opencv imshow的鼠标事件实验

最新推荐文章于 2025-03-17 16:55:40 发布

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最新推荐文章于 2025-03-17 16:55:40 发布

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分类专栏： opencv计算机视觉

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本章内容

1. imshow鼠标时间捕获

1.鼠标事件实验

输出结果:

程序源码

#include<opencv2/opencv.hpp>
#include<iostream>

void onMouse(int event, int x, int y, int flags, void* param); // 鼠标事件响应槽函数
cv::String winTitle = "input Image";

int main(int argc, char** argv) {
    /* 本章内容
     1. 鼠标时间捕获

    */

    cv::String fileName = "/home/wang/dev/Image/mv.jpeg";
    cv::Mat src = cv::imread(fileName);
    if(src.data == NULL ){
        std::cout << "文件读入失败" << std::endl;
        return -1;
    }
    cv::imshow(winTitle, src);
    int key;
    while(1){
        key = cv::waitKey(20);
        if(('q' == key)||('Q' == key)){
                std::cout << "退出系统" << std::endl;
                break;
        }
        cv::setMouseCallback(winTitle,onMouse);
    }
    return 0;
}

void onMouse(int event, int x, int y, int flags, void* param){
    switch(event){
        case cv::EVENT_LBUTTONDOWN:
        std::cout << "鼠标左键按下" << std::endl;
        break;
    case cv::EVENT_MOUSEMOVE:
        std::cout << "鼠标移动" << std::endl;
        break;
    case cv::EVENT_LBUTTONUP:
        std::cout << "鼠标左键抬起" << std::endl;
        break;
    default:
        break;
    }
}