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   源码介绍

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'This program check whether webcam is available or not
' if available then capture and displays in picture box

'Created by Dixanta Bahadur Shrestha
'Created Date: 12-March-2006


'Programmer does not garuntees if  not functions well

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