QPalette设置各种背景色

          设置空间背景色

         setAutoFillBackground(true);  //设置自动填充

 QPalette palette = this->palette();

 palette.setColor(QPalette::Background,Qt::black);

 setPalette(palette);

注：
QPalette::ColorRole

QPalette::Window	10	通常指窗口部件的背景色
QPalette::Background	Window	This value is obsolete. Use Window instead.
QPalette::WindowText	0	通常指窗口不见的前景色;
QPalette::Foreground	WindowText	This value is obsolete. Use WindowText instead.
QPalette::Base	9	指文本输入窗口部件(比如QtextEdit,QLinedit等)的背景色.
QPalette::AlternateBase	16	Used as the alternate background color in views with alternating row colors (seeQAbstractItemView::setAlternatingRowColors()).
QPalette::ToolTipBase	18	提示符背景色
QPalette::ToolTipText	19	提示符前景色
QPalette::Text	6	与QPalette::Base一块使用,指文本输入窗口部件的前景色;
QPalette::Button	1	指按钮窗口部件的背景色;
QPalette::ButtonText	8	指按钮窗口部件的前景色.
QPalette::BrightText	7	A text color that is very different from WindowText, and contrasts well with e.g. Dark. Typically used for text that needs to be drawn where Text or WindowText would give poor contrast, such as on pressed push buttons. Note that text colors can be used for things other than just words; text colors are usually used for text, but it's quite common to use the text color roles for lines, icons, etc.