FoxPro/Visual FoxPro - Capturar fotos desde webcam??

De que manera puedo llamar a una webcam para que me muestre lo que observa dentro de un formulario y después capturar dicha imagen y guardarla en disco duro???

Lo que pretendo es crear una base de datos de personal pero al dar de alta los registros poder capturar la imágen en ese momento.

Gracias por su ayuda!

Prueba con este código ...

Local oForm
oForm = Createobject("Tform")
oForm.Show(1)
* end of main

Define Class Tform As Form
#Define WM_CAP_START 0x0400
#Define WM_CAP_DRIVER_CONNECT (WM_CAP_START+10)
#Define WM_CAP_DRIVER_DISCONNECT (WM_CAP_START+11)
#Define WM_CAP_DRIVER_GET_CAPS (WM_CAP_START+14)
#Define WM_CAP_SET_PREVIEW (WM_CAP_START+50)
#Define WM_CAP_SET_OVERLAY (WM_CAP_START+51)
#Define WM_CAP_SET_PREVIEWRATE (WM_CAP_START+52)
#Define WM_CAP_GET_STATUS (WM_CAP_START+54)
#Define WM_CAP_GRAB_FRAME (WM_CAP_START+60)

Width=500
Height=400
AutoCenter=.T.
Caption="Using Video Capture"
MinButton=.F.
MaxButton=.F.
hWindow=0
hCapture=0
capWidth=0
capHeight=0
capOverlay=0

Add Object cmdGetFrame As CommandButton With Default=.T.,;
Left=15, Top=264, Height=27, Width=90, Caption="Get Frame",;
Enabled=.F.

Add Object cmdPreview As CommandButton With Default=.T.,;
Left=106, Top=264, Height=27, Width=100, Caption="Preview Video",;
Enabled=.F.

Add Object cmdClose As CommandButton With Cancel=.T.,;
Left=250, Top=264, Height=27, Width=70, Caption="Close"

Procedure Activate
If This.hWindow = 0
Declare Integer GetFocus In user32
This.hWindow = GetFocus()
This.CreateCaptureWindow
This.DriverConnect
Endif

Procedure Destroy
This.ReleaseCaptureWindow

Procedure cmdClose.Click
Thisform.Release

Procedure cmdGetFrame.Click
Thisform.GetFrame

Procedure cmdPreview.Click
Thisform.StartPreview

Procedure GetFrame
This.msg(WM_CAP_GRAB_FRAME, 0,0)

Procedure CreateCaptureWindow
#Define WS_CHILD 0x40000000
#Define WS_VISIBLE 0x10000000

Declare Integer capCreateCaptureWindow In avicap32;
STRING lpszWindowName, Long dwStyle,;
INTEGER x, Integer Y,;
INTEGER nWidth, Integer nHeight,;
INTEGER hParent, Integer nID

This.hCapture = capCreateCaptureWindow("", WS_CHILD+WS_VISIBLE, 10,8,320,240, This.hWindow, 1)

#DEFINE WM_CAP_FILE_SAVEDIB (WM_CAP_START + 25)

LOCAL lcFile
lcFile = "c:\sample.bmp"

THIS.msg(WM_CAP_GRAB_FRAME, 0,0)
THIS.msg(WM_CAP_FILE_SAVEDIB, 0, lcFile,1)

Procedure DriverConnect
This.msg(WM_CAP_DRIVER_CONNECT, 0,0)

If This.IsCaptureConnected()
This.GetCaptureDimensions
Store .T. To This.cmdGetFrame.Enabled, THIS.cmdPreview.Enabled
This.Caption = This.Caption + ": connected, " + lTRIM(Str(This.capWidth)) + "x" + LTRIM(Str(This.capHeight))
Else
This.Caption = This.Caption + ": failed to connect"
EndIf

Procedure DriverDisconnect
This.msg(WM_CAP_DRIVER_DISCONNECT, 0,0)

Procedure ReleaseCaptureWindow
If This.hCapture <> 0
This.DriverDisconnect
Declare Integer DestroyWindow In user32 Integer HWnd
= DestroyWindow(This.hCapture)
This.hCapture = 0
Endif

Procedure msg(msg, wParam, Lparam, nMode)
If This.hCapture = 0
Return
Endif

If Vartype(nMode) <> "N" Or nMode=0
Declare Integer SendMessage In user32;
INTEGER HWnd, Integer Msg,;
INTEGER wParam, Integer Lparam
= SendMessage(This.hCapture, msg, wParam, Lparam)
Else
Declare Integer SendMessage In user32;
INTEGER HWnd, Integer Msg,;
INTEGER wParam, String @Lparam
= SendMessage(This.hCapture, msg, wParam, @Lparam)
Endif

Function IsCaptureConnected
* analyzing fCaptureInitialized member of the CAPDRIVERCAPS structure
#Define CAPDRIVERCAPS_SIZE 44
Local cBuffer, nResult
cBuffer = Repli(Chr(0),CAPDRIVERCAPS_SIZE)
This.msg(WM_CAP_DRIVER_GET_CAPS, Len(cBuffer), @cBuffer, 1)
This.capOverlay = buf2dword(Substr(cBuffer,5,4))
nResult = Asc(Substr(cBuffer, 21,1))
Return (nResult<>0)

Procedure GetCaptureDimensions
* reading uiImageWidth and uiImageHeight members
* of the CAPSTATUS structure
#Define CAPSTATUS_SIZE 76
Local cBuffer
cBuffer = Repli(Chr(0), CAPSTATUS_SIZE)
This.msg(WM_CAP_GET_STATUS, Len(cBuffer), @cBuffer, 1)
This.capWidth = buf2dword(Substr(cBuffer,1,4))
This.capHeight = buf2dword(Substr(cBuffer,5,4))

Procedure StartPreview
This.msg(WM_CAP_SET_PREVIEWRATE, 30,0)
This.msg(WM_CAP_SET_PREVIEW, 1,0)
If This.capOverlay <> 0
This.msg(WM_CAP_SET_OVERLAY, 1,0)
Endif

Procedure StopPreview
This.msg(WM_CAP_SET_PREVIEW, 0,0)
Enddefine

Function buf2dword(lcBuffer)
Return Asc(Substr(lcBuffer, 1,1)) + ;
BitLShift(Asc(Substr(lcBuffer, 2,1)), 8) +;
BitLShift(Asc(Substr(lcBuffer, 3,1)), 16) +;
BitLShift(Asc(Substr(lcBuffer, 4,1)), 24)

David Amador Tapia
WebMaster "La Web de Davphantom"
www.davphantom.net
Cartagena. Colombia

encontre tu codigo y es de mucha utilidad--- el problema que tengo ahora es que no logro entender en que momento se envia la foto tomada a un archivo, necesito permitir sobreescribir la imagen en pantalla en un nombre de archivo especifico... seria mucha molestia pedir tu apoyo para esto?

de antemano mil gracias!