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Update the StylePlugin example

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QWindowsStyle will soon become an internal class, inherit
SimpleStyle from QProxyStyle. The documentation has been
updated accordingly.

Change-Id: Ib55f59729e980b93276e9c2903f13b5e46612ac8
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
This commit is contained in:
J-P Nurmi 2012-11-27 00:27:32 +01:00 committed by The Qt Project
parent ab0b8f3fce
commit 114f247773
2 changed files with 17 additions and 13 deletions
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26
examples/tools/doc/styleplugin.qdoc
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@ -34,10 +34,6 @@
\image stylepluginexample.png
On some platforms, the native style will prevent the button
from having a red background. In this case, try to run the example
in another style (e.g., plastique).
A plugin in Qt is a class stored in a shared library that can be
loaded by a QPluginLoader at run-time. When you create plugins in
Qt, they either extend a Qt application or Qt itself. Writing a
@ -52,14 +48,22 @@
class. Style plugins are loaded by Qt and made available through
QStyleFactory; we will look at this later. We have implemented \c
SimpleStylePlugin, which provides \c SimpleStyle. The new style
inherits QWindowsStyle and contributes to widget styling by
drawing button backgrounds in red - not a major contribution, but
it still makes a new style. We test the plugin with \c
StyleWindow, in which we display a QPushButton.
contributes to widget styling by drawing button backgrounds in
red - not a major contribution, but it still makes a new style.
The \c SimpleStyle and \c StyleWindow classes do not contain any
plugin specific functionality and their implementations are
trivial; we will therefore leap past them and head on to the \c
The new style is platform agnostic in the sense that it is not
based on any specific style implementation, but uses QProxyStyle
to merely tweak the looks in the current application style that
defaults to the native system style.
\note On some platforms, the native style will prevent the button
from having a red background. In this case, try to run the example
in another style (e.g., fusion).
We test the plugin with \c StyleWindow, in which we display a
QPushButton. The \c SimpleStyle and \c StyleWindow classes do not
contain any plugin specific functionality and their implementations
are trivial; we will therefore leap past them and head on to the \c
SimpleStylePlugin and the \c main() function. After we have looked
at that, we examine the plugin's profile.

4
examples/tools/styleplugin/plugin/simplestyle.h
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@ -41,13 +41,13 @@
#ifndef SIMPLESTYLE_H
#define SIMPLESTYLE_H
#include <QWindowsStyle>
#include <QProxyStyle>
QT_BEGIN_NAMESPACE
class QPalette;
QT_END_NAMESPACE
class SimpleStyle : public QWindowsStyle
class SimpleStyle : public QProxyStyle
{
Q_OBJECT