C / C++ / MFC Discussion Boards

sashoalm12-May-10 5:00

12-May-10 5:00

You need to be more clear.

1) A file might be opened in the sense that there are handles of that file opened by one or more processes.
2) I don't know what you mean by "closed", is it that no process has opened the file currently?
3) A file has always been modified somewhere in the past, it might be a minute ago or a month ago or 10 years ago. That's how you create a file, you create it empty and then modify it. Do you mean that you want to get the date of last modification? What do you mean by "it is modified"?

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: Also, you can try CFile::GetStatus (MFC)

Software_Developer12-May-10 1:16

Software_Developer

12-May-10 1:16

Accessing File Status (MFC)

Also, you can try CFile::GetStatus

CFile theFile;
char* szFileName = "X:\\TEXT.TXT";
BOOL bOpenOK;

CFileStatus status;
if( CFile::GetStatus( szFileName, status ) )    bOpenOK = theFile.Open( szFileName,    CFile::modeWrite );
else    bOpenOK = theFile.Open( szFileName,  CFile::modeCreate | CFile::modeWrite );

http://msdn.microsoft.com/en-us/library/e3z63bza(VS.80).aspx[^]

.

Re: Also, you can try CFile::GetStatus (MFC)

suzuuu12-May-10 1:32

suzuuu

12-May-10 1:32

yeah... but i need pure win32 API or any library function.

Re: Also, you can try CFile::GetStatus (MFC)

Software_Developer12-May-10 2:13

Software_Developer

12-May-10 2:13

Sorry about that.

This link below got truckloads of API's to hook your app on for "monitoring"

http://win32-hook.vista-files.org/[^]

Identify the language of an string.

Comp_Users11-May-10 23:19

Comp_Users

11-May-10 23:19

Hi All,

I am developing an SMS application using VC++ 2005 on Vista with Unicode character set.

Is it possible to find the language (i.e, either Chinese, English, french etc etc) of the incomming string?
That is, if I recieve an message in french language, I should be able to recognize the language as French just from the string itself. Are there any API's which will give me that info?

Thanks in advance.

Re: Identify the language of an string.

Maximilien12-May-10 0:44

Maximilien

12-May-10 0:44

Nope, nada, non. (*)

For that you would need an infinite corpus for all/most languages, you'd also have to be able to analyze said language based on no "hint" of a language so you'd need to have an analyser for all languages, and imagine also if a sentence used multiple words for multiple languages ...

I was thinking maybe CString could encode "something" to identify the string, but that you not make sense since there is nothing preventing you to use "latin" characters in a japanenese string and make a french sentence.

(*) probably someone will prove to the contrary, but I don't think so, that's why all online translation ask for in (and out) languages.

Watched code never compiles.

CD DVD burning API

raj157611-May-10 23:14

raj1576

11-May-10 23:14

Hi all

Is there any freeware API for multisession cd and dvd burning in windows xp,vista and windows7

Re: CD DVD burning API

Rajesh R Subramanian12-May-10 2:02

Rajesh R Subramanian

12-May-10 2:02

Hi,

I'm not sure of the internals of it (multisession, writing modes, etc.,), but the following two projects are open source:

CDRDAO[^]
Infra recorder[^] (This one is actually for Linux, but a windows version is done with cygwin)

Workout progress:

Current arm size: 14.4in

Desired arm size: 18in

Next Target: 15.4in by Dec 2010

Current training method: HIT

Re: CD DVD burning API

Ram Shelke11-May-11 21:31

Ram Shelke

11-May-11 21:31

you can follow this link

Burning and Erasing CD/DVD/Blu-ray Media with C# and IMAPI2[^]

Type Library not getting registered on Windows 7 OS

pandit8411-May-10 21:11

pandit84

11-May-10 21:11

Hi I am trying to register a Type Library (.tlb) on Windows 7 operating system.
I am having around 40 Type Libraries. Few type libraries are not getting to register. I have used command prompt for registering them using 'Run as an Administrator' BUT still it fails to registers. I am an 'Administrator' of the machine with UAC(User Account Control) disabled.
Those type libraries who succeeds display
"Registration of MyTypeLib.tlb successful"
But those who fails display
"RegisterTypeLib of MyOtherTypeLib.tlb failed : 8002801c". I have also used process monitoring tool, but not able to find any break through.

Can you please any sun light on this dark night.?

How the CComBSTR know which String to pick .

pandit8411-May-10 20:28

pandit84

11-May-10 20:28

Hi
I am using a CComBSTR object.

CComBSTR bstrText;
     bstrText.LoadString( MyStringID);

How do the object know that it has to pick up the string ID 'MyStringID' from XMLResource as we are not passing any Registry Key info to it.

Thanks in advance.

Re: How the CComBSTR know which String to pick .

Richard MacCutchan11-May-10 22:21

Richard MacCutchan

11-May-10 22:21

The LoadString() function loads a string resource which is encoded into the exe file, not from the registry. See here[^] for details.

It's time for a new signature.

Re: How the CComBSTR know which String to pick .

pandit8412-May-10 0:55

pandit84

12-May-10 0:55

Thanks a lot

CreateFileMapping(...) is failed for Windows 7 Version and Windows Vista

janaswamy uday11-May-10 18:57

janaswamy uday

11-May-10 18:57

Dear All,

I am unable to use the Api ::CreateFileMapping(...) in Windows7 Version and Vista for Elivated User.

Please give me solution for this. I have checked the Error using GetLastError(...) it is giving File AccessPermissions and the Error Code is 5. Please suggest an appropriate solution for this.

Thanks & Regards,
Uday.

Re: CreateFileMapping(...) is failed for Windows 7 Version and Windows Vista

Michel Godfroid11-May-10 23:46

Michel Godfroid

11-May-10 23:46

Did you check the Access permissions? Is the file open in another process? Which file are you trying to map? Is it a real file, or do you use the paging backing store? If so, does the system have a backing store?

