C / C++ / MFC

12-Feb-07 18:50

Hello all,

I have a win 32 API interface & a dll fie and I have connected my Dll with my interface its working properly.

In the Dll file I have a one program which lists all the files in the specified drive , now I want to access those file names and I want to add those files names in the list box in the interface.

Can anyone please tell me how to do this ??? I want to add each and every file name listed by the function in the dll and add those file names in the interface list box.

Please give me some idea how can I can proceed with my work.

Thanking you,
Suresh HC.

prasad_som12-Feb-07 18:59

12-Feb-07 18:59

Can you show some code, that you are trying ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Suresh H12-Feb-07 19:22

12-Feb-07 19:22

Hi Prasad,

Thank you very much for the response.

I have this ListFiles Function in my Dll File , and I checked in the Console interface its lists all the files , now I want to add each and every file names to win 32 Api interface in the list box.

<br />
Listfiles function in the Dll file.<br />
<br />
STDMETHODIMP_ (void)<br />
CMyA::XMyAObj::ListFiles (char *dir) <br />
{<br />
	-----<br />
	----------<br />
	----------------<br />
			<br />
	_chdir(dir);<br />
	if( (File_handle = _findfirst( "*", &file_s )) == -1L ) {<br />
       printf( "No files in current directory!\n" );<br />
	}<br />
	else if (file_s.attrib & _A_NORMAL){<br />
		sprintf (name, "%s",dir);<br />
		fnum++;<br />
		insert (fnum, dir);<br />
	}	<br />
	else {<br />
		do {<br />
			if (strcmp (file_s.name, ".") == 0 || strcmp (file_s.name, "..") == 0)<br />
				continue;<br />
			if (strlen (dir) + strlen (file_s.name) + 2 > sizeof (name)) {<br />
				fprintf (stderr, "Dir name too long\n");<br />
				return;<br />
			}<br />
			<br />
			if (file_s.attrib & _A_SUBDIR) {<br />
				sprintf (name, "%s/%s",dir, file_s.name);<br />
				ListFiles(name);<br />
			}<br />
<br />
-----<br />
		----------<br />
		----------------<br />
<br />

In interface I am passing the directory name like this

pA->ListFiles(itemText);

now I want to know how to extract all the file names and add it to list box in the interface. ???

prasad_som12-Feb-07 19:30

Re: Working with Dll [modified]

12-Feb-07 19:30

Use LB_ADDSTRING message for list box.

char *pFileName = "SomeThing";
SendMessage(hLBox,LB_ADDSTRING,0,pFileName);

Prasad
Notifier using ATL | Operator new[],delete[][^]

Suresh H12-Feb-07 19:33

12-Feb-07 19:33

Can I directly access the Interface List box from the Dll ??? is that so simple ???

prasad_som12-Feb-07 19:42

12-Feb-07 19:42

What do you mean by interface ? Are you using a UI COM component, havinig list box in it, and you want to add file names to it ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Suresh H12-Feb-07 19:53

12-Feb-07 19:53

Prasad I have two files now one Win32 api interface (.exe) where I have the list box.
2nd one is I have dll file with List file function.

I am passing the parameter to dll from exe by below code

<br />
<br />
IClassFactory *pclsf;<br />
IUnknown *pUnk;<br />
IMyA *pA;<br />
	<br />
//Initialize the OLE liberaries<br />
CoInitialize(NULL);<br />
	<br />
	//get the IClassFactory interface pointer<br />
HRESULT hr = CoGetClassObject(<br />
							MYA_CLSID,<br />
							CLSCTX_INPROC,<br />
							NULL,<br />
							IID_IClassFactory,<br />
							(void **) &pclsf);<br />
<br />
<br />
  pA->ListFiles("Dir name");<br />

now I am actually passing the values to dll which does the process.
After that process its list some file names which I have to add in my interface. Since the List box is in Interface(exe), I want to know how to access List box from the dll ???

Can I directly give this code

<br />
char *pFileName = "SomeThing";<br />
SendMessage(hLBox,LB_ADDSTRING,0,pFileName);

in the DLL will this work ???? but how to get handle of the list box and all ??? can u please tell me.

prasad_som12-Feb-07 21:15

12-Feb-07 21:15

Suresh H wrote:
Since the List box is in Interface(exe), I want to know how to access List box from the dll ???

Your interface should have some method to do this. Because, it will have access to window handle.
Or, interface should expose listbox's handle as property, where as you can use it from your code.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Suresh H12-Feb-07 22:06

12-Feb-07 22:06

Hi Prasad,

I am very much new to this .. can u please give an example how to do this.
How to pass and access list box from dll.

prasad_som12-Feb-07 22:17

12-Feb-07 22:17

I think you need understanding of COM for this . Who does develop interface in question ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Suresh H12-Feb-07 22:30

12-Feb-07 22:30

Prasad I have basic idea of working with COM, like creating dll , Interface , connecting each other etc ….

Can u please give me some links where I can get some material on this.

Thanking you,
Suresh HC.

prasad_som12-Feb-07 22:35

12-Feb-07 22:35

To start with, go through Interface[^] basics.
Browse articles in same section for more info.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Suresh H12-Feb-07 22:45

Anybody with hyperthreading

12-Feb-07 22:45

Thanks Prasad, i will start with that article.

Waldermort12-Feb-07 13:37

12-Feb-07 13:37

If you have a hyperthreading enabled CPU, please do me a favour. Navigate to
HKEY_LOCAL_MACHINE, "Hardware\\Description\\System\\CentralProcessor"
and tell me if your virtual CPU's are listed. IE if you have 1 pentium 4 with hyperthreading, it should show the subdirectories 0 and 1. ( I think Confused | :confused:

)

Mark Salsbery12-Feb-07 13:59

Mark Salsbery

12-Feb-07 13:59

With dual Xeons I get 4 virtual cpus, Reg keys 0 - 3.

Waldermort12-Feb-07 14:15

12-Feb-07 14:15

Cheers. I would enumerate the values, but vista keeps giving me ERROR_ACCESS_DENIED, so I will hardcode them.

Naveen12-Feb-07 16:31

Naveen

12-Feb-07 16:31

WalderMort wrote:
it should show the subdirectories 0 and 1.

Ya. It shows...

nave

kakan12-Feb-07 19:21

kakan

12-Feb-07 19:21

Yep, I've got 0 and 1
And one single value that differs: Component Information.
Cpu 0: 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
Cpu 1: 00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

MSDN examples

Waldermort12-Feb-07 12:16

12-Feb-07 12:16

Dont' you just hate it when the examples on MSDN are WRONG! Mad | :mad:

Look at this[^] for example. According to their code I'm running a Longhorn server. I wish. Even their reg queries are wrong since they mix and match the cases.

Re: MSDN examples

Mark Salsbery12-Feb-07 12:49

Mark Salsbery

12-Feb-07 12:49

I've never actually tried that code verbatim, but that article changes with every version
of Windows. I've always updated my code with every version release but by going through each
API carefully in the latest SDK.

The latest (PSDK 2003 Server R2) Requires #define _WIN32_WINNT 0x0501 to compile and the
latest SDK headers (plus it won't compile on Unicode build LOL)...

#include <windows.h>
#include <stdio.h>

#define BUFSIZE 80

int main()
{
   OSVERSIONINFOEX osvi;
   SYSTEM_INFO si;
   BOOL bOsVersionInfoEx;

   // Try calling GetVersionEx using the OSVERSIONINFOEX structure.
   // If that fails, try using the OSVERSIONINFO structure.

   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);

   if( !(bOsVersionInfoEx = GetVersionEx ((OSVERSIONINFO *) &osvi)) )
   {
      osvi.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
      if (! GetVersionEx ( (OSVERSIONINFO *) &osvi) ) 
         return FALSE;
   }


   switch (osvi.dwPlatformId)
   {
      // Test for the Windows NT product family.

      case VER_PLATFORM_WIN32_NT:

      // Test for the specific product.

      if ( osvi.dwMajorVersion == 6 && osvi.dwMinorVersion == 0 )
      {
         if( osvi.wProductType == VER_NT_WORKSTATION )
             printf ("Microsoft Windows Vista ");
         else printf ("Windows Server \"Longhorn\" " );
      }

      if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 2 )
      {
         GetNativeSystemInfo(&si);

         if( GetSystemMetrics(SM_SERVERR2) )
            printf( "Microsoft Windows Server 2003 \"R2\" ");
         else if( si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_IA64 &&
                  osvi.wProductType == VER_NT_WORKSTATION )
         {
            printf( "Microsoft Windows XP Professional x64 Edition ");
         }
         else printf ("Microsoft Windows Server 2003, ");
      }

      if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1 )
         printf ("Microsoft Windows XP ");

      if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0 )
         printf ("Microsoft Windows 2000 ");

      if ( osvi.dwMajorVersion <= 4 )
         printf ("Microsoft Windows NT ");

      // Test for specific product on Windows NT 4.0 SP6 and later.
      if( bOsVersionInfoEx )
      {
         // Test for the workstation type.
         if ( osvi.wProductType == VER_NT_WORKSTATION )
         {
            if( osvi.dwMajorVersion == 4 )
               printf ( "Workstation 4.0 " );
            else if( osvi.wSuiteMask & VER_SUITE_PERSONAL )
               printf ( "Home Edition " );
            else printf ( "Professional " );
         }
            
         // Test for the server type.
         else if ( osvi.wProductType == VER_NT_SERVER || 
                   osvi.wProductType == VER_NT_DOMAIN_CONTROLLER )
         {
            if(osvi.dwMajorVersion==5 && osvi.dwMinorVersion==2)
            {
               if ( si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_IA64 )
               {
                   if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
                      printf ( "Datacenter Edition for Itanium-based Systems" );
                   else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
                      printf ( "Enterprise Edition for Itanium-based Systems" );
               }

               else if ( si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64 )
               {
                   if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
                      printf ( "Datacenter x64 Edition " );
                   else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
                      printf ( "Enterprise x64 Edition " );
                   else printf( "Standard x64 Edition " );
               }

               else
               {
                   if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
                      printf ( "Datacenter Edition " );
                   else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
                      printf ( "Enterprise Edition " );
                   else if ( osvi.wSuiteMask == VER_SUITE_BLADE )
                      printf ( "Web Edition " );
                   else printf ( "Standard Edition " );
               }
            }
            else if(osvi.dwMajorVersion==5 && osvi.dwMinorVersion==0)
            {
               if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
                  printf ( "Datacenter Server " );
               else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
                  printf ( "Advanced Server " );
               else printf ( "Server " );
            }
            else  // Windows NT 4.0 
            {
               if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
                  printf ("Server 4.0, Enterprise Edition " );
               else printf ( "Server 4.0 " );
            }
         }
      }
      // Test for specific product on Windows NT 4.0 SP5 and earlier
      else  
      {
         HKEY hKey;
         char szProductType[BUFSIZE];
         DWORD dwBufLen=BUFSIZE;
         LONG lRet;

         lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
            "SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
            0, KEY_QUERY_VALUE, &hKey );
         if( lRet != ERROR_SUCCESS )
            return FALSE;

         lRet = RegQueryValueEx( hKey, "ProductType", NULL, NULL,
            (LPBYTE) szProductType, &dwBufLen);
         RegCloseKey( hKey );

         if( (lRet != ERROR_SUCCESS) || (dwBufLen > BUFSIZE) )
            return FALSE;

         if ( lstrcmpi( "WINNT", szProductType) == 0 )
            printf( "Workstation " );
         if ( lstrcmpi( "LANMANNT", szProductType) == 0 )
            printf( "Server " );
         if ( lstrcmpi( "SERVERNT", szProductType) == 0 )
            printf( "Advanced Server " );
         printf( "%d.%d ", osvi.dwMajorVersion, osvi.dwMinorVersion );
      }

      // Display service pack (if any) and build number.

      if( osvi.dwMajorVersion == 4 && 
          lstrcmpi( osvi.szCSDVersion, "Service Pack 6" ) == 0 )
      { 
         HKEY hKey;
         LONG lRet;

         // Test for SP6 versus SP6a.
         lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
  "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Hotfix\\Q246009",
            0, KEY_QUERY_VALUE, &hKey );
         if( lRet == ERROR_SUCCESS )
            printf( "Service Pack 6a (Build %d)\n", 
            osvi.dwBuildNumber & 0xFFFF );         
         else // Windows NT 4.0 prior to SP6a
         {
            printf( "%s (Build %d)\n",
               osvi.szCSDVersion,
               osvi.dwBuildNumber & 0xFFFF);
         }

         RegCloseKey( hKey );
      }
      else // not Windows NT 4.0 
      {
         printf( "%s (Build %d)\n",
            osvi.szCSDVersion,
            osvi.dwBuildNumber & 0xFFFF);
      }

      break;

      // Test for the Windows Me/98/95.
      case VER_PLATFORM_WIN32_WINDOWS:

      if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 0)
      {
          printf ("Microsoft Windows 95 ");
          if (osvi.szCSDVersion[1]=='C' || osvi.szCSDVersion[1]=='B')
             printf("OSR2 " );
      } 

      if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 10)
      {
          printf ("Microsoft Windows 98 ");
          if ( osvi.szCSDVersion[1]=='A' || osvi.szCSDVersion[1]=='B')
             printf("SE " );
      } 

      if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 90)
      {
          printf ("Microsoft Windows Millennium Edition\n");
      } 
      break;

      case VER_PLATFORM_WIN32s:

      printf ("Microsoft Win32s\n");
      break;
   }
   return TRUE; 
}

Re: MSDN examples

Waldermort12-Feb-07 13:35