错误提示: ubuntu opencv imshow() 报错 windows.cpp报错 the function is not implemented If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvShowImage' 原因: opencv在ubuntu需要的一些依赖包没有安装.按照提示安装li
最近在使用 vagrant homestead 时,不小心在虚拟机上使用了 exit 命令退出虚拟机,导致再使用 vagrant up 时出现以下错误: Bringing machine 'laravel53test' up with 'virtualbox' provider... ==> laravel53test: Checking if box 'laravel/homestead' is up to date... ==> laravel53test: Clearing any pr
代码如下: HelloWorldScene.h #ifndef __HELLOWORLD_SCENE_H__#define __HELLOWORLD_SCENE_H__ #include "cocos2d.h"class HelloWorld : public cocos2d::Layer{public: // there's no 'id' in cpp, so we recommend returning the class instance pointer stati
在买来的控件(没有源码)的基础上,想加入QObject的一些特性,不得不多继承: class MyProgress : public CProgress, public QObject 但总是报错: release\moc_my_tool.cpp:80:12: error: 'qt_metacast' is not a member of 'CProgress' return CProgress::qt_metacast(_clname); 清除临时文件,重新编译几次后,仍是如此,心想难道QT不