问题
News wrote that Eclipse 3.5 finally supports column selection. Unfortunately I don\'t know HOW to enable it. I tried pressing the ALT-key like I am used to in Visual Studio and all other Microsoft products but that had no effect.
How can I mark a vertical block in Eclipse?
回答1:
To activate the cursor and select the columns you want to select use:
Windows: Alt+Shift+A
Mac: command + option + A
Linux-based OS: Alt+Shift+A
To deactivate, press the keys again.
This information was taken from DJ's Java Blog.
回答2:
On Windows and Linux, it's AltShiftA, as RichieHindle pointed out. On OSX it's OptionCommandA (⌘⌥A). It's also worth noting that the two modes can have different font preferences, so if you've changed the default text font, it can be jarring to toggle block selection modes and see the font change.
Finally, the "search commands" (Ctrl3 or Command3) pop-up will find it for you if you type block. This is useful if you use the feature just frequently enough to forget the hotkey.
回答3:
As RichieHindle pointed out the shortcut for column (block) selection is Alt+Shift+A. The problem I ran into is that the Android SDK on Eclipse uses 3 shortcuts that all start with Alt+Shift+A, so if you type that, you'll be given a choice of continuing with D, S, or R.
To solve this I redefined the column selection as Alt+Shift+A,A (Alt, Shift, A pressed together and then followed by a subsequent A). To do this go to Windows > Preferences then type keys or navigate to General > Keys. Under the Keys enter the filter text of block selection to quickly find the shortcut listing for toggle block selection. Here you can adjust the shortcut for column selection as you wish.
回答4:
First of all your mouse key must be focus in editor to enable Toggle Block Selection Mode
Click on toggleButton as shown in figure and it will enable Vertical selection. After selection toggle it again.
回答5:
Additionally, you can change the keys view window -> preferences then type: 'keys' and when the key preference page opens you can type 'toggle block selection' and voila!
回答6:
You can enable and disable column editing mode via the keyboard shortcut ALT-SHIFT-A.
Once enabled you can then use either the mouse to select a block of text, or the keyboard using SHIFT (like a normal keyboard select, except the selection will now be in a block).
If you've changed your default font for text editing, entering column editing mode will probably change your screen font to the default column editing font (which is probably different to your changed font. To change the font when in column editing mode, go to the menu and select Window -> Preferences, then in the tree on the left hand side, pick General -> Appearance -> Colors and Fonts, and then pick Basic -> Text Editor Block Selection Font on the right hand side tree. You can then select the font to be consistent with your "not in column editing mode" font.
回答7:
A different approach:
The vrapper plugin emulates vim inside the Eclipse editor. One of its features is visual block mode which works fine inside Eclipse.
It is by default mapped to Ctrl-V which interferes with the paste command in Eclipse. You can either remap the visual block mode to a different shortcut, or remap the paste command to a different key. I chose the latter: remapped the paste command to Ctrl-Shift-V to match my terminal's behavior.
来源：https://stackoverflow.com/questions/1053725/how-do-i-enable-the-column-selection-mode-in-eclipse