To delete all comments from all sheets in a workbook, a macro might be appropriate: Sub DeleteAllComments Dim WS As Worksheet For Each WS In ActiveWorkbook.Worksheets WS.UsedRange.ClearComments Next End Sub and you can associate a shortcut key with the macro via Tools  Macro  Macros  DeleteAllComments  Options.

BEWARE: Deleting all comments does exactly that — it deletes them. As soon as you save the document, those comments are gone, so if you’re hesitant about taking this action, make a copy of the document first and work on the copy. Here’s how to delete all comments at once in Word 2007 and later: Go to the Review tab  Comments group. Delete comment by shortcut. Select the cell which you want to remove its comment, press. Shift + F10 then press. Add or delete comment in Mac system. If you use Mac system, you can do as below. Add or edit comment. Select a cell you want to add or edit its comment, and press. Once you start a comment thread inside a Word document, you can choose to delete, hide, print, or reply to it. Delete a Comment To delete a comment, right-click on the comment and select Delete Comment. Shortcut: Because the D is underlined in word “Delete” in the right-click menu, that means after you right-click the a comment in Word, you can delete it by hitting D on your keyboard. This is a fast way to quickly remove comments after you’ve double checked them. Shortcuts like this are the fastest way to double your productivity.

- Note: You can define your own keyboard shortcuts with the Keyboard Shortcuts plugin
 
Editor
Add Evernote Icon To Desktop
| Function | Shortcut Key | 
|---|
| Undo last action | Ctrl + Z | 
| Redo last action | Ctrl + Shift + Z | 
| Cut selected text | Ctrl + X | 
| Copy selected text | Ctrl + C | 
| Paste text from clipboard | Ctrl + V | 
| Select all text | Ctrl + A | 
| Swap header / source | F11 | 
| Comment highlighted code | Ctrl + Shift + C | 
| Uncomment highlighted code | Ctrl + Shift + X | 
| Duplicate line caret is on | Ctrl + D | 
| Auto-complete / Abbreviations | Ctrl + Space / Ctrl + J | 
| Show call tip | Ctrl + Shift + Space | 
| Swap line caret is on with line above it | Ctrl + T | 
| Toggle bookmark | Ctrl + B | 
| Goto previous bookmark | Alt + PgUp | 
| Goto next bookmark | Alt + PgDown | 
| Toggle current block folding | F12 | 
| Toggle all folds | Shift + F12 | 
This is a list of shortcuts provided by the Code::Blocks' editor component. These shortcuts cannot be rebound.
| Function | Shortcut Key | 
|---|
| Magnify text size. | Ctrl + Keypad '+' | 
| Reduce text size. | Ctrl + Keypad '-' | 
| Restore text size to normal. | Ctrl + Keypad '/' | 
| Cycle through recent files. | Ctrl + Tab | 
| Indent block. | Tab | 
| Dedent block. | Shift + Tab | 
| Delete to start of word. | Ctrl + BackSpace | 
| Delete to end of word. | Ctrl + Delete | 
| Delete to start of line. | Ctrl + Shift + BackSpace | 
| Delete to end of line. | Ctrl + Shift + Delete | 
| Go to start of document. | Ctrl + Home | 
| Extend selection to start of document. | Ctrl + Shift + Home | 
| Go to start of display line. | Alt + Home | 
| Extend selection to start of display line. | Alt + Shift + Home | 
| Go to end of document. | Ctrl + End | 
| Extend selection to end of document. | Ctrl + Shift + End | 
| Go to end of display line. | Alt + End | 
| Extend selection to end of display line. | Alt + Shift + End | 
| Expand or contract a fold point. | Ctrl + Keypad '*' | 
| Create or delete a bookmark. | Ctrl + F2 | 
| Go to next bookmark. | F2 | 
| Select to next bookmark. | Alt + F2 | 
| Find selection. | Ctrl + F3 | 
| Find selection backwards. | Ctrl + Shift + F3 | 
| Scroll up. | Ctrl + Up | 
| Scroll down. | Ctrl + Down | 
| Line cut. | Ctrl + L | 
| Line copy. | Ctrl + Shift + T | 
| Line delete. | Ctrl + Shift + L | 
| Line transpose with previous. | Ctrl + T | 
| Line duplicate. | Ctrl + D | 
| Find matching preprocessor conditional, skipping nested ones. | Ctrl + K | 
| Select to matching preprocessor conditional. | Ctrl + Shift + K | 
| Find matching preprocessor conditional backwards, skipping nested ones. | Ctrl + J | 
| Select to matching preprocessor conditional backwards. | Ctrl + Shift + J | 
| Previous paragraph. Shift extends selection. | Ctrl + [ | 
| Next paragraph. Shift extends selection. | Ctrl + ] | 
| Previous word. Shift extends selection. | Ctrl + Left | 
| Next word. Shift extends selection. | Ctrl + Right | 
| Previous word part. Shift extends selection. | Ctrl + / | 
| Next word part. Shift extends selection. | Ctrl + | 
Files
| Function | Shortcut Key | 
|---|
| New file or project | Ctrl + N | 
| Open existing file or project | Ctrl + O | 
| Save current file | Ctrl + S | 
| Save all files | Ctrl + Shift + S | 
| Close current file | Ctrl + F4 / Ctrl + W | 
| Close all files | Ctrl + Shift + F4 / Ctrl + Shift + W | 
This is a list of shortcuts provided by the Code::Blocks' tab component. These shortcuts cannot be rebound.
| Function | Shortcut Key | 
|---|
| Activate next open file | Ctrl + Tab | 
| Activate previous open file | Ctrl + Shift + Tab | 

