CanvasContext.setLineWidth

解释：设置线条的宽度。

方法参数

Number lineWidthlineWidth 参数说明：线条的宽度（单位是 px ）。

示例 

在开发者工具中打开

图片示例

代码示例

<canvas canvas-id="myCanvas" class="myCanvas" />

Page({
    onLoad() {
        const canvasContext = swan.createCanvasContext('myCanvas');
        canvasContext.beginPath();
        canvasContext.moveTo(30, 10);
        canvasContext.lineTo(200, 10);
        canvasContext.stroke();

        canvasContext.beginPath();
        canvasContext.setLineWidth(5);
        canvasContext.moveTo(50, 30);
        canvasContext.lineTo(200, 30);
        canvasContext.stroke();

        canvasContext.beginPath();
        canvasContext.setLineWidth(10);
        canvasContext.moveTo(70, 50);
        canvasContext.lineTo(200, 50);
        canvasContext.stroke();

        canvasContext.beginPath();
        canvasContext.setLineWidth(15);
        canvasContext.moveTo(90, 70);
        canvasContext.lineTo(200, 70);
        canvasContext.stroke();

        canvasContext.draw();
    }
});