C / C++ / MFC Discussion Boards

godspeed12327-Dec-06 16:45

27-Dec-06 16:45

Hi,

So I finished adding everything that you said and I could load the new filter in graphEdit. I kept the name the same as the sample, I am updating CPushSourceDesktop.

So now I want to be able to go into another C++ program and set this filter up.

Is the declaration to get it instantiated as follows:

CPushSourceDesktop *pMyFilter;

and then do this

hr = CoCreateInstance(CLSID_PushSourceDesktop, NULL, CLSCTX_INPROC_SERVER,
IID_IBaseFilter, reinterpret_cast<void**>(&pMyFilter));
hr = pGraph->AddFilter(pMyFilter, L"PushSource Desktop Filter");

IMySourceFilter *pifMySource = NULL;
pMyFilter->QueryInterface(IID_IMySource, reinterpret_cast<void**>(&pifMySource));

Its giving me linking errors :

error LNK2001: unresolved external symbol _IID_IMySource
error LNK2001: unresolved external symbol _CLSID_PushSourceDesktop

I included everything

#include "Dshow.h"
#include "Qedit.h"
#include "Streams.h"
#include "PushGuids.h"
#include "PushSource.h"

and the lib I included Strmiids.lib Quartz.lib MemorySource.lib

Any help would be appreiciated

Re: Directshow question

Mark Salsbery28-Dec-06 5:35

Mark Salsbery

28-Dec-06 5:35

The underscores preceding the symbols are suspicious Smile | :)

Did you include this file (above your GUID definitions)

#include <initguid.h>

and use the DEFINE_GUID macro to define them?

// {AAAAAAAA-AAAA-AAAA-AAAA-AAAAAAAAAAAA}
DEFINE_GUID(CLSID_PushSourceDesktop,
0xaaaaaaaa, 0xaaaa, 0xaaaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa);

Re: Directshow question

godspeed12328-Dec-06 14:13

godspeed123

28-Dec-06 14:13

Hi,

Thanks for the response. I added the #include <initguid.h> and it compiled, but when I run the program and I have written

hr = CoCreateInstance(CLSID_PushSourceDesktop, NULL, CLSCTX_INPROC_SERVER,
IID_IBaseFilter, reinterpret_cast<void**>(&pMyFilter));
hr = pGraph->AddFilter(pMyFilter, L"PushSource Desktop Filter");

The program crashes with an error Module MemorySource.ax, 2 objects left active!
At line 316 of dllentry.cpp

And then the program aborts.

Does anyone know why this is happening

Re: Directshow question

godspeed12328-Dec-06 16:12

godspeed123

28-Dec-06 16:12

I have added my test code here

http://www.ece.ubc.ca/~npatel/DShowTestApplication.zip[^]

And the source code which is just the source filter is below.

http://www.ece.ubc.ca/~npatel/MemorySource.zip[^]

Whenever I run this program it gets the error that I wrote above.

In the com class I have written a function hello that will output a messagebox, but it never gets to there.

Any help on what I am doing wrong is greatly appreciated

Re: Directshow question

Mark Salsbery30-Dec-06 12:09

Mark Salsbery

30-Dec-06 12:09

I can't figure out what's up.

If I substitute one of my known working filters then it works fine.
I tried to build a filter from scratch using your code and it fails (I'm not saying it's your
code - I mean just using your test hello() method).

If I see something or something comes to mind I'll let you know!

Confused | :confused:

Re: Directshow question

Mark Salsbery30-Dec-06 7:54

Mark Salsbery

30-Dec-06 7:54

Which line does the crash occur on? CoCreateInstance()?

I can't test your code since it has the PVxx.h header file that's missing.

Mark

Re: Directshow question

godspeed12330-Dec-06 9:58

godspeed123

30-Dec-06 9:58

Hi,

Thanks for the response.

The error occurrs on the AddFilter line, the PVxx.h you can delete, I am not using it in the filter.

I was just fooling around with things trying to get it to work.

Problem in saving Files and Folders

vijay_aroli26-Dec-06 5:52

vijay_aroli

26-Dec-06 5:52

hello everyone,

i am trying to save some files and folders onto a FTP server. i can successfully create the tree structure of the files and folders onto an FTP running Windows. but the operation fails when i try to save the same tree structure onto an FTP server running Linux on it.

may be the CFtpConnection:: CreateDirectory() function works only on the FTP servers running windows Operation System on it, is it??? i am not sure. can anyone please help me.

Thanks..

vijay.

Re: Problem in saving Files and Folders

Mark Salsbery26-Dec-06 7:00

Mark Salsbery

26-Dec-06 7:00

vijay7173 wrote:
FTP server running Linux on it

There's your problem right there Wink | ;)

Seriously, though, are you getting an error returned from CreateDirectory()?
Are you specifying a correct/appropriate path?

