QT use of undeclared identifier 'cout' 在QT 5.12中直接使用cout将提示错误如下: 添加库 #include<iostream>,并将cout&end改为std::cout&std::endl 代码如下: 1#include"mainwindow.h"2#include<iostream>3#include <QApplication>45intmain(intargc,char*argv[])6{7QApplication a(argc, argv);8MainWin...
void UIDTextFillin(Ui::MainWindow *Cui){//子涵数内容QMessageBox::warning(Cui,tr("内容长度不正确"),tr("原始栏内容长度不符合"));//Cui后没报错,但tr还是报错。error: Use of undeclared identifier 'tr'} a1a2x3 初级粉丝 1 抓狂了,上网搜索方法解决了tr问题,变成QMessageBox出错了...E:\WorkF...
这个错误大多是因为没有按照要求导入相应的链接库，以至于无法调用相应的类库。在vs或者codeblocks环境下可以通过选项设置之类的东西添加相应的链接库。但是在Qt Creator默认是没有这种东西的，而是提供了另一种途径，即每个项目必然会有的.pro文件，类似于：
char 4: unterminated address regex Scanning dependencies of target qtbase [ 94%] Building CXX object CMakeFiles/qtbase.dir/qtbase_automoc.cpp.obj Linking CXX shared library qtbase.dll d001289.o:(.idata$2+0x0): multiple definition of `_head_Qt5...
‘ui_mainwindow.h’ file not found. Recieving [main.o] error 2 in Qt creator [ui_MainWindow.h] Error 2 #4, Error in shell script– red herring, can be discarded fatal error: QtGui/QApplication: No such file or directory Patch Qmake to use specifics ( and relative) paths ...
I am getting some problems in my Main.cpp file, I have attached my whole fime, if someone could help me out, it would be really appreciated. Here's mu main.cpp file : #include "mainwindow.h" #include <QApplication> #include <QDebug> #include <windows.h>