Re: CreateFileMapping(...) is failed for Windows 7 Version and Windows Vista

janaswamy uday12-May-10 2:37

janaswamy uday

12-May-10 2:37

Hi,

It is working for Administrative User, But failed in for standard user with Administrative Privilages.
These is observed only on Windows 7 Version and Vista for 2003 and Windows XP working for standard user with administrative previlages.

Please provide me a solution for this.

Thanks,
Uday.

Re: CreateFileMapping(...) is failed for Windows 7 Version and Windows Vista

Michel Godfroid12-May-10 2:49

Michel Godfroid

12-May-10 2:49

That's a different story than what you told us in the original question.
I will assume that it a real file, since you haven't answered any of the questions I asked you Mad | :mad:

Check the file permissions on disk, you will probably discover that it is limited to the administrators group.
You can either change the permissions, or run your program with elevation.

Is there any way to generate ON_WM_SETCURSOR besides mouse movements

ForNow11-May-10 18:02

ForNow

11-May-10 18:02

Hi,

I overriding the CWnd::OnSetCursor in CRicheditctrl which I use to to set my Cursor pos

via SetSel

Is there any other way to drive this notification besides a mouse movement

As it is the only way I have found of postioning my cursor

thankx

Re: Is there any way to generate ON_WM_SETCURSOR besides mouse movements

sashoalm11-May-10 22:44

sashoalm

11-May-10 22:44

What exactly are you trying to do? You can position your cursor by calling SetCursorPos SetCursorPos[^]

There is sufficient light for those who desire to see, and there is sufficient darkness for those of a contrary disposition.
Blaise Pascal

Re: Is there any way to generate ON_WM_SETCURSOR besides mouse movements

ForNow12-May-10 6:15

ForNow

12-May-10 6:15

Didn't think it worked with rich edit

Use of extern "C" in class template

ggoutam711-May-10 16:18

ggoutam7

11-May-10 16:18

Hello,

Below codings gives error when I use extern "C" in my dll project.

extern "C" __declspec(dllexport) void Init(); // Gives error
__declspec(dllexport) void Init(); // Can work

extern "C" __declspec(dllexport) void Init();
    EXTERN_C const IID DIID__IEventFiringObjectEvents;

template <class T>
class CProxy_IEventFiringObjectEvents : public IConnectionPointImpl<T, &DIID__IEventFiringObjectEvents, CComDynamicUnkArray>
{
    extern "C" __declspec(dllexport) void Init()
    {
        T* pT = static_cast<T*>(this);
        // More codings below
    };

};

Using extern "C" gives below error message :
error C2059: syntax error : 'string'

Please guide me on how to include extern "C".

Thanking you in advance,
Goutam

Re: Use of extern "C" in class template

«_Superman_»11-May-10 17:14

«_Superman_»

11-May-10 17:14

You cannot use extern "C" with classes and templates.
What are you trying to do?

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Re: Use of extern "C" in class template

Stephen Hewitt11-May-10 17:32

Stephen Hewitt

11-May-10 17:32

extern "C" is used to make the function callable from C. Clearly a member function isn't callable from C. Your code doesn't make sense as the two concepts are not compatible.

Steve

Re: Use of extern "C" in class template

ggoutam711-May-10 18:24

ggoutam7

11-May-10 18:24

Hello,

Thank you for trying to solve this problem.

I am using samples from "Understanding COM Event Handling" by Lim Bio Liong... URL below :
Understanding COM Event Handling[^]

I am trying to fire event from a ATL dll file, callable from client.
To fire event I need to use class template.
I am using extern "C" before the function name in ATL dll file, to export this function and to make it visible at client.

Below is full code :

__declspec(dllexport) void Init(SMESSAGE* sMessage);
EXTERN_C const IID DIID__IEventFiringObjectEvents;

template <class T>
class CProxy_IEventFiringObjectEvents : public IConnectionPointImpl<T, &DIID__IEventFiringObjectEvents, CComDynamicUnkArray>
{
    //extern "C" __declspec(dllexport) void Init(SMESSAGE* sMessage)
    __declspec(dllexport) void Init(SMESSAGE* sMessage)
    {
        CComVariant varResult;
        VARIANT          var;
        T* pT = static_cast<T*>(this);
        int nConnectionIndex;
        int nConnections = m_vec.GetSize();

        for (nConnectionIndex = 0; nConnectionIndex < nConnections; nConnectionIndex++)
        {
            pT->Lock();
            CComPtr<IUnknown> sp = m_vec.GetAt(nConnectionIndex);
            pT->Unlock();
            IDispatch* pDispatch = reinterpret_cast<IDispatch*>(sp.p);

            if (pDispatch != NULL)
            {
                VariantInit(&var);
                VariantClear(&var);
                V_VT(&var) = VT_RECORD | VT_BYREF;
                V_RECORD(&var) = &sMessage;

                DISPPARAMS disp = { &var, NULL, 5, 0 };
                pDispatch->Invoke(0x4, IID_NULL, LOCALE_USER_DEFAULT, DISPATCH_METHOD, &disp, &varResult, NULL, NULL);
            }
        }
    }

};

Thanking you in advance,
Goutam

Re: Try ifdef __cplusplus

Software_Developer11-May-10 19:01

Software_Developer

11-May-10 19:01

It is true, You cannot use extern "C" with classes and templates.

In the C language, the string-literal "C" is not recognized. It is used in C++ to prevent name decoration.

Remove the string-literal "C" in extern declarations, or use the following in the function declaration:

<pre>#ifdef __cplusplus
   extern "C"
#endif

http://support.microsoft.com/kb/133070[^]

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.