控制尺寸125％缩放 [英] control size 125% scaling

问题描述

嗨

我只想了解DPI缩放数学如何在引擎盖下工作

I'm just trying to understand how the DPI scaling maths works under the hood

是否有白皮书等等？

如果我说组合框宽度为157像素宽，100％

If I have say a combobox that is 157 pixels wide at 100%

如果我的数学成绩为125％那应该是关于196.25像素

If I do the maths at 125% it should be about 196.25 pixels

如果我以125％的屏幕抓取并在Paint中测量它，它是208像素宽，是原始大小的132％

If I take a screen grab at 125% and measure it in Paint it is 208 pixels wide which is 132% of the original size

我很欣赏一个不能处理部分像素并且可能有一定程度的调整，但这似乎与我预期的大小相当？

I appreciate one can't deal in part pixels and there is probably a degree of adjustment for that but this seems to me to be quite a way from the expected size ?

谢谢

推荐答案

有趣的是，整个测试表格的宽度为214px，100％

Interestingly the whole test Form was 214px wide at 100%

125％NON DPI意识到它是267px，这是现货上的

At 125% NON DPI aware it went to 267px which is spot on

125％DPI AWARE它变为285px，这是133％ 

At 125% DPI AWARE it went to 285px which is 133% 

那么最后一次怎么样？一个正在计算？

So how is the last one being calculated ?

谢谢

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