把 C++ 应用程序移植到 Qt5

This topic talks about the Qt Widgets changes in Qt 5. The following step-by-step instructions take you through the changes required to port the Animated Tiles application to Qt 5:

Open the Animated Tiles project using Qt Creator.
编辑 main.cpp and replace the #include <QtGui> 实例与 #include <QtWidgets> . The Perl-script fixqt4headers.pl can be used to scan the source files of a project and perform the replacements.
Edit the animatedtiles.pro and add QT += widgets towards the end of the file.

注意： Qt GUI is included by default in all Qt applications unless excluded using the QT -= gui directive in the qmake project file.
Save the changes and run the application.

Once you see the application running, check whether it behaves as expected.

$"A snapshot of the \c animatedtiles application running on Ubuntu v12.04"$

It is also possible to keep the project compiling with Qt 4 and Qt 5. This requires:

Omitting the module name from all includes by running the fixqt4headers.pl script with the --strip-modules 选项。

Adding scopes depending on the version of Qt to the


.pro

files:

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

Introducing

#if

scopes around code using modified API:

#if QT_VERSION >= 0x050000
headerView

-


>

setSectionResizeMode(


QHeaderView



::

ResizeToContents);

#else

headerView

-


>

setResizeMode(


QHeaderView



::

ResizeToContents);

#endif

if you are using Qt WebKit ，见 Qt WebKit to Qt WebEngine porting instructions.

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把 C++ 应用程序移植到 Qt5

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