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Hi,
I'm trying to create a console-like control and would like to know if that has already been done?
I'll succeed eventually, but I would appreciate discussions about algorithms, performances and otherwise potential gotchas...
More specifically, I'm curious as to how I should design the back-end buffer and the repainting or partially invalidated areas.
Cheers.
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Maxime Labelle
maxime.labelle@freesurf.fr
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Maxime Labelle wrote:
I'm trying to create a console-like control and would like to know if that has already been done?
Not sure, but wouldn't an edit control do what you need? If not, please explain further what a console application is doing for you.
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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Well,
basically, I need to replicate the behaviour of the win32 "ConsoleWindowClass", but without the borders and menu. Just like a console-control child window that I can host in any parent window.
For a good description of the problem, see this google thread
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Maxime Labelle
maxime.labelle@freesurf.fr
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Unfortunately, I do not know of a way of doing that. Seems like it would involve something like CreateWindow("ConsoleWindowClass", ...), but I can't say for sure.
Depending on the specific needs you are after, an edit control can be configured to do some fairly specific things (e.g., maintain a certain size, scroll, use a fixed-spaced font).
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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Right,
That's why I have undertaken the task to actually implement the grunge work in a custom window class of my own.
I already have a barely functional window, which is able to resize in integral multiples of the character width and height, and that implements scrolling in a sensible way.
I'm interested in design tips in how to handle the repainting of partially invalidated areas when scrolling text and that's why my original question was targeted to how I should design the control.
Also, I would somehow need to manipulate regions of texts in order to be able to cut and paste from and to my control, so that's why such design decisions are important.
When I will need to correctly handle the colors or each character, I will probably hit some other gotchas, etc.
Cheers.
--
Maxime Labelle
maxime.labelle@freesurf.fr
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These CP articles may prove useful:/ravi
My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com
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Hi,
Thanks for these articles.
I will need this information in the latter part of my project, but that's not exactly what I need right now, however.
Cheers.
--
Maxime Labelle
maxime.labelle@freesurf.fr
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In an application I am using a CListCtrl, with a lot of text in each cell. Because I cannt see the hole text I want to make a multiline CListCtrl.
How can I do this????
Thanks for the help
Erich
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Changing item height in CListCtrl is not supported by control behaviour. But there is an indirect method of doing so. For this, first of all, set the font of your control to a big size (depending on how many lines per item you need), subclass your control to handle custom draw notification messages, and paint list items yourself. That is the only way according to me.
Gurmeet
BTW, can Google help me search my lost pajamas?
My Articles: HTML Reader C++ Class Library, Numeric Edit Control
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Hi guys
Any one knows hoe to recover deleted files in windows
I don't want any tool. i want code which can do it.
pls help me if any one knows
cheers
Krishnadevan
KD
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krishnadevank wrote:
Any one knows hoe to recover deleted files...
Do you mean a file that is in the Recycle Bin, or a file that is truly deleted?
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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I don't know if that's what the original post was asking, but I'd like to know how it can be done with a truly deleted file
If it's broken, I probably did it
bdiamond
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i don't know either, but what did the old undelete MS program ?
TOXCCT >>> GEII power
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I don't understand what you're saying
If it's broken, I probably did it
bdiamond
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in the old age of MS-DOS, there was a utility program called undelete.exe.
How do you think it was working ?
TOXCCT >>> GEII power
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It was a glorified rename utility. When a file was deleted in DOS, the first letter of the filename was changed to 0xe5. Then the marker in the FAT was flagged as "available."
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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bdiamond wrote:
I don't know if that's what the original post was asking...
Me neither, hence my question.
bdiamond wrote:
but I'd like to know how it can be done with a truly deleted file
I've not written code to undelete files since before Windows was introduced. Given the many file systems that are available today, the way it was done back in the late 80s is no doubt different than how it is done today.
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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Hai friends
I mean that i u delete a file in windows it first goes to recycle bin. if u further delete it it goes.. But i think it does not goes any ware instead it is removed from the file table..
i heared that some utility did it.. Nortan had released a utility for file recovery . did u know it.
i like to do it .. that i ask any knows..
i think now what i earlier said is clear
krishnadk
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you would have to browse the entiere part of the FS on the hard disk to check the deleted file.
you would also have to watch if some sectors were your deleted file was, hadn'd been overwritten by another more recent file.
no more idea... but that's quite a hard task to do !
TOXCCT >>> GEII power
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Can u give me some site address which provide some information related to this ? It is very useful . I found yesterday that it can be done using driver programs.
krishnadk
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to reply to your mail, no, i've got absolutely no idea on the way to proceed to do that, but i'm quite sure it's like this.
google on this...
see you
TOXCCT >>> GEII power
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There are dozens of utilities available that can recover files on FAT16, FAT32, and NTFS file systems. Unfortunately, I know of no source code. That is a realm of Windows that I have not delved into.
"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)
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I have to Find it...
I will publish it in codeproject if i get any idea
Bye friends
krishnadk
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Used to be in the good ole DOS days, Undelete was one option. However, in addition to renaming the first letter back to the original letter, it also did several other things:
First, the directory entry for the file also held the starting cluster number on the HD, as well as the total file size.
Then it calculated the number of clusters needed to contain the file completely (the last partial cluster was upgraded to a whole cluster).
Lastly it went through the FAT, starting with the first cluster, and started linking the required number of clusters into a chain. The odd twist in the whole thing was that the entries were 12-bits wide, so two FAT entries were coded into a three byte field, and had to be decoded accordingly.
This should explain why Undelete worked only part of the time. If you did not run it immediately after deleting a file, chances of recovering the file decreased drastically.
Now, in more modern times, we have several different File Systems, like FAT32 (well, people still use it), NTFS, and maybe HPFS. They all have their own way of tracking the sectors/clusters used by each file. From what I have seen of NTFS, the storage scheme used some sort of an index node mechanism, I was given to understand it may have been a derivative of the Digital's VAX storage architecture. Admittedly, I did not find any documentation on this. No, I did not delve as deeply into this as I did for DOS. In addition, these OSes use temp files that can't be moved physically, and so on. Plus, there are now things such as RAID and so on.
The only reason I can see you would want to muck with such low-level stuff is that you are writing a data recovery program, or you are writing a defragmentation program.
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I would like to allow my MFC program to execute a VB script.
This script would also include command specific to my application.
Can someone point me in the right (probably COM) direction?
Neil
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