Question

我的主目录中有一个目录为qt-everywhere-opensource-src-4.8.2。这个目录包含基本的QT包，但问题是，当我编译主目录中存在的普通Qt文件时，它显示错误，即找不到相应的QT包。但是，当我尝试编译正常的c文件时g ++和c ++文件由g ++然后它没有给出错误。我想要的是知道如何包含目录中的那些包。我想编译的文件是： -

#include <QApplication>
#include <QWidget>

   int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QWidget window;

    window.resize(250, 150);
    window.setWindowTitle("Simple example");
    window.show();

    return app.exec();
}

错误=

demo.cpp:1:24: error: QApplication: No such file or directory
demo.cpp:2:19: error: QWidget: No such file or directory
demo.cpp: In function âint main(int, char**)â:
demo.cpp:6: error: âQApplicationâ was not declared in this scope
demo.cpp:6: error: expected â;â before âappâ
demo.cpp:8: error: âQWidgetâ was not declared in this scope
demo.cpp:8: error: expected â;â before âwindowâ
demo.cpp:10: error: âwindowâ was not declared in this scope
demo.cpp:14: error: âappâ was not declared in this scope

Answer 1

您应该将此行添加到.pro文件中： QT += core gui

包括QT包

1 个答案: