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.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

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

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

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...

Vera99920-Mar-11 21:36

Vera999

20-Mar-11 21:36

We know your information from your website and learn about your company are selling Jcop OS card or Java chip card.

We are OPRFID Technologies. Our company produce RFID products, include lots of Jcop OS and Java card products.

If you interested in our Jcop OS/Java card, plesase kindly check our website:

http://www.oprfid.com/java-card%20and%20jcop-card.html.

Hope we can cooperate with your company at Jacop OS/Java card !

If you have any question ,pls feel free to contact us.

Best Regards

Vera.

OPRFID Technologies., LTD
2-603 Room, Hong Feng Jia Yuan , 270# BeiMo Street ChengXiang Putian City Fujian, P.R, China.
Tel: (0086)594 2790031
Fax: (0086)594 2790185
Email: oprfid.sales@oprfid.com

Richard MacCutchan20-Mar-11 23:13

20-Mar-11 23:13

Try the SetFileAttributes()[^] function.

I must get a clever new signature for 2011.

sarfaraznawaz23-Mar-11 23:18

23-Mar-11 23:18

i use SetFileAttributes() but its showing in blinking form i am trying to totally invisible the folder

Richard MacCutchan24-Mar-11 0:49

24-Mar-11 0:49

sarfaraznawaz wrote:
use SetFileAttributes() but its showing in blinking form

Sorry, I don't understand what you mean by "blinking form".

I must get a clever new signature for 2011.

sarfaraznawaz24-Mar-11 2:44

24-Mar-11 2:44

its shows like system file trying to hide totally

sarfaraznawaz24-Mar-11 2:59

24-Mar-11 2:59

actually i am tyring to to similar as when we click the check box of don't show the hidden file

Richard MacCutchan24-Mar-11 5:43

24-Mar-11 5:43

So where are you trying to show or hide it? In your own program, in a third party program, in Windows Explorer? Your questions (and answers) are not very clear.

I must get a clever new signature for 2011.

sarfaraznawaz24-Mar-11 18:31

24-Mar-11 18:31

sorry...........
trying to hide the folder existing folder in my own program

Richard MacCutchan24-Mar-11 23:54

24-Mar-11 23:54

sarfaraznawaz wrote:
trying to hide the folder existing folder in my own program

Yet another meaningless comment. If you have a problem in your code then try posting a snippet of the code, explain what you expect it to do and what results you see. Vague statements like the above tell us nothing.

I must get a clever new signature for 2011.

sarfaraznawaz25-Mar-11 0:55

25-Mar-11 0:55

if(!SetFileAttributes(_T("C:\\Documents and Settings\\Sarfaraz\\Desktop\\hiddenhiddenhiddenhiddenhiddenhidden"), FILE_ATTRIBUTE_HIDDEN))
{
MessageBox(_T("Fail to find the folder "),_T(" "),MB_OK | MB_ICONERROR);
return -1;
}

the FILE_ATTRIBUTE_HIDDEN only hide but still we see it i want make the folder invisible from the user is there any way to do it.

thanking you ...

Richard MacCutchan25-Mar-11 1:05