用普通USB摄像头捕捉图像
.......................\Webcam
.......................\......\dir.mnu
.......................\......\LICENSE.txt
.......................\......\README.pdf
.......................\......\Webcam Capture.llb
.......................\......\Webcam Conversion.llb
.......................\......\Webcam Examples.llb
.......................\......\Webcam Typedefs.llb
.......................\......\WebcamGrab.dll
.......................\Webcam DLL
.......................\..........\dll.c
.......................\..........\DLL.dsp
.......................\..........\DLL.dsw
.......................\..........\dll.h
.......................\..........\DLL.ncb
.......................\..........\DLL.opt
.......................\..........\DLL.plg
.......................\..........\test.vi