AWT 绘画工具不是像素完美的

Question

When using the AWT package to draw stuff I've found that sometimes when I'm using functions such as fillRect or copyArea, it will sometimes add a pixel to the side or bottom, and is getting quite annoying and noticable when painting very small shapes.

How do I fix this?

Update: Here's a picture of what happens when I do g.fillRect(1, 1, 3, 3); , which should produce a 3 by 3 rectangle: picture

It is hard to see but there is a row of pixels added to the right side.

Answer 1

Please read the documentation for fillRect() , and note that the coordinates are treated differently from drawRect() . fillRect() fills in a rectangle that's 1 pixels wider and taller than drawRect() .