This article introduces various operations of the QFrame control in detail, such as: setting frame shape , setting frame shadow , setting line width , middle line width , setting frame style , setting size policy , setting style sheet, other articles, etc.
In actual development, an interface may contain more than a dozen controls, and manually adjusting their positions is time-consuming and laborious. QFrame is the base class of basic controls, and QWidget is the base class of QFrame. In essence, it does more work on the basis of widget, such as expanding some display beautification functions such as style shadows, and then encapsulates it into the QFrame class. In fact, it is style support based on QWidget. QWidget does not support style sheets , but QFrame does.
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QT QFrame control usage detailed directory
1 Set the frame shape
//设置框架的形状。形状可以是NoFrame、Box、Panel、WinPanel、HLine、VLine、StyledPanel等
ui->frame->setFrameShape(QFrame::Box);
2 Set frame shadow
//设置框架的阴影。阴影可以是Plain、Raised、Sunken
ui->frame->setFrameShadow(QFrame::Sunken);
3 Set the line width
//设置线宽
ui->frame->setLineWidth(2);4 middle line width
//设置中间线宽
ui->frame->setMidLineWidth(3);5 Set the frame style
//设置框架的样式。样式是形状和阴影的位或（OR）组合
ui->frame->setFrameStyle(QFrame::Panel | QFrame::Raised);
6 Set size policy
//设置大小策略，这决定了控件如何在布局中改变大小
ui->frame->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);7 Set up style sheets
//设置样式表，这可以用来自定义控件的外观
ui->frame->setStyleSheet("background-color: blue;");8 other articles
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