QTextEdit笔记

/* 获得焦点重载函数 */
void focusInEvent(QFocusEvent *event); 
/* 失去焦点重载函数 */
void focusOutEvent(QFocusEvent *event); 

QTextEdit {
    border-style: none;
    border-radius: 5px;
    padding: 3px;
    background: transparent;
}

QTextEdit:focus {
    border: 2px solid #3498db;
}

* setEnabled(false)使用样式：
```css
QTextEdit:!enabled {
    color: #525252; 
} 

QTextEdit:enabled {
    color: #525252; 
}

setReadOnly(true)
setEnable(false)

horizontalScrollBar()->hide();
horizontalScrollBar()->setEnabled(false);
setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

verticalScrollBar()->hide();
verticalScrollBar()->setEnabled(false);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

QFont fontt;
font.setFamily("默认");
fontt.setPixelSize(14);
setFont(ft);

void onTextChanged()
{
    QTextDocument *document = this->document();
    if (document) {
        document->adjustSize();
        this->setFixedSize(document->size().toSize());
    }
}

connect(pointer, SIGNAL(textChanged()), pointer, SLOT(onTextChanged()));

document().linecout()

setFocus(Qt::MouseFocusReason);