• Home
  •  
  • FAQ Home
  •  
  • How can my stylesheet account for custom properties?

Sorted by Category:

Organized by tag:

-display (1) -help (1) -mdd (2) -mt (1) -no-cups (1) -no-exceptions (1) -no-script (1) -no-stl (1) -no-webkit (1) -nokeyboard (1) -nomouse (1) -vmargs (1) -xmx (1) .ini (1) .lproj (1) .ncb (1) .net (2) .qm (2) .sln (1) .suo (1)

How can my stylesheet account for custom properties?

In order to account for custom properties in your stylesheet, you can use the Property Selector, see:

http://doc.qt.nokia.com/stylesheet-syntax.html#selector-types
http://doc.qt.nokia.com/stylesheet-examples.html#customizing-using-dynamic-properties

If the value of the Qt property changes after the style sheet has been set, you will probably have to force a style sheet recomputation. This can be done by calling

  1. style()->unpolish(theWidget);
  2. style()->polish(theWidget);
  3.  
  4.  

Alternatively, you can unset the style sheet and set it again, but this is more expensive than the first solution.

The following example demonstrates how this can be done:

  1. #include <QtGui>
  2.  
  3. class LineEdit : public QLineEdit
  4. {
  5.   Q_OBJECT
  6. public:
  7.   LineEdit(QWidget *wid) : QLineEdit(wid)
  8.   {
  9.     setProperty("theMaximum", false);
  10.     setStyleSheet("QLineEdit[theMaximum=\"true\"] {background-color: black}\
  11.            QLineEdit[theMaximum=\"false\"] {background-color: red}");
  12.     oldSheet = styleSheet();
  13.     QTimer::singleShot(3000, this, SLOT(test1()));
  14.   }
  15.   public slots:
  16.     void test1()
  17.     {
  18.       setProperty("theMaximum", true);
  19. #if 1
  20.       style()->unpolish(this);
  21.       style()->polish(this);
  22. #else
  23.       setStyleSheet(styleSheet());
  24. #endif
  25.     }
  26. private:
  27.   QString oldSheet;
  28. };
  29.  
  30. #include "main.moc"
  31.  
  32. int main(int argc, char** argv)
  33. {
  34.   QApplication app(argc, argv);
  35.   QWidget window;
  36.   QVBoxLayout *layout = new QVBoxLayout(&window);
  37.   layout->addWidget(new LineEdit(&window));
  38.   layout->addWidget(new QLabel("This is a LineEdit", &window));
  39.   window.show();
  40.   return app.exec();
  41.  
  42. }
  43.  

No comments

Write a comment

Sorry, you must be logged in to post a comment.

 

© 2011 Qt Project Hosting. Qt® and the Qt logo is a registered trade mark of Nokia Corporation and/or its subsidiaries and is used pursuant to a license from Nokia Corporation and/or its subsidiaries.
All other trademarks are property of their respective owners. Privacy Policy
This site is hosted by Gitorious AS. Your use of this web site is governed by these terms of service.

Qt Project Hosting, P.O. Box 4332 Nydalen, 0402 Oslo, Norway. Phone: +47 21 60 27 32. Org. Nr. 997 447 913