Qt-interest Archive, January 2008
Style sheets in subclasses of QWidget
Message 1 in thread
Hi,
I use Qt 4.3.3 and want to use the setStyleSheet() method of QWidget to set a custom style sheet for a widget. If the widget is a QWidget, everything works as expected, but if I use my own subclass, the stylesheet is not applied. Consider the following example:
---------- test.cpp
#include <QApplication>
#include <QMainWindow>
#include <QVBoxLayout>
#include "mywidget.h"
int main(int argc, char ** argv) {
QApplication app(argc, argv);
MyWidget * w = new MyWidget();
w->setStyleSheet("* { background-color: blue; }");
QMainWindow mw;
mw.setCentralWidget(w);
mw.show();
return app.exec();
}
----------
---------- mywidget.h
#ifndef MYWIDGET_H
#define MYWIDGET_H
#include <QWidget>
class MyWidget : public QWidget {
Q_OBJECT
public:
MyWidget(QWidget * parent = NULL);
};
#endif
----------
---------- mywidget.cpp
#include "mywidget.h"
MyWidget::MyWidget(QWidget * parent) : QWidget(parent) {}
----------
If I replace MyWidget with QWidget in test.cpp, the stylesheet is correctly applied. Is this behavior a bug in Qt or do I overlook something?
Thanks,
Henning
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Message 2 in thread
I guess I found the solution: If QWidget::paintEvent() is
reimplemented as described in
http://trolltech.com/developer/task-tracker/index_html?method=entry&id=166742
the example works.
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