English | Български |
日本語 | 中文

怎样改变QWidget的背景颜色

QWidget [doc.qt.nokia.com] 是所有用户界面对象的基类，其改变背景颜色的方法同样也适用于它们。

使用调色板

第一个例子演示如何使用“QPalette“改变背景颜色:http://doc.qt.nokia.com/latest/qpalette.html

  1. m_pMyWidget = new QWidget(this);
  2. m_pMyWidget->setGeometry(0,0,300,100);
  3. QPalette Pal(palette());
  4. // set black background
  5. Pal.setColor(QPalette::Background, Qt::black);
  6. m_pMyWidget->setAutoFillBackground(true);
  7. m_pMyWidget->setPalette(Pal);
  8. m_pMyWidget->show();

使用样式表

样式表包含对定制窗体样式的文字描述,参见“Qt Style Sheets document”:http://doc.qt.nokia.com/latest/stylesheet.html.

  1. m_pMyWidget = new QWidget(this);
  2. m_pMyWidget->setGeometry(0,0,300,100);
  3. m_pMyWidget->setStyleSheet("background-color:black;");
  4. m_pMyWidget->show();

以上改变窗体颜色的方法使用Qt SDK 1.1构建，并在Symbian^3 设备上测试成功。

Categories:

Creative Commons Attribution-ShareAlike 2.5 Generic

Content is available under

Creative Commons Attribution-ShareAlike 2.5 Generic

 

© 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