View
| Function | Shortcut Key | 
|---|
| Show / hide Messages pane | F2 | 
| Show / hide Management pane | Shift + F2 | 
| Move project up (in Project tree) | Ctrl + Shift + Up | 
| Move project down (in Project tree) | Ctrl + Shift + Down | 
| Activate prior (in Project tree) | Alt + F5 | 
| Activate next (in Project tree) | Alt + F6 | 
| Zoom in / out | Ctrl + Roll Mouse Wheel | 
| Focus editor | CTRL + Alt + E | 
Search
| Function | Shortcut Key | 
|---|
| Find | Ctrl + F | 
| Find next | F3 | 
| Find previous | Shift + F3 | 
| Find in files | Crtl + Shift + F | 
| Replace | Ctrl + R | 
| Replace in files | Ctrl + Shift + R | 
| Goto line | Ctrl + G | 
| Goto next changed line | Ctrl + F3 | 
| Goto previous changed line | Ctrl + Shift + F3 | 
| Goto file | Alt + G | 
| Goto function | Ctrl + Alt + G | 
| Goto previous function | Ctrl + PgUp | 
| Goto next function | Ctrl + PgDn | 
| Goto declaration | Ctrl + Shift + . | 
| Goto implementation | Ctrl + . | 
| Open include file | Ctrl + Alt + . | 
Build
| Function | Shortcut Key | 
|---|
| Build | Ctrl + F9 | 
| Compile current file | Ctrl + Shift + F9 | 
| Run | Ctrl + F10 | 
| Build and Run | F9 | 
| Rebuild | Ctrl + F11 | 

Debug
| Function | Shortcut Key | 
|---|
| Debug | F8 | 
| Continue debugging | Ctrl + F7 | 
| Step over a code block | F7 | 
| Step into a code block | Shift + F7 | 
| Step out of a code block | Ctrl + Shift + F7 | 
| Toggle breakpoint | F5 | 
| Run to cursor | F4 | 
| Previous error | Alt + F1 | 
| Next error | Alt + F2 | 
 Retrieved from 'http://wiki.codeblocks.org/index.php?title=Keyboard_Shortcuts&oldid=5785'