C / C++ / MFC

Re: How can read a unicode text file as character by character?

20-Mar-11 23:18

Use fgetc()/fgetwc()[^] or wcin[^]. It's exactly the same process as reading non-Unicode.

I must get a clever new signature for 2011.

Le@rner21-Mar-11 0:51

Le@rner

21-Mar-11 0:51

i m using this now but its not successful.

FILE *stream;
	   char buffer[2];
	   int  kk, ch;

	   // Open file to read line from:
	   fopen_s( &stream, OpenFile, "r" );
	   if( stream == NULL )
	   {
		   return ;
		  //exit( 0 );
	   }

	   // Read in first 80 characters and place them in "buffer": 
	   ch = fgetc( stream );
	   for( kk=0; (kk < 1 ) && ( feof( stream ) == 0 ); kk++ )
	   {
		  buffer[kk] = (char)ch;
		  ch = fgetc( stream );
	   }

	   // Add null to end string 
	   buffer[kk] = '\0';
	   printf( "%s\n", buffer );
	   fclose( stream );

here its unable to open the file and stream is alwaz null thats why its return.

Re: How can read a unicode text file as character by character?

Richard MacCutchan21-Mar-11 2:33

Re: How can read a unicode text file as character by character?

21-Mar-11 2:33

You are ignoring the return code from fopen_s so it's impossible to diagnose your problem. Use something like the following and look up the error code that you receive.

errno_t errNum = fopen_s( &stream, OpenFile, "r" );
if (errNum != 0)
{
    // add some code here to display the error value
    // or set a breakpoint and inspect its contents
}

I would suggest you look at the documentation here[^] for further guidance.

Incidentally, the rest of your code does not seem to be set up to process Unicode data, which was the subject of your original question.

I must get a clever new signature for 2011.

malaugh1-Apr-11 5:03

malaugh

1-Apr-11 5:03

If you have the program set to unicode, you need to use _wfopen_s to open the file, and the filename (OpenFile) needs to be specified as wchar_t something like

wchar_t Myfile[] = "my_file.ext";

Then you should be able to use fgetwc to get the characters using ch = fgetwc( stream ); your should specify ch as wchar_t

See if dll exist

marca29220-Mar-11 22:04

20-Mar-11 22:04

Hi,

How can I check if a dll exist in c++ before I try to load it with dllHandle = LoadLibraryW(m_sFileName)? Sometimes it looks like that the LoadLibraryW call hangs the calling thread if the dll doesn't exist on the disc.

Regards
Olof

వేంకటనారాయణ(venkatmakam)20-Mar-11 22:32

వేంకటనారాయణ(venkatmakam)

20-Mar-11 22:32

I think you can use the API PathFileExists() to check wheather a file exist or not in disk.
http://msdn.microsoft.com/en-us/library/bb773584%28v=vs.85%29.aspx[^]
But according msdn loadlibrary function will return with fail if it wont find the file specified dll.

marca29221-Mar-11 0:48

21-Mar-11 0:48

Thanks, I will try this.

CPallini20-Mar-11 22:35

CPallini

20-Mar-11 22:35

If you a priori know where the DLL should be then your strategy might be good. On the other hand if you need to follow the same procedure the OS does for searching the DLL then you'll meet the same hanging conditions, I suppose.
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Richard MacCutchan20-Mar-11 23:15

20-Mar-11 23:15

It's probably more important to investigate why the program hangs. LoadLibrary() should merely search through all paths in the PATH variable to find the named DLL. If it hangs during that process then there is something wrong with your system.

I must get a clever new signature for 2011.

marca29221-Mar-11 0:52

21-Mar-11 0:52

Hi, the problem occurs when the user do sleep/resume test with the computer. We try to load the dll with LoadLibrary and a few milliseconds after the LoadLibrary call the user puts the system into sleep. Maybe thats why I got the problem?

Richard MacCutchan21-Mar-11 2:35

21-Mar-11 2:35

This is a joke, right? You really expect your program to continue running when the OS enters sleep mode?

I must get a clever new signature for 2011.

marca29221-Mar-11 4:49

21-Mar-11 4:49

Of cours not, are you stupid or??? It very difficult to know when the user puts the system into sleep. And I don't see the meaning of your comment, you have no idea how big our application is and how it work.

The application stops working ~1/100 sleep resume tests.

Thanks for your answer!

Richard MacCutchan21-Mar-11 5:47

Re: hide the file or folder

21-Mar-11 5:47

marca292 wrote:
are you stupid or?

No, how about you?

marca292 wrote:
ou have no idea how big our application is and how it work.

I did not say I did?

marca292 wrote:
The application stops working ~1/100 sleep resume tests.

I have no idea what this is supposed to mean.

I must get a clever new signature for 2011.

hide the file or folder

sarfaraznawaz20-Mar-11 21:23

sarfaraznawaz

20-Mar-11 21:23

i am trying to hide the file or folder in win32 is any a=way to hide the it any API or any idea ...

thanking you all...

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20-Mar-11 21:36

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Re: hide the file or folder

Richard MacCutchan20-Mar-11 23:13