Re: Want to write a video/audio interaction software using VC. - C / C++ / MFC Discussion Boards

Philip Patrick3-Apr-03 0:14

3-Apr-03 0:14

::CreateDirectory will do the work if you already have a parent directory. If you want to create a directory "sequence" (e.g. parent doesn't have to exist), here is an example of such function:

bool CreateDirectorySeq(IN LPCTSTR lpszDirPath)
{
	TCHAR szShorterPath[MAX_PATH];
	TCHAR szDirectory[MAX_PATH];
	if(!CreateDirectory(lpszDirPath, NULL)){
		_tcscpy(szDirectory, lpszDirPath);
		if(szDirectory[_tcslen(szDirectory) - 1] == TCHAR('\\'))
			szDirectory[_tcslen(szDirectory) - 1] = TCHAR('\0');
		LPSTR lpszLastDir = _tcsrchr(szDirectory, TCHAR('\\'));
		if(lpszLastDir == NULL)
			return true;
		ZeroMemory(szShorterPath, MAX_PATH);
		_tcsncpy(szShorterPath, szDirectory, _tcslen(szDirectory) - _tcslen(lpszLastDir));
	}else
		return true;
	
	if(CreateDirectorySeq(szShorterPath))
		return (CreateDirectory(szDirectory, NULL) == TRUE);
	
	return false;
}

Philip Patrick
Web-site: www.stpworks.com
"Two beer or not two beer?" Shakesbeer

Re: How to create a directory

Mikey_E16-Jun-04 7:39

Mikey_E

16-Jun-04 7:39

Excellent function that helped out a lot, thanks for posting it!

Mike Ellertson

Want to write a video/audio interaction software using VC.

George22-Apr-03 23:25

George2

2-Apr-03 23:25

Hi, everyone!

I want to know where can I find a software that can do
PtoP video and audio interactions between two ends of users,
just like netmeeting.

Additional requisite is:

1. it runs on windows platform;
2. it is open source project.

Thanks in advance,
George

Re: Want to write a video/audio interaction software using VC.

extremalis6-Apr-03 3:12

extremalis

6-Apr-03 3:12

Hey pal,

sorrie I am not able to offer any help, but jus wanna tell you that I am in the same boat. Trying to find something along that line, cos needed to tweak something when doing conferencing.

Just to let you know that somewhere out there, there is another fella that is desperately doing so as well, hope that eases your woes of sort. FYI, I have not managed to find any.

Trying my best to write one myself one, though I am a complete newbie. Will keep you posted if i find any. Or if i successfully write out something. Hope you will do the same too.

Cheers
extremalis
<extremalis@catcha.com>

Re: Want to write a video/audio interaction software using VC.

George27-Apr-03 22:00

George2

7-Apr-03 22:00

Thanks, extremalis buddie!

I am waiting for you ... Smile | :)

hurryyyyyy~~

regards,
George

Re: Want to write a video/audio interaction software using VC.

extremalis18-Apr-03 14:54

extremalis

18-Apr-03 14:54

hey, jus an update,
I am able to locally display my video after grabbing it from the camera.
Basically, whatever I am doing is definitely not efficient, but I suppose I wanna get something going first, my deadline is getting near, so no point harping on how I can do better. Enuff of crap...this is basically how i did it, I dun have my exact codes now, its in office, kinda hard to get it out too...basically copy it to DIB format, den display a single bitmap, den use a timer to repeat the grab frame and display fast, at about 15fps.

I used the following from VFW:

capGrabFrame: to get a frame from the capture window
capCopyEdit: to copy the stuff to a clipboard i think...
den do the usual stuff for a clipboard, like opening one and closing one..

all these will be copied to a char buffer. I then used these data over at my other dialog box meant to display this to show lor.
used <capstretchblt> coz somehow I could not managed to use <drawdibdraw> which is supposed to be the right command.

It works now, am trying to figure out how best to transfer all these via socket to the other end. Hope that you are making good progress as well.

Regards

Re: Want to write a video/audio interaction software using VC.

George218-Apr-03 18:24

George2

18-Apr-03 18:24

Hi, extremalis buddy!

Maybe our purpose is different. I think I need to transfer
the media stream through network. But is that your purpose?

regards,
George

Re: Want to write a video/audio interaction software using VC.

extremalis20-Apr-03 14:55

extremalis

20-Apr-03 14:55

Media stream? Meaning you open an 'avi' file and then you transfer over the network?
My purpose is to capture via the webcam and transfer this thing over the network real time. So I suppose you go find the functions to open an avi file or something into DIB format, you can achieve something similar to mine.
I gotta work on my stuff first, such that it can transfer across the network on Sockets.
Keep me posted on what you are doing, we can exchange views on whatever we are doing, and hopefully we can gain some inspirations from it.

