vs2010 命令行参数的简单写法

谢谢师兄告诉的方法，可以写到播客里面。。

在工程属性页的“调试”一栏里面，可以将命令参数当做dos cmd窗口下的命令行输入，

顺便附上代码吧，这个代码是opencv官方样例里面的：

#include "opencv2/core/core.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/video/background_segm.hpp"
#include "opencv2/highgui/highgui.hpp"
#include <stdio.h>

using namespace std;
using namespace cv;

static void help()
{
	printf("\nDo background segmentation, especially demonstrating the use of cvUpdateBGStatModel().\n"
		"Learns the background at the start and then segments.\n"
		"Learning is togged by the space key. Will read from file or camera\n"
		"Usage: \n"
		"			./bgfg_segm [--camera]=<use camera, if this key is present>, [--file_name]=<path to movie file> \n\n");
}

const char* keys =
{
	"{c |camera   |true    | use camera or not}"
	"{fn|file_name|tree.avi | movie file             }"
};

//this is a sample for foreground detection functions
int main(int argc, const char** argv)
{
	help();

	CommandLineParser parser(argc, argv, keys);
	bool useCamera = parser.get<bool>("camera");
	string file = parser.get<string>("file_name");
	VideoCapture cap;
	bool update_bg_model = true;

	if( useCamera )
		cap.open(0);
	else
		cap.open(file.c_str());
	parser.printParams();

	if( !cap.isOpened() )
	{
		printf("can not open camera or video file\n");
		return -1;
	}

	namedWindow("image", CV_WINDOW_NORMAL);
	namedWindow("foreground mask", CV_WINDOW_NORMAL);
	namedWindow("foreground image", CV_WINDOW_NORMAL);
	namedWindow("mean background image", CV_WINDOW_NORMAL);

	BackgroundSubtractorMOG2 bg_model(20,5,true);//(100, 3, 0.3, 5);

	Mat img, fgmask, fgimg;

	for(;;)
	{
		cap >> img;

		if( img.empty() )
			break;

		//cvtColor(_img, img, COLOR_BGR2GRAY);

		if( fgimg.empty() )
			fgimg.create(img.size(), img.type());

		//update the model
		bg_model(img, fgmask, update_bg_model ? 0.5 : 0);

		fgimg = Scalar::all(0);
		img.copyTo(fgimg, fgmask);

		Mat bgimg;
		bg_model.getBackgroundImage(bgimg);

		imshow("image", img);
		imshow("foreground mask", fgmask);
		imshow("foreground image", fgimg);
		if(!bgimg.empty())
			imshow("mean background image", bgimg );

		char k = (char)waitKey(30);
		if( k == 27 ) break;
		if( k == ' ' )
		{
			update_bg_model = !update_bg_model;
			if(update_bg_model)
				printf("Background update is on\n");
			else
				printf("Background update is off\n");
		}
	}

	return 0;
}