QDialog 不是这样的文件或目录 - Qt Windows
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QDialog not such file or directory - Qt Windows
提问by Nick L Scott
I just installed Qt Creator 2.6.1 based on Qt 5.0.
我刚刚安装了基于 Qt 5.0 的 Qt Creator 2.6.1。
I'm trying to open a project made on 4.8 but I can't compile it. It keeps showing me errors of "not such file or directory".
我正在尝试打开一个在 4.8 上制作的项目，但我无法编译它。它不断向我显示“不是这样的文件或目录”的错误。
error: C1083: Cannot open include file: 'QtGui/QApplication': No such file or directory
error: C1083: Cannot open include file: 'QDialog': No such file or directory
error: C1083: Cannot open include file: 'QMainWindow': No such file or directory
error: C1083: Cannot open include file: 'QWidget': No such file or directory
And many more.
还有很多。
I added the qmake.exe path to PATH...do I need to do something else?
我将 qmake.exe 路径添加到 PATH...我需要做其他事情吗？
回答by pnezis
Read the transition guides from Qt4to Qt5. Link1Link2Link3
One of the major internal infrastructural changes in Qt 5 compared to Qt 4 is the splitting of widgets from the QtGui module into a new QtWidgets module. This obviously will require buildsystem changes at least, but also causes the need for downstreams to add includes for headers which were not needed before, as those includes were removed from headers which now remain in the QtGui module.
Another includes-related issue in porting from Qt 4 to Qt 5 is dealing with includes for classes which have moved to the QtWidgets module. Whereas Qt 4 based code might use
与 Qt 4 相比，Qt 5 的主要内部基础结构变化之一是将小部件从 QtGui 模块拆分为新的 QtWidgets 模块。这显然至少需要更改构建系统，但也会导致下游需要为以前不需要的头文件添加包含，因为这些包含已从现在保留在 QtGui 模块中的头文件中删除。
从 Qt 4 移植到 Qt 5 的另一个与包含相关的问题是处理已移动到 QtWidgets 模块的类的包含。而基于 Qt 4 的代码可能会使用
#include <QtGui/QWidget>
This must be updated to either
#include <QtWidgets/QWidget>
Or more portably (Which works in Qt 4 and Qt 5):
#include <QWidget>
回答by rotovator
I had this problem, made two changes
我遇到了这个问题，做了两个更改
echo "QT += widgets" >> /fileProject.pro
add #include QDialog in the file containign QDialog declarations
echo "QT += widgets" >> /fileProject.pro
在包含 QDialog 声明的文件中添加 #include QDialog
previously including QtGui was enough but QT5 splits widgets into more .h files, thus making necessary to include them. For example QtMenuBar was included in QtMenu.h but now it requires QtMenuBar.h to be #included
以前包含 QtGui 就足够了，但 QT5 将小部件拆分为更多 .h 文件，因此需要包含它们。例如 QtMenuBar 包含在 QtMenu.h 中，但现在它要求 QtMenuBar.h 被 #included
