用vc6新建一个win32控制台程序，代码：

/*功能：实现加载jpg图片，并进行缩放显示开发环境: winXP + vc6 + openCV1.0头文件路径:D:\opensource\opencv1.0\cv\includeD:\opensource\opencv1.0\cxcore\includeD:\opensource\opencv1.0\otherlibs\highguilib文件目录:D:\opensource\opencv1.0\lib用到的lib文件: cxcore.lib cv.lib highgui.lib*/#include <stdio.h>
#include <cv.h>
#include <highgui.h>
#include <math.h>int main(int argc, char* argv[])
{const char *imgName[] = {"源图像", "缩放后图像"};IplImage *src = 0;			//源图像指针IplImage *dst = 0;			//目标图像指针float scale = 0.5f;			//缩放倍数为0.618倍CvSize dst_cvsize;			//目标图像尺寸if ( argc == 2 && (src = cvLoadImage(argv[1], CV_LOAD_IMAGE_UNCHANGED)) != 0 ){}else{src = cvLoadImage("3.jpg", CV_LOAD_IMAGE_UNCHANGED);if(!src){printf("Load source image failed, please check!\n");return -1;}}dst_cvsize.width = (int)(src->width * scale);		//目标图像的宽为源图象宽的scale倍dst_cvsize.height = (int)(src->height * scale);		//目标图像的高为源图象高的scale倍dst = cvCreateImage( dst_cvsize, src->depth, src->nChannels);	//构造目标图象//   cvResize(src, dst, CV_INTER_LINEAR);	//缩放源图像到目标图像cvResize(src, dst, CV_INTER_CUBIC);		//缩放源图像到目标图像cvNamedWindow(imgName[0], CV_WINDOW_AUTOSIZE);	//创建用于显示源图像的窗口cvNamedWindow(imgName[1], CV_WINDOW_AUTOSIZE);	//创建用于显示目标图像的窗口cvShowImage(imgName[0], src);			//显示源图像cvShowImage(imgName[1], dst);			//显示目标图像cvWaitKey(-1);							//等待用户响应cvReleaseImage(&src);					//释放源图像占用的内存cvReleaseImage(&dst);					//释放目标图像占用的内存cvDestroyWindow(imgName[0]);cvDestroyWindow(imgName[1]);return 0;
}

注：

本人的opencv1.0下载地址：http://nchc.dl.sourceforge.net/project/opencvlibrary/opencv-win/1.0/OpenCV_1.0.exe

安装路径: D:\opensource\opencv1.0