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First, I'll assume CMYThread is derived from CWinThread and you know
(new CMYThread)->CreateThread();
won't be a memory leak because the object is self-deleting.
Second, CSocket needs a window when you call Create() so you'd need to use a user interface
thread. An easier method would be to create the socket on the app's UI thread and pass it
into (or make it accessible by) CMyThread.
Mark
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Hello
I am creating a file with a particular name (its a simple txt file). The properties of this file should be such that the user should not be able to rename the file. Is is possible to create a file such that the computer user is not able rename it ??
This is basically because, my application needs some information from this specific file, and it would fail in case the user has changed the file name (because the application would not be able to find that file in its working directory)
Thanx,
Vipin.
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vipin_nvk wrote: Is is possible to create a file such that the computer user is not able rename it
I do not think it is, unless this is a general administration policy, but that would be true for all files.
Anyway, I think you should rethink your design, it seems that your application must be robust enough to handle the fact that the property file does not exist. If the user is dumb enough to move or rename files that comes with your app, he deserves nothing more than an error message.
~RaGE();
I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus
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vipin_nvk wrote: This is basically because, my application needs some information from this specific file, and it would fail in case the user has changed the file name (because the application would not be able to find that file in its working directory)
In general, if a user rename a file used by an application, chances are that the application will fail to start (or use this file). The user is simply not supposed to rename these files or change the contents.
The best you can do is first check if the file exist and then show an error message if not (and take the appropriate action, e.g. exit the program). Then you can also check if the contents of the file are valid.
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Thanx, yes, this is wat the behaviour of my application is currently, but I jst wanted to know, whether there is a way that we can avoid the user from renaming the file.
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vipin_nvk wrote: Is is possible to create a file such that the computer user is not able rename it ??
Yes, but you'll need to do so at the OS level (i.e., it's not enough to simply make the file read-only). See Access Control List (ACL) for more.
"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15
"Judge not by the eye but by the heart." - Native American Proverb
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Hi
What are the differences between kernel,user and gdi objects?and hadles?
I read that
1-)kernel objects are created in system adress space but user are in program adress space but gdi?And also i read that kernel objects are can be shred accross processes but user and gid can not.Are these true?I am not sure.
2-)kernel objects handles are for per-process but user and gdi are system-wide.If thhese are system wides why cant we share accross proccess.Bu also we can share kernel objects?
I think i mixed everthing and confused a lot.
CAn you please tell me concept of object and differences between object types(kernel,user,gdi)
Thanks a lot.
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When a process is cretaed ; windows create a process handle table (right?) and kernel objects store here.
But where do windows store other objects handles.
For example:
I run a process and then win. cretae a process handle table then, program call these functions
CreateThread() returns handleForKernel
CreateBitmap() returns handleForGdi
CeateWindow () returns handleForUser.
Where are these handles?
All of them in process handle table?If not which one process handle table which ones are not?
in system adress space or program adress space?
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Hi:
i m new to Crystal Reporting , and don't know how to use it in VC++ . can any one help me.
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Hello. I'm new to vc++.(So sorry if i ask something simple) I'm trying to make a program that will connect to a machine's modem using the pc's internal modem by telephone.
But i can't find a way to establish the connection. I keep seeing that i should use "at" commands. But i can't find any way to do that.
Can please anyone tell me of a tutorial or some code to do that?
(I have managed to do the job using rs232 connection but i have to also do it with a modem)
Thank you very musch in advance
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In general, you send command strings to the modem, and then reads the answer from the modem.
The commands (all of them) starts with the letters "AT" (without the quotes).
That's the reason why they are called AT commands.
(AFAIK, it started with modems from Hayes, so the command set is also known as Hayes command set".
You can also use Windows Tapi (telephone api) to communicate with modems (and other related gadgets).
Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson
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Communicating with a modem is a real tough job. 
There are some samples here.
The biggest problem is that you have to wait for response.
Greetings from Germany
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Im not sure its your answer or no Is RasDial helpfuls?
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i m planning to convert all my graphical data (stored in database) to a file that can be of my specific file format i like suggestion on how to proceed in right direction
for eg
for a line the x&y coordinate
how could i store it in a file, what is the correct way to do it and what header in have to take into account so that i can retrive it when i read from it
thanks
Regards
pan_angel
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That depends a lot of what you need to save. And there is not really a general rule for that. Except that you need to read everything in the same order as you saved it.
If you are using MFC, you can take a look at serialization, it provides some usefull classes to help you.
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But what kind of file must be wrote so that it can not be accessable by any other software i.e there must be some kind of coding that is to be dne while writing it
if i write data in binary format then it will work or i hav to encode into some other coing that can not be accessable by others
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Technically, every file can be accessible by any program. See that as stream of bytes. But, in order to use them, they will need to know how the file has been saved, meaning that the first 4 bytes is in fact an int holding the number of shapes of your file, then follows X bytes for each shapes (containing the data of the shape).
You can give it any extension you like (but its nice to avoid the most common ones like .doc, .htm, ...).
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The obvious choice is to use a XML file. Then you can have any amount of metadata (such as x and y postions).
The problem is to make sure you can include the (binary) graphical data inte a XML document, without violating the XML rules. You might have to reformat the data to handle that issue.
Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson
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kakan wrote: The obvious choice is to use a XML file.
I'm not sure it is the most obvious choice. It will be quite overkill to use XML format, especially if you have a lot of data to save. And I think in that case a binary file is easier to handle.
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hi all
i need an implementation of an association rule mining algorithm. (no matter which algorithm)
thanks
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pardis wrote: (no matter which algorithm)
Here it is[ ^]
Knock out 't' from can't,
You can if you think you can
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i m using VC++ for desighning an export tool for writing elements in DGN file but a difficulty that i m facing is that i m not able to write the extents of the elements properly i.e low range i m getting in +ve and high range in -ve
i m using "dgnlib" for writing dgn file.
that is why i m not able to fit the view of the dgn when i open it in Microstation
pls reply soon
i'll be highly oblidged
thankx
regards
Pan_angel
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Hi All,
I need to replace char buffer with std::string.
Please find below the code i am using.
AmtInvalidError[50];
long MinimumAmtRequired = (((x*)L_Item)->GetMinAmount()*100);
long MaximumAmtRequired = (((x*)L_Item)->GetMaxAmount()*100);
sprintf(AmtInvalidError, "$%ld.%02d to $%ld.%02d", labs(MinimumAmtRequired/100L),abs((int)(MinimumAmtRequired%100L)), labs(MaximumAmtRequired/100L),abs((int)(MaximumAmtRequired%100L)));
the above code works fine and i get "$25.00 to $100.00" in AmtInvalidError correctly(taking the values for min and max amounts).
Instead of AmtInvalidError array i want to use AmtInvalidError as std::string, and continue populating the string to value "$25.00 to $100.00".
But i am not able to do this becoz, sprintf cannot be used, and hence want to know if there is any other way.
Please kindly help me.
-- modified at 3:55 Thursday 14th December, 2006
Thanks & Regards,
Dhana
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