Source Code Webcam (Visual Basic)

Yang perlu disiapkan di jendela VB :

1. Sebuah Form : Form1
2. Tiga CommandButtom dengan nama : 1.cmdCapture, 2. cmdClose, 3.cmdVideoFormat
3. Sebuah PictureBox : PictureBox
4. Sebuah Module

Source Code Form 1 :

Dim hwdc As Long
Dim startcap As Boolean
Private Sub cmdCapture_Click()
Dim temp As Long

hwdc = capCreateCaptureWindow("Dixanta Vision System", _
ws_child Or ws_visible, 0, 0, 320, 240, Picture1.hWnd, 0)
If (hwdc <> 0) Then
temp = SendMessage(hwdc, wm_cap_driver_connect, 0, 0)
temp = SendMessage(hwdc, wm_cap_set_preview, 1, 0)
temp = SendMessage(hwdc, WM_CAP_SET_PREVIEWRATE, 30, 0)
startcap = True
Else
MsgBox ("No Webcam found")
End If
End Sub

Private Sub cmdClose_Click()
Dim temp As Long
If startcap = True Then
temp = SendMessage(hwdc, WM_CAP_DRIVER_DISCONNECT, 0&, 0&)
startcap = False
End If
End Sub

Private Sub cmdVideoFormat_Click()
Dim temp As Long
If startcap = True Then
temp = SendMessage(hwdc, WM_CAP_DLG_VIDEOFORMAT, 0&, 0&)
End If
End Sub

Batas Source Code Form 1

Source Code Module :

Global Const ws_child As Long = &H40000000
Global Const ws_visible As Long = &H10000000
Global Const WM_USER = 1024
Global Const wm_cap_driver_connect = WM_USER + 10
Global Const wm_cap_set_preview = WM_USER + 50
Global Const WM_CAP_SET_PREVIEWRATE = WM_USER + 52
Global Const WM_CAP_DRIVER_DISCONNECT As Long = WM_USER + 11
Global Const WM_CAP_DLG_VIDEOFORMAT As Long = WM_USER + 41
Declare Function SendMessage Lib "user32" Alias "SendMessageA" _
(ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, _
ByVal lParam As Long) As Long
Declare Function capCreateCaptureWindow Lib "avicap32.dll" Alias _
"capCreateCaptureWindowA" (ByVal a As String, ByVal b As Long, _
ByVal c As Integer, ByVal d As Integer, _
ByVal e As Integer, ByVal f As Integer, _
ByVal g As Long, ByVal h As Integer) As Long