C / C++ / MFC

Re: About Windows Explorer-style TreeView

1-Apr-05 2:54

http://www.codeproject.com/treectrl/shelltreectrl.asp[^]

Don't try it, just do it! Wink | ;-)

Kim Myong1-Apr-05 3:41

Kim Myong

1-Apr-05 3:41

Thank you!

And would you let me know how can implement Explorer-style file list view?

Regards.

Re: About Windows Explorer-style TreeView

Alexander ^M.,1-Apr-05 3:47

1-Apr-05 3:47

Sorry, I'm not your personal teacher and I'm not doing your homework for you.
If you're too lazy to search an article yourself, then I can't help you anymore.

Don't try it, just do it! Wink | ;-)

MFC Toolbox

charu1231-Apr-05 1:32

charu123

1-Apr-05 1:32

HI ,

I was just trying to create a tool box application but suddenly realised that i have no ideahow to go about doing it.

If somebody could guide me how i can go about implementing it I would be very happy to learn and try it out.

thanks

U get wht u Give

Re: MFC Toolbox

Maximilien1-Apr-05 2:50

Maximilien

1-Apr-05 2:50

What's a toolbox ?

something part of an existing application you are building or something new ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: MFC Toolbox

charu1233-Apr-05 17:19

charu123

3-Apr-05 17:19

I have to build my own tool box.

U get wht u Give

Access File Copy

Halberad1-Apr-05 0:51

Halberad

1-Apr-05 0:51

I am new to C++ and I am trying to write a small program that would backup an access database file from the hard drive to a zip drive.

I would appreciate any help.

Thank you.

Alexander ^M.,1-Apr-05 2:57

1-Apr-05 2:57

Sounds very much like "do my homework for me please".

But I don't care....

Get a library for creating zip files from the internet, and use it.. that is the rough description of what you have to do.

Don't try it, just do it! Wink | ;-)

Halberad1-Apr-05 3:12

Halberad

1-Apr-05 3:12

Sorry I have not been in school for a long time....., I have not used C++ for a few years and was trying to relearn it. I have been trying to figure out how to use the ifstream and ofstream with no luck.

Sigh | :sigh:

David Crow1-Apr-05 4:01

David Crow

1-Apr-05 4:01

Can't you use CopyFile() or SHFileOperation()? If not, then I guess I don't understand the question. Is there something special about a Zip drive (I've never used one)? Don't you just copy files to it like any other drive?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

DLL question - correction

Blake Miller1-Apr-05 4:58

Blake Miller

1-Apr-05 4:58

Nothing special about ZIP drive, except you might (more like probably) get error if no disk is in it. Otherwise, pretty much just like a floppy or any other read/rite drive. I also suspect the CopyFile or SHFileOperation will work just fine.

eli1502197931-Mar-05 23:46

Re: DLL question - correction

31-Mar-05 23:46

Hi,
I need to write dll for another MFC application.
I've wrote the dll using MFC DLL wizard (regular dll using shared MFC dll).
In my DLL header there is th followung declarations:

#define TCPDLL_API __declspec(dllexport)
TCPDLL_API int WINAPI FLRInitializeIP(IPStruct *Server,int num_of_radars);

and in my "dll.def" there is the next declaration:

FLRInitializeIP	   @1

Also,the implementation of the function is:

TCPDLL_API int WINAPI FLRInitializeIP(IPStruct *Server ,int num_of_radars)
{
	struct hostent *Host;
	SIZE_T t=100;
	char *host_name = new char[100];
	gethostname(host_name,t);	
         Host = gethostbyname(host_name);
	Server->HostIP = inet_ntoa(*((struct in_addr*)Host->h_addr));
	delete []host_name;
	//Server->ClientsArray = new FLR_COMMUNICATION_DEVICE[num_of_radars];	
         //for(int i = 0 ; i < num_of_radars ; i++)
	//{	
         //	Server->ClientsArray[i].socket = INVALID_SOCKET;	
         //	Server->ClientsArray[i].IP_Address.Empty();	
         //}
	Server->Num_Of_Connected_Clients = 0;
         Server->ListeningSocket = INVALID_SOCKET; 
         Server->Num_Of_Radars = num_of_radars;
	if(CreateTCPServerSocket(Server) != LISTEN_SUCCESS)
		return 0;//LISTEN_FAILED;	          
         return 1;//LISTEN_SUCCESS;
}

Finally,I'm using the dll :

typedef int (CALLBACK* FLRInitializeIP_PROCCESS)(IPStruct* ,int);
void CDLLTestDlg::OnListenButton()
{
    HINSTANCE hLib;
    FLRInitializeIP_PROCCESS FLRInitializeIP;
    IPStruct Server; 
    int result;
    hLib = LoadLibrary("TCP_DLL.dll");
    FLRInitializeIP = (FLRInitializeIP_PROCCESS)GetProcAddress(hLib,"FLRInitializeIP");
    //(FLRInitializeIP)(&Server , 1);
    result = FLRInitializeIP(&Server , 1);  
    m_List.AddString(Server.HostIP);
    FreeLibrary(hLib);
}

Well,I don't get compilation errors,but if the return value
of FLRInitializeIP() is anything else but "void"- i get run time error(something about convention error...).
But, if the return value is "void" there is no error.
When i'm debugging my code - the function works fine and the
error accurs after

return 0

return 1

Can anyone help me with this error?
Is there good tutorial about dll programing?
Maybe I've wrote the wrong DLL project?

