使用Java SWT绘制透明图像 [英] Drawing on a transparent image using Java SWT

问题描述

如何创建内存中完全透明的SWT图像，并在启用了抗锯齿的情况下在其上绘制黑线？

How do I create an in-memory fully transparent SWT image and draw a black line on it with antialias enabled?

我希望结果只包含黑色由于抗锯齿，alpha值范围从0到255 ...

I expect the result to include only black color and alpha values ranging from 0 to 255 due to antialias...

我用Google搜索并尝试了所有可能的东西......这有可能吗？

I googled and tried everything that I could... is this possible at all?

推荐答案

这就是我的工作方式，它起作用：

This is how I did and it works:

    Image src = new Image(null, 16, 16);        
    ImageData imageData = src.getImageData();
    imageData.transparentPixel = imageData.getPixel(0, 0);
    src.dispose();
    Image icon = new Image(null, imageData);
    //draw on the icon with gc

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