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                            [TOC]

## 概述
1.  可用于繪制 low-level  的圖形,字體,圖像到 QWidget 和 paint devices。
2. 可用于所有繼承 QPaintDevice 的對象,如 QWidget,QLabel,QPushButton
3.常用于 QWidget 的paintEvent(QPaintEvent *)

## 使用
```
void SimpleExampleWidget::paintEvent(QPaintEvent *)
{
  QPainter painter(this);
  painter.setPen(Qt::blue);
  painter.setFont(QFont("Arial", 30));
  painter.drawText(rect(), Qt::AlignCenter, "Qt");
}
```
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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