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Simple Hex Editor

, 27 Jul 2003
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A simple hex editor

Hex Editor

Introduction

One of the most useful tools for programmers is a good Hex editor. So, I decided to throw one together. There is lots of room for more features, such as find functionality, but it is still a good hex editor. It is a good example of how to implement custom document views.

Description

The applications is SDI, with a view based off of CScrollView. The data is loaded into a CString object. I used CString because of its easy memory management (GetBuffer() and Empty() were all I needed). The view class manually draws the text data twice, in ASCII on the left and in hex on the right. Simple highlighting and cursor control is written into the view class, while data manipulation is handled by the data interface. It was really more for my own experience, but I decided that it might be a handy example for fellow programmers on a similar path.

Points of interest

The scrolling may or may not be implemented the way it was intended. I couldn't find very good documentation on how to get it working perfectly, so I set the origins to the top left and simply calculated the visible lines myself. There may be a better way to do that (if there is, tell me), but the end result is that I only draw what I need, making the rendering fast enough to be usable. I also managed to avoid erasing the screen for everything except scrolling.

Known bugs

There are probably quite a few. Meh.

Updates

July 24, 2003 - Fixed the package, fixed drawing to use a memory dc making scrolling smooth, attempted to fix mousewheel scrolling (unable to confirm, no mouse to test with), used window color instead of plain white for background, disabled printing, fixed signed/unsigned warnings.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

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About the Author

PaulFrazee
United States United States
No Biography provided

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Comments and Discussions

 
SuggestionNew feature Pin
WillianBR5-Jan-12 6:06
memberWillianBR5-Jan-12 6:06 
GeneralQuick 'n' dirty way Pin
andwan07-Jun-09 11:45
memberandwan07-Jun-09 11:45 
GeneralImportant Question Pin
Fabian Ganter7-Aug-08 3:12
memberFabian Ganter7-Aug-08 3:12 
GeneralHex Edit 2.5F Pin
Andrew Phillips7-Apr-08 18:22
memberAndrew Phillips7-Apr-08 18:22 
GeneralFree hex editor with MFC source Pin
Andrew Phillips1-Mar-05 12:02
memberAndrew Phillips1-Mar-05 12:02 
GeneralRe: Free hex editor with MFC source Pin
PaulFrazee2-Mar-05 11:25
memberPaulFrazee2-Mar-05 11:25 
GeneralThis is not an editor... it is a viewer! Pin
Spiceworm22-Feb-05 10:55
memberSpiceworm22-Feb-05 10:55 
GeneralRe: This is not an editor... it is a viewer! Pin
PaulFrazee22-Feb-05 17:15
memberPaulFrazee22-Feb-05 17:15 
GeneralShould be more function. Pin
ICE_WIZARD22-Jul-03 6:18
memberICE_WIZARD22-Jul-03 6:18 
GeneralQuick and Dirty fixes Pin
McGarrah21-Jul-03 15:55
memberMcGarrah21-Jul-03 15:55 
GeneralRe: Quick and Dirty fixes Pin
PaulFrazee22-Jul-03 11:15
memberPaulFrazee22-Jul-03 11:15 
GeneralMissing files & bugs Pin
billgatest19-Jul-03 1:27
memberbillgatest19-Jul-03 1:27 
GeneralRe: Missing files & bugs Pin
PaulFrazee19-Jul-03 8:42
memberPaulFrazee19-Jul-03 8:42 
GeneralScrolling doesn't work Pin
Dominik Reichl18-Jul-03 6:01
memberDominik Reichl18-Jul-03 6:01 

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