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

Waldermort

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

Waldermort

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