qpainter绘制矩形（QPainter绘制矩形边框教程）

科技前沿 • 2025-05-04 14:03 • 阅读 41

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PyQt5是Python语言的GUI编程工具包，其中包含了QPainter类，可以用来绘制各种图形。下面是一些常见的图形及其绘制方法：

直线

from <em>PyQt</em>5.<em>Qt</em>Gui import QPainter, QPen from <em>PyQt</em>5.<em>Qt</em>Core import <em>Qt</em> pen = QPen(<em>Qt</em>.black, 2, <em>Qt</em>.SolidLine) painter = QPainter() painter.begin(self) painter.setPen(pen) painter.drawLine(0, 0, 100, 100) painter.end()

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矩形

讯享网from <em>PyQt</em>5.<em>Qt</em>Gui import QPainter, QPen, QBrush from <em>PyQt</em>5.<em>Qt</em>Core import <em>Qt</em> pen = QPen(<em>Qt</em>.black, 2, <em>Qt</em>.SolidLine) brush = QBrush(<em>Qt</em>.gray) painter = QPainter() painter.begin(self) painter.setPen(pen) painter.setBrush(brush) painter.drawRect(0, 0, 100, 100) painter.end()

圆形

from <em>PyQt</em>5.<em>Qt</em>Gui import QPainter, QPen, QBrush from <em>PyQt</em>5.<em>Qt</em>Core import <em>Qt</em> pen = QPen(<em>Qt</em>.black, 2, <em>Qt</em>.SolidLine) brush = QBrush(<em>Qt</em>.gray) painter = QPainter() painter.begin(self) painter.setPen(pen) painter.setBrush(brush) painter.drawEllipse(0, 0, 100, 100) painter.end()

文字

讯享网from <em>PyQt</em>5.<em>Qt</em>Gui import QPainter, QFont from <em>PyQt</em>5.<em>Qt</em>Core import <em>Qt</em> font = QFont(&quot;Arial&quot;, 16) painter = QPainter() painter.begin(self) painter.setFont(font) painter.drawText(0, 0, &quot;Hello <em>PyQt</em>5&quot;) painter.end()

多边形

from <em>PyQt</em>5.<em>Qt</em>Gui import QPainter, QPen, QBrush from <em>PyQt</em>5.<em>Qt</em>Core import <em>Qt</em>, QPoint pen = QPen(<em>Qt</em>.black, 2, <em>Qt</em>.SolidLine) brush = QBrush(<em>Qt</em>.gray) painter = QPainter() painter.begin(self) painter.setPen(pen) painter.setBrush(brush) points = [QPoint(0, 0), QPoint(50, 50), QPoint(100, 0)] painter.drawPolygon(points) painter.end()

以上只是一些常见的图形，QPainter还支持更多的绘制方法，比如曲线、扇形等等，具体可以参考官方文档。

qpainter绘制矩形（QPainter绘制矩形边框教程）

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