d:\My Documents\new\qtdemo\qtdemo.cpp|1|QApplication: No such file or directory|
d:\My Documents\new\qtdemo\qtdemo.cpp|2|QPushButton: No such file or directory|
d:\My Documents\new\qtdemo\qtdemo.cpp||In function `int main(int, char**)':|
d:\My Documents\new\qtdemo\qtdemo.cpp|6|error: `QApplication' was not declared in this scope|
d:\My Documents\new\qtdemo\qtdemo.cpp|6|error: expected `;' before "app"|
d:\My Documents\new\qtdemo\qtdemo.cpp|7|error: `QPushButton' was not declared in this scope|
d:\My Documents\new\qtdemo\qtdemo.cpp|7|error: expected `;' before "hello"|
d:\My Documents\new\qtdemo\qtdemo.cpp|8|error: `hello' was not declared in this scope|
d:\My Documents\new\qtdemo\qtdemo.cpp|10|error: `app' was not declared in this scope|
d:\My Documents\new\qtdemo\qtdemo.cpp|6|warning: unused variable 'QApplication'|
d:\My Documents\new\qtdemo\qtdemo.cpp|7|warning: unused variable 'QPushButton'|
d:\My Documents\new\qtdemo\qtdemo.cpp|10|warning: unused variable 'app'|
||=== Build finished: 8 errors, 3 warnings ===|
程序如下，是在书上直接打上去的：
#include <QApplication>
#include <QPushButton>
int main(int argc, char* argv[])
{
QApplication app(argc, argv);
QPushButton hello("Hello world!");
hello.resize(100, 30);
hello.show();
return app.exec();
}
另外说说，环境变量那里path、include和lib都设置好的。我只安装了一个版本的QT。另外，我在网上找到了一些方法，好像在include那里加上Qt/之类的方法，都不行。
请问会是什么原因呢？谢谢。
