QLabel

The QLabel widget provides a text or image display.

Content	Setting
Plain text	Pass a QString to setText().
Rich text	Pass a QString that contains rich text to setText().
A pixmap	Pass a QPixmap to setPixmap().
A movie	Pass a QMovie to setMovie().
A number	Pass an int or a double to setNum(), which converts the number to plain text.
Nothing	The same as an empty plain text. This is the default. Set by clear().

Header:	#include <QLabel>
qmake:	QT += widgets
Inherits:	QFrame

插入图片：

插入动态图片：

    QMovie *movie = new QMovie("../cruiseSystem/images/2015111016272032815.gif");
    ui->label->setMovie(movie);
    QSize size = ui->label->size();
    movie->setScaledSize(size);
    movie->start();