Regards,
Eli Confused | :confused:

Alexander ^M.,1-Apr-05 2:37

Re: DLL question - correction

1-Apr-05 2:37

Why are you using a MFC dll for a function that does not use MFC?

Don't try it, just do it! Wink | ;-)

eli150219791-Apr-05 2:46

Re: DLL question - correction

1-Apr-05 2:46

well - you see only one function from the DLL.
in other functions i use MFC object(i.e CString....).

vishalmore1-Apr-05 20:44

vishalmore

1-Apr-05 20:44

Hi Eli,

Your "dll.def" should look like below

FLRInitializeIP

And also the declearation of function should be like this:
int WINAPI FLRInitializeIP(IPStruct *Server ,int num_of_radars);

It might solve ur problem. Smile | :)

Cheers,
Vishal

DLL question

eli1502197931-Mar-05 23:26

31-Mar-05 23:26

Hi,
I need to write dll for another MFC application.
I've wrote the dll using MFC DLL wizard (regular dll using shared MFC dll).
in my DLL header there is th followung declarations:

#define TCPDLL_API __declspec(dllexport)
TCPDLL_API int WINAPI FLRInitializeIP(IPStruct *Server,int num_of_radars);

and in my "dll.def" there is the next declaration:

FLRInitializeIP	   @1

also,the implementation of the function is:

TCPDLL_API int WINAPI FLRInitializeIP(IPStruct *Server ,int num_of_radars)
{
	struct hostent *Host;
	SIZE_T t=100;
	char *host_name = new char[100];
	gethostname(host_name,t);
	Host = gethostbyname(host_name);
	Server->HostIP = inet_ntoa(*((struct in_addr*)Host->h_addr));	
         delete []host_name;
	//Server->ClientsArray = new FLR_COMMUNICATION_DEVICE[num_of_radars];
	//for(int i = 0 ; i < num_of_radars ; i++)
	//{	
        //	Server->ClientsArray[i].socket = INVALID_SOCKET;
	 //	Server->ClientsArray[i].IP_Address.Empty();	//}	Server->Num_Of_Connected_Clients = 0;
	Server->ListeningSocket = INVALID_SOCKET;	
         Server->Num_Of_Radars = num_of_radars;
	if(CreateTCPServerSocket(Server) != LISTEN_SUCCESS)		return 0;//LISTEN_FAILED;	
         return 1;//LISTEN_SUCCESS;}

finally,í'm using the dll :

typedef int (CALLBACK* FLRInitializeIP_PROCCESS)(IPStruct* ,int);void CDLLTestDlg::OnListenButton() {    HINSTANCE hLib;    FLRInitializeIP_PROCCESS FLRInitializeIP;    IPStruct Server;    int result;    hLib = LoadLibrary("TCP_DLL.dll");    FLRInitializeIP = (FLRInitializeIP_PROCCESS)GetProcAddress(hLib,"FLRInitializeIP");	//(FLRInitializeIP)(&Server , 1);	result = FLRInitializeIP(&Server , 1);	m_List.AddString(Server.HostIP);    FreeLibrary(hLib);}

Re: DLL question

Cedric Moonen31-Mar-05 23:28

Cedric Moonen

31-Mar-05 23:28

That's nice...

Hum, ..... and what's the question ?? Smile | :)

Re: DLL question

eli1502197931-Mar-05 23:50

Wave file player using drag bar.

31-Mar-05 23:50

I've wanted to edit my question and i clicked the "submit" button instead of the "preview" button.
The correct message is above.

Regards,
Eli:->

Re: DLL question

toxcct1-Apr-05 1:59

toxcct

1-Apr-05 1:59

but did you also tried to "Modify" your post ? (have a look at the bottom-right of your message ; you might see an interesting link ! )

Poke tongue | ;-P

TOXCCT >>> GEII power
[toxcct][VisualCalc]

hasansheik31-Mar-05 23:12

hasansheik

31-Mar-05 23:12

Hey I am developing a wave file player using wavein waveout api. I want to provide a fecility for fast foward and fast rewind using a dragbar control. please help me how do i find the total playing time of the wave file.

Yours
Hasan

Contact him at: hasansheik@hotmail.com
hasansheik@yahoo.co.in
hasansheik@lycos.com

Re: Wave file player using drag bar.

Alexander ^M.,1-Apr-05 2:40

Re: locked workstation and stack overflow

1-Apr-05 2:40

Calculate it.
Get the size of the data chunk and the WAVEFORMATEX struct.

Bits per second = nChannels * nSamplesPerSec * wBitsPerSample; (for uncompressed WAV)
Length (in seconds) = ( filesize * 8 ) / Bits per second;

Don't try it, just do it! Wink | ;-)

Alexander ^M.,1-Apr-05 2:53