto facendo un applicativo (framework 4) che si interfaccia con la webcam, e per fare questo uso la libreria avicap32.dll.
Sostanzialmente, questo è il codice che uso:
codice:
    Private Const WM_CAP As Short = &H400S
    Private Const WM_USER As Long = &H400
    Private Const WM_CAP_DRIVER_CONNECT As Integer = WM_CAP + 10
    Private Const WM_CAP_SET_PREVIEW As Integer = WM_CAP + 50
    Private Const WM_CAP_SET_PREVIEWRATE As Integer = WM_CAP + 52
    Private Const WM_CAP_SET_SCALE As Integer = WM_CAP + 53
    Private Const WS_CHILD As Integer = &H40000000
    Private Const WS_VISIBLE As Integer = &H10000000
    Private Const SWP_NOMOVE As Short = &H2S
    Private Const SWP_NOSIZE As Short = 1
    Private Const SWP_NOZORDER As Short = &H4S
    Private Const HWND_BOTTOM As Short = 1

    Public Sub StartCam()
        hWnd = capCreateCaptureWindowA("Webcam", WS_VISIBLE Or WS_CHILD, 0, 0, 320, 240, picWebCam.Handle.ToInt32, 0)
        If SendMessage(hWnd, WM_CAP_DRIVER_CONNECT, 0, 0) Then
            SendMessage(hWnd, WM_CAP_SET_SCALE, True, 0)
            SendMessage(hWnd, WM_CAP_SET_PREVIEWRATE, 33, 0)
            SendMessage(hWnd, WM_CAP_SET_PREVIEW, 1, 0)
            SetWindowPos(hWnd, HWND_BOTTOM, 0, 0, 320, 240, SWP_NOMOVE Or SWP_NOZORDER)
        Else
            DestroyWindow(hWnd)
        End If
    End Sub
Se compilo il tutto mettendo come piattaforma AnyCPU, la cam si interfaccia e si vede, mentre se compilo mettendo x86, la cam si interfaccia (vedo il led di online) ma non si vede la trasmissione video (la picturebox rimane nera). Non ci sono messaggi di errore o altro...
Secondo voi, da cosa potrebbe dipendere?