在/usr/lib64/qt5/mkspecs/common/linux.conf中下面两处地方加上QtWidgets QMAKE_INCDIR =/usr/include/qt5/QtWidgets QMAKE_LIBS = -lQt5Widgets
QApplication在QtWidgets文件夹中，所以应该是<QtWidgets/QApplication>
在PyQt5中,QApplication和QMainWindow是两个非常核心的类,它们分别用于管理应用程序的控制流和提供一个主窗口框架。下面我将根据你的要求,分点回答你的问题,并附带必要的代码片段。 导入QApplication和QMainWindow类: 在PyQt5中,你需要从PyQt5.QtWidgets模块导入这两个类。正确的导入方式如下: python from PyQt5.Q...
In QT5, when I use this: #include<QApplication>, QT tells :no such file or directory, even though it is all right for previous version of QT. It turns out these files QApplication and so on have been moved to other places. How to correct? #include <QApplication> ---> #include <...
I have cross-compiled Qt5 with EGL support and now when I'm trying to run an application from the Qt examples like: #> ./hellogl_es2 -platform eglfs it returns straight away without any notice. The return code is 1. Even with other platform plugins the behavior is the same. Is ...
Qt5中的第一个程序EN升级到Qt5.X之后，原先解决的Qt显示中文乱码的方法突然不适用了，找了很多方式来...
In QT5, when I use this: #include<QApplication>, QT tells :no such file or directory, even though it is all right for previous version of QT. It turns out these files QApplication and so on have been moved to other places.
Qt经典出错信息之QApplication: No such file or directory这个出错信息一般是新手在编译Qt5第一个应用”Hello,World”的时候,翻开Qt编程的第一个例子。都说很简单。#include <QApplication>#include <QWidget>int main(int argc, char *argv[]){QApplica Qt QApplication qmake报错:‘/usr/lib/qt5/bin/qmak...
执行： sudoapt-getupdate再执行： sudoapt-getinstallqt-sdk安装 sudo apt-getinstallqt-sdk过程中可能出现下面界面，直接点“enter”键即可安装完成后出现：重新到原目录下编译那个程序（make），应该不会出现这个错误了
After that ,I build cross compile environment to static library, build the simple hello world, which has a file size of 17MB, there is no error showing this time when I run it, but the Qt GUI does not show up. Then I stop the application by Ctrl \+ C...