Urgent : How to read a unicode file in C/C++ - C / C++ / MFC Discussion Boards

Re: sdi

Weiye Chen2-Jul-06 22:02

Weiye Chen

2-Jul-06 22:02

Create your sdi application with a form view

Re: sdi

ashish dogra2-Jul-06 22:19

ashish dogra

2-Jul-06 22:19

yes sir i create it with form view but then i create a second form whose base class is CMDIChildWnd wher split window is created .
now i want to go from first forms menu to second form .

Ashish Dogra
MCA
Noida

Re: sdi

Weiye Chen2-Jul-06 23:55

Weiye Chen

2-Jul-06 23:55

Your second form should also be derived from CFormView. Use SetActiveView() of your mainframe window to switch between your forms.

Re: sdi

Hamid_RT2-Jul-06 22:22

Hamid_RT

2-Jul-06 22:22

Do you need to call one dialog

whitesky

Re: sdi

ashish dogra2-Jul-06 22:36

ashish dogra

2-Jul-06 22:36

sir i need to call a form
on which split window is shown

Ashish Dogra
MCA
Noida

Re: sdi

Hamid_RT2-Jul-06 23:05

Hamid_RT

2-Jul-06 23:05

Hope I understood your question
if you want to call dialog you can use from a variable from your dialog and use m_dialog.Create(ID_DIALOG) in your program and use m_dialog.Show(1);

whitesky

Re: sdi

ashish dogra2-Jul-06 22:54

ashish dogra

2-Jul-06 22:54

hi sir plz solve my problem

Ashish Dogra
MCA
Noida

Urgent : How to read a unicode file in C/C++

Rocky Marrone2-Jul-06 21:51

Rocky Marrone

2-Jul-06 21:51

Hi guys this is rocky.
I got stuck in a problem plz help me.

I want to read a text file which is having unciode charachters in C/C++.

i m using normaal fopen function but can't get the result fine..

here is the small peace of codeee

if ((fp = fopen("d:/GRCasual.txt", CFile::modeRead|CFile::typeBinary)) == NULL)
{
return 0;
}

while(!feof(fp))
{
/*fseek(fp,sizeof(char),SEEK_CUR); */
retbuf = fgets(buf, 200, fp);
}

thnx in advance guys ............
i m waitin for ur replies..........

Best Regards
Rocky

Re: Urgent : How to read a unicode file in C/C++

Don Box2-Jul-06 21:55

Don Box

2-Jul-06 21:55

Declare the "buf" parameter in fgets(buf, 200, fp) as wchar_t type.

Jubin Chawda
braindrain1@rediffmail.com
-----------------------------
Come online at:-
fitiyal@yahoo.com

Re: Urgent : How to read a unicode file in C/C++

Rocky Marrone2-Jul-06 22:05

Rocky Marrone

2-Jul-06 22:05

i m gettin an exception that

error C2664: 'fgets' : cannot convert parameter 1 from 'wchar_t *' to 'char *'

what abt this

thnx in advance

Best Regards
Rocky

Re: Urgent : How to read a unicode file in C/C++

Viorel.2-Jul-06 22:15

Viorel.

2-Jul-06 22:15

Try fgetws instead of fgets.

(However it is unlikely that your second parameter of fopen will work).

Re: Urgent : How to read a unicode file in C/C++

Rocky Marrone2-Jul-06 22:19

Rocky Marrone

2-Jul-06 22:19

Thnx for the reply first

thnx for giving me some time

here is the peice of code i m not getting the result

FILE* fp = NULL;
wchar_t* buf = (wchar_t*)malloc(sizeof(wchar_t) * 200);
wchar_t* retbuf = NULL;

if ((fp = fopen("d:/GRCasual.txt", "r")) == NULL) // opens the file
{
return 0;
}

while(!feof(fp))
{
/*fseek(fp,sizeof(char),SEEK_CUR); */
retbuf = fgetws(buf, 200, fp);
}

if( fp )
fclose(fp);
return 0;

Re: Urgent : How to read a unicode file in C/C++

Viorel.2-Jul-06 22:24

Viorel.

2-Jul-06 22:24

Instead of

if ((fp = fopen("d:/GRCasual.txt", "r")) == NULL)

try this:

if ((fp = fopen("d:\\GRCasual.txt", "rb")) == NULL)

I hope it helps.

Re: Urgent : How to read a unicode file in C/C++

Hamid_RT2-Jul-06 22:21

Hamid_RT

2-Jul-06 22:21

See OLE2A USES_CONVERSION;

whitesky

Re: Urgent : How to read a unicode file in C/C++

Rocky Marrone2-Jul-06 22:26

Rocky Marrone

2-Jul-06 22:26

Sorry Guys but can't get the result with this also OLE2A USES_CONVERSION

plz help

thnx in advance

Rocky

Re: Urgent : How to read a unicode file in C/C++

Hamid_RT2-Jul-06 22:32

Hamid_RT

2-Jul-06 22:32

you said "cannot convert parameter 1 from 'wchar_t *' to 'char *" whats error? and i said use OLE2A

whitesky

Re: Urgent : How to read a unicode file in C/C++

Rocky Marrone2-Jul-06 22:49

Rocky Marrone

2-Jul-06 22:49

Guys this is the code but cant read the unicode file...........
if there is any problem in it tell me i will solve it..........