Re: Problem in saving Files and Folders

vijay_aroli26-Dec-06 8:26

vijay_aroli

26-Dec-06 8:26

Mark Salsbery wrote:
are you getting an error returned from CreateDirectory()?

yes sir.the CreateDirectory() returns 0. Frown | :(

more over it returns with an error code of 12003 OMG | :OMG:

and i am not able to make out what exactly the error is about.

Mark Salsbery wrote:
Are you specifying a correct/appropriate path?

yes, i am giving the correct path. the problem is that, i am sometimes successful in saving the tree to the FTP server with Linux running on it. but the Hierarchy is not preserved. i.e, the entire tree is saved at a same level. eg: a file with path, say, /root/folder1/folder2 the directory folder2 is created and saved under root folder, where as it should be saved in folder1(which is in turn saved under root). i have checked the path and i am sure that i am giving the right path. i even made sure to see that the path is not modified in between.

can i know what i should do to make my tree save to be saved onto the FTP server with Linux on it??? I am using the member functions of CFtpConnection class. should i use any alternatives(if there are any)?? Confused | :confused:

vijay.

Re: Problem in saving Files and Folders

Mark Salsbery26-Dec-06 8:43

Mark Salsbery

26-Dec-06 8:43

vijay7173 wrote:
more over it returns with an error code of 12003 and i am not able to make out what exactly the error is about.

INFO: WinInet Error Codes (12001 through 12156)[^]

12003 ERROR_INTERNET_EXTENDED_ERROR
An extended error was returned from the server. This is
typically a string or buffer containing a verbose error
message. Call InternetGetLastResponseInfo to retrieve the
error text.

What is the current directory (use CFtpConnection::GetCurrentDirectory()) before you try to create
a directory?

Re: Problem in saving Files and Folders

vijay_aroli26-Dec-06 9:11

vijay_aroli

26-Dec-06 9:11

Mark Salsbery wrote:
What is the current directory (use CFtpConnection::GetCurrentDirectory()) before you try to create
a directory?

well sir, the server connected me to the Root Directory (i.e, '/'). and every time i use CFtpConnection::SetCurrentDirectory() to set the directory when i am supposed change it.

vijay.

Re: Problem in saving Files and Folders

Mark Salsbery26-Dec-06 11:27

Mark Salsbery

26-Dec-06 11:27

Hmmm I don't know.

Can you post the code you use?

Have you tried InternetGetLastResponseInfo() to see if there's a meaningful error message?

Convert char array into CString

Johpoke26-Dec-06 5:08

Johpoke

26-Dec-06 5:08

I have a char array like the prevois one, ( char data[64] = "101...........)

but now i need to convert all of that char array into a normal mfc CString, without the char ender ofcourse.

How is this easily done?

ive played with strcpy, but couldnt get it to work,

thanks!!!!

/Johannes

Re: Convert char array into CString

Mark Salsbery26-Dec-06 5:36

Mark Salsbery

26-Dec-06 5:36

Johpoke wrote:
without the char ender ofcourse

If it's a non-Unicode build you can use

CString str = data;

For a unicode build you can use

TCHAR data[64] = "101...........";
CString str = data;

For a unicode build where the string must stay a char type you can use

char data[64] = "101...........";
CStringA str = data;

For a unicode build where the data must stay a char type but the CString is UNICODE you can use

char data[64] = "101...........";
CString str = CA2T(data);

Re: Convert char array into CString

Johpoke26-Dec-06 6:30

Johpoke

26-Dec-06 6:30

Thanks, its fixed,

and yet another problem, with my char array, i now need to set it, but it doesnt seem to work, ie.

char data[64];
data = "011111....";
[im feeding it the right amount of char

any ideas?

thanks

/Johannes

Re: Convert char array into CString

Mark Salsbery26-Dec-06 6:36

Mark Salsbery

26-Dec-06 6:36

Johpoke wrote:
im feeding it the right amount of char

Are you saying there's 64 characters in your initialization string? If so then that's bad Smile | :)

You need to have room for the NULL terminator. If you need 64 chars then define your data
variable to a length of 65.

Re: Convert char array into CString

Johpoke26-Dec-06 6:39

Johpoke

26-Dec-06 6:39

yea i know about the end part the /0 or if its a \0 but i use 63 of them, 64 with that, but i just need to be able to set all of it like

data = "10100010.....

its probably something simple im forgetting as usual-..

thanks

/Johannes

Re: Convert char array into CString

Mark Salsbery26-Dec-06 6:56

Mark Salsbery

26-Dec-06 6:56

Johpoke wrote:
its probably something simple im forgetting as usual-..

Instead of

char data[64];
data = "011111....";

try

char data[64] = "011111....";

or

char data[64];
strcpy(data, "011111....");

Re: Convert char array into CString

prasad_som26-Dec-06 18:25

prasad_som

26-Dec-06 18:25

Johpoke wrote:
char data[64];
data = "011111....";