Is there an Eclipse line

 

I have a specific project where I need to wrap every code line at 65 characters. I have set up the eclipse Java code formatter properly for this. But what I really want is a vertical line to be drawn in the editor showing where the max line width while I am typing, not just when I run the formmater. I know this feature is available in some capacity because it is displayed in the code formatter property page.

I don't see any option in eclipse to turn this on and I didn't see any plug-ins that do it on Eclipse Plugin Central

Look in Windows / Preferences (at least on Windows - IIRC it moves around for different operating systems) then: 

General -> Editors -> Text Editors -> Show Print Margin

Tick this and it should show the line.

As a quick way of finding this, use the search filter in the top and filter on "margin".

In Eclipse Luna (4.4): Choose menu WindowPreference . Look at top-left corner, in search box type filter text , type: margin .

在这里输入图像描述

In section Apperance color option , Choose Print margin . Choose Show print margin . In text box Print margin column , type 65 as what you want.

@Jon Skeet's answer is incomplete.

(1/2) First, do what he said:

Window --> Preferences --> General --> Editors --> Text Editors --> check the box for Show Print Margin

Ticking this box will show the vertical line.

在这里输入图像描述

As a quick way of finding this, use the search filter in the top and filter on "margin".

However, this only shows the line, but under most situations the "Print margin column" value there is flat-out ignored.

To set the column number for where the line should be , do what @John Percival Hackworth mentions here:

(2/2) Go to:

Window --> Preferences --> C/C++ [or whatever language you are using] --> Code Style --> Formatter --> click Edit --> under the Line Wrapping tab set the value you desire for Maximum line width .

在这里输入图像描述

Side note:

  • Use Alt + Shift + Y to toggle soft line wrapping on and off. It will soft wrap (ie: no carriage return) at the end of the screen, however, not at the column you set above.

    • How do you enforce hard line wrapping at the column you set above (ie: that adds a carriage return)? I don't know yet. If you figure it out let me know. In Sublime Text 3 (a much better editor but with a much worse indexer/function definition finder :() it's Alt + Q.

    Update: I think it may be possible with the "CppStyle" plugin, which uses clang-format , by using Ctrl + Shift + F to apply the auto-format, but I don't know the exact instructions to make it work yet.

    链接地址: http://www.djcxy.com/p/63360.html

    上一篇: Eclipse的轻量级SQL编辑器

    下一篇: 是否有Eclipse线？