FILE* fp = NULL;
wchar_t* buf = (wchar_t*)malloc(sizeof(wchar_t) * 200);
wchar_t* retbuf = NULL;

if ((fp = fopen("d:/GRCasual.txt", "r")) == NULL) // opens the file
{
return 0;
}

while(!feof(fp))
{
/*fseek(fp,sizeof(char),SEEK_CUR); */
retbuf = fgetws(buf, 200, fp);
}

if( fp )
fclose(fp);
return 0;

thnx in advance
regards
Rakesh

About Cd-rom?

Syouki_kou2-Jul-06 21:33

Syouki_kou

2-Jul-06 21:33

How could i judge the Cd-rom door's status?(open or closed). Pay attention to that here is Cd-rom not DVD-rom, I used the SCSI command "Mechanism Status" to get the dvd-rom door's status successfully, but it can't work on Cd-rom, so what should i do to fix this trouble? Smile | :)

Go go go, roger that. Enemy sighted!

Re: About Cd-rom?

Don Box2-Jul-06 21:52

Don Box

2-Jul-06 21:52

U look into DeviceIoControl() with IOCTL_STORAGE_EJECT_MEDIA as a second parameter.

Jubin Chawda
braindrain1@rediffmail.com
-----------------------------
Come online at:-
fitiyal@yahoo.com

Re: About Cd-rom?

Hamid_RT2-Jul-06 22:39

Hamid_RT

2-Jul-06 22:39

See CD Change Notifications[^] maybe it is some helpful to you

whitesky

Re: About Cd-rom?

Syouki_kou3-Jul-06 16:44

Syouki_kou

3-Jul-06 16:44

Thanks you all for your helpful infos, but all seems not work fine.
Is there a command of SCSI just as same as "mechanism status" command which can work on DVD-ROM?
Or some other helpful infos? Sniff | :^)

Re: About Cd-rom?

Hamid_RT3-Jul-06 18:34

Hamid_RT

3-Jul-06 18:34

And thisOpen or Close CD-ROM drive[^]

whitesky

Re: About Cd-rom?

Syouki_kou3-Jul-06 20:38

Syouki_kou

3-Jul-06 20:38

Thanks for your help, whitesky!
But I wonder if you really understand what I want to realize!
I just want to know the status of CD-ROM, it is opened or closed?
The MCI command can't work at all, I tried it before, and WM_DEVICECHANGE message also can't work. And I tried MMC command(APSI programming),but it can only work on DVD-ROM, do not work on CD-ROM! That's my trouble.

My original purpose is that if you right click the CD/DVD-ROM icon, the eject menuitem can take a little change for it can change to "Insert" if the door is already opened, and back to "eject" if the door is closed. For this, I must know the status of the door, it is closed or open?

One day a pretty girl asked me: "Do you think you are handsome?"."I don't think so!" She gave a slap in my face:"Why lying?"

strange linking error with operator overloading

George_George2-Jul-06 21:27

George_George

2-Jul-06 21:27

Hello everyone,

I am meeting with a strange linking error regarding to operator overloading. I am creating a C++ static lib, and then linking it with a C application. Here is the error message and source codes,

I am using adapter.cpp, adapter.h, foo.cpp and foo.h to create a static lib called foo.lib, then link it with a C application (goo.c). There is no problem to generate the static lib foo.lib.

Any comments to solve this link error?

<br />
error LNK2019: unresolved external symbol "private: class FooNameSpace::Foo __thiscall FooNameSpace::Foo::operator=(long)" (??4Foo@FooNameSpace@@AAE?AV01@J@Z) referenced in function "private: __thiscall FooNameSpace::Foo::Foo(<br />
long)" (??0Foo@FooNameSpace@@AAE@J@Z)<br />
<br />
fatal error LNK1120: 1 unresolved externals<br />

adapter.cpp

<br />
#include "adapter.h"<br />
#include "foo.h"<br />
<br />
using namespace FooNameSpace;<br />
<br />
void compute(void)<br />
{<br />
	Goo g;<br />
	g.computeFoo();<br />
}<br />

adapter.h

<br />
#ifdef __cplusplus<br />
extern "C" {<br />
#endif<br />
<br />
void compute (void);<br />
<br />
#ifdef __cplusplus<br />
}<br />
#endif<br />

foo.cpp

<br />
#include "foo.h"<br />
<br />
using namespace FooNameSpace;<br />
<br />
Foo Foo::operator=(long value)<br />
{<br />
  this -> value = value;<br />
  return (*this);<br />
}<br />

foo.h

<br />
namespace FooNameSpace<br />
{<br />
	class Foo<br />
	{<br />
<br />
	private:<br />
		long value;<br />
  <br />
		 Foo (long value) { (*this) = value; }<br />
		 inline Foo operator= (long value);<br />
		 friend class Goo;<br />
  };<br />
<br />
	class Goo<br />
	{<br />
	public:<br />
		void computeFoo()<br />
		{<br />
			Foo foo = Foo(0L);<br />
		}<br />
  };<br />
}<br />

goo.c (link with foo.lib)

<br />
#include "adapter.h"<br />
#include "windows.h"<br />
<br />
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,<br />
                    LPWSTR lpCmdLine, int nCmdShow)<br />
{<br />
	compute();<br />
	return 0;<br />
}<br />

thanks in advance,
George

Re: strange linking error with operator overloading

Viorel.2-Jul-06 21:40

Viorel.

2-Jul-06 21:40

I think no error will be generated if you:

remove the inline keyword from the declaration of Foo::operator =;
or, move the implementation of Foo::operator = from foo.cpp to foo.h file;
or, place the implementation of Foo::operator = function inside the Foo class.

I hope it helps.

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