qt4项目迁移到qt5,遇到的问题及解决办法

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warning: TARGET is empty

打开pro文件,你会发现:TARGET =,在后面加上你要生成的可执行程序名字即可。

error: QWidget: No such file or directory #include < QWidget>

在pro文件中添加:QT += core gui
greaterThan(QT_MAJOR_VERSION,4): QT += widgets

注意:我发现添加完之后,问题还没有解决,最后发现,我是复制上去的,中间的空格有字符问题,所以,能手敲就别粘贴!

error: QtGui/QAction: No such file or directory #include

#include <QtGui/QAction>#include <QtGui/QApplication>#include <QtGui/QButtonGroup>#include <QtGui/QHeaderView>#include <QtGui/QLabel>#include <QtGui/QPushButton>#include <QtGui/QWidget>

解决方法:去掉QtGui

#include <QAction>#include <QApplication>#include <QButtonGroup>#include <QHeaderView>#include <QLabel>#include <QPushButton>#include <QWidget>

error: ‘UnicodeUTF8’ is not a member of ‘QApplication’

例如:
QApplication::translate("emergency_call", "Form", 0, QApplication::UnicodeUTF8)
修改为:

QApplication::translate("emergency_call", "Form", 0)

error: invalid use of incomplete type ‘class QGraphicsWidget’

加上头文件:

#include <QGraphicsWidget>

error: ‘QGridLayout’ does not name a type

添加头文件:

#include <QGridLayout> 

error: ‘setCodecForTr’ is not a member of ‘QTextCodec’

直接删除这句话:

    QTextCodec::setCodecForTr(QTextCodec::codecForLocale());

推荐博客链接:http://blog.csdn.net/dbzhang800/article/details/7325698

error: ‘class QHeaderView’ has no member named ‘setResizeMode’

替换 setResizeMode 方法为 setSectionResizeMode ,see the docs

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