如何显示从设备捕获并通过com端口连接的视频提要? [英] how to show a video feed captured from a device and connected via com port ?

问题描述

如何显示从设备捕获并通过com端口连接的视频供稿?

how to show a video feed captured from a device and connected via com port ???

推荐答案

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Please stop repeating this same question. If you have not received a satisfactory answer then it is likely that nobody has the answer you need. Go and do some research for yourself using Google and MSDN.

Dim hwdc As Long
Dim startcap As Boolean

Private Sub cmdCapture_Click()
Dim temp As Long

  hwdc = capCreateCaptureWindow("NeV0 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

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