C / C++ / MFC Discussion Boards

Halberad1-Apr-05 0:51

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.

Re: Access File Copy

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

Alexander ^M.,

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 | ;-)

Re: Access File Copy

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:

Re: Access File Copy

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

Re: Access File Copy

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.

DLL question - correction

eli1502197931-Mar-05 23:46

eli15021979

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:

Re: DLL question - correction

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

Alexander ^M.,

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 | ;-)

Re: DLL question - correction

eli150219791-Apr-05 2:46

eli15021979

1-Apr-05 2:46

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

Re: DLL question - correction

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

eli15021979

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

eli15021979

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]

Wave file player using drag bar.

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

Alexander ^M.,

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 | ;-)

Re: locked workstation and stack overflow

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

Alexander ^M.,

1-Apr-05 2:53

Use a debugger and find out that routine caused the stack overflow.

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

Looking for tool to translate my soft

yarp31-Mar-05 23:00

yarp

31-Mar-05 23:00

Hi,
I'm looking for a software that would help me translate my soft. I have a dozen plugins with embedded resources so I have a lot of resources dlls to generate.
Do you know some tool where I would be able to edit all languages and that would then generate the missing plugins resources ?

Above all I'm looking for an intuitive not too expensive software.

I've studied tools here at CodeProject like LocalizeRC and Language Builder, but none of them fits my need.
Any suggestion someone ?

Yarp
http://www.senosoft.com/

Re: Looking for tool to translate my soft

John R. Shaw31-Mar-05 23:34

John R. Shaw

31-Mar-05 23:34

No! But it looks like you're looking for magic. Forget the plugins, what you want is .dll files based on the language.

Now; If you want to try and be sneeky: take advantage of googles' translate page (let them translate; and then copy the results).

yarp wrote:
Do you know some tool where I would be able to edit all languages and that would then generate the missing plugins resources ?

It's is a dream of many programmers but I am sorry that it is nor reality.

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

Re: Looking for tool to translate my soft

yarp1-Apr-05 1:29

yarp

1-Apr-05 1:29

I'm sorry I think I've seen such a tool, like WinTranRC and also RC Localize. Maybe I didn't explained myself correctly.

I have a software with severall plugins. Those plugins are not resource dlls, they are plugins dlls. I would like to translate my whole soft, which includes translating the plugins.
If I support say 10 foreign languages, I will have 120 languages dlls to maintain. Since I can't handle so many dlls I would need a tool that would read the english resource file of each plugin and generate the translated RC files.
I don't necessarily ask for a single click solution, I can repeat the operation 12 times (1 for each plugin).

Copying the result in translated RCs is just what I want to avoid, I want to do it once and then forget.

Yarp
http://www.senosoft.com/

Your Opinion...

NewbieStats31-Mar-05 22:59

NewbieStats

31-Mar-05 22:59

If your making a program that has constant communication between computers... Would you find a box and turn it into a server and write a server/client program?... or would you Pay for a domain and "run" all data in the exe thru and from with http?

*** Edit: Constant Communication NOT being chatting, but rather data sharing ***
/* Just a Human Trying to Live in a Computers World. */

Re: Your Opinion...

ThatsAlok31-Mar-05 23:11

ThatsAlok

31-Mar-05 23:11

Depends upon the network location,if computers are in same room building sockets are better idea!!

but if one computer is in delhi ,another in sydney or LA then HTTP will be much better idea!!

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

How to get USB Mass Storage Device info?

delemur31-Mar-05 22:46

delemur

31-Mar-05 22:46

Hi I have the disk letter of USB Mass Storage Device.
I want to get such info as "Model", "SerialNumber" and etc for USB device.
How I can do this ? Show me the way, please.
Thank you

Hook chains

Member 44888031-Mar-05 22:38

Member 448880

31-Mar-05 22:38

Hello, is it possible to know which application has installed which hook ?

Re: Hook chains

ThatsAlok31-Mar-05 22:50

ThatsAlok

31-Mar-05 22:50

For that you have to hook SetWindowHookEx(..) itself

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Re: Hook chains

David Crow1-Apr-05 4:05

David Crow

1-Apr-05 4:05

How about a call to SetWindowsHookEx(WH_DEBUG, ...)?

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

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