Cheers.

Re: Want to write a video/audio interaction software using VC.

George220-Apr-03 17:51

George2

20-Apr-03 17:51

Hi, extremalis buddy!

Try this,

http://www.banasoft.net/avphone3/demos/sourcedemo.htm

regards,
George

Re: Want to write a video/audio interaction software using VC.

Anonymous20-Apr-03 17:14

Anonymous

20-Apr-03 17:14

Visit here:

http://www.banasoft.net/avphone3/demos/sourcedemo.htm

Re: Want to write a video/audio interaction software using VC.

George220-Apr-03 17:50

George2

20-Apr-03 17:50

Thanks, Anonymous buddy!

George

Get name of process by socket ?

Bash2-Apr-03 21:56

Bash

2-Apr-03 21:56

Hi,

I have a SOCKET handle (in intermediate driver). Is it possible to obtain the name of a process who created this socket ?

Yours sincerely,
Alex Bash

OutputDebugString...

vikramlinux2-Apr-03 21:34

vikramlinux

2-Apr-03 21:34

I am writing the Kernel mode driver.Here I tried use of OutputDebugString()
..But it says
unresolved external symbol __imp__OutputDebugStringA@4
What I need to do? OMG | :OMG:

VIkrams

Re: OutputDebugString...

56789012342-Apr-03 21:57

5678901234

2-Apr-03 21:57

I think you should use KdPrint or DbgPrint.

Re: OutputDebugString...

vikramlinux2-Apr-03 22:38

vikramlinux

2-Apr-03 22:38

I tried using both but it says:
error C2065: 'KdPrint' : undeclared identifier
error C2065: 'DbgPrint' : undeclared identifier

Re: OutputDebugString...

Philip Patrick3-Apr-03 0:08

Philip Patrick

3-Apr-03 0:08

It is in Kernel32.lib, at least this what worked on my machine (Win2k)

Philip Patrick
Web-site: www.stpworks.com
"Two beer or not two beer?" Shakesbeer

translate winsock errors

Dudi Avramov2-Apr-03 20:40

Dudi Avramov

2-Apr-03 20:40

What is the socket dll that holds its error description?
I use FormatMessage to translate winsock error.
when using the handle to WSock32.dll module i get different error description than in MSDN.
For example, error 10061 is "connection refused" but i get "Bad address".
error 10060 is "Connection timed out" but i get "permission denied".

This is the translation code:

LPVOID lpMsgBuf;
HANDLE hModule = GetModuleHandle("WSOCK32.dll");
FormatMessage(
    FORMAT_MESSAGE_ALLOCATE_BUFFER |
    FORMAT_MESSAGE_FROM_HMODULE |
    FORMAT_MESSAGE_IGNORE_INSERTS,
    hModule,
    nErrorCode,
    MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
    (LPTSTR) &lpMsgBuf,
    0,
    NULL
    );

CString text = (LPCTSTR) lpMsgBuf;
LocalFree( lpMsgBuf );

Can anyone help me with this?

Question about WS_SYSMENU

Simon.W2-Apr-03 20:29

Simon.W

2-Apr-03 20:29

Hi guys:
I want to draw the caption bar of frame window in my own style,but the system button(CLOSE) always draw
by system unexpectedly, it cover my drawing. I remove the WS_SYSMENU attribute from windows style,but the

button of my application which shown on system taskbar has had no icon,I want it show icon on taskbar. How can I
resolve this problem, can anyone give me some instructions? Thanks!

I am seeking...
For what?
Why did you ask me for what? I don't know!

Help about appending the latest data to another file.Thanks!

dxhdxh2-Apr-03 20:03

dxhdxh

2-Apr-03 20:03

I have two files:
a.txt:
20020102,23.0
20020103,23.0
.............
20021220,23.5
b.txt:
20010101,22
20010102,25
...........
20010301,35
Now I want to append the latest datas of the file "a.txt" to the file "b.txt". How could I do ! Please tell me the easy way to do it!
The focus is: I want appending the "latest" datas of a.txt to the file bb.txt
The latest datas in the file a.txt are the datas that are not included in the file b.txt.
Note: i only want to append the datas that the b.txt is not included.
Thanks a lot!

Re: Help about appending the latest data to another file.Thanks!

Rage2-Apr-03 22:01

Rage

2-Apr-03 22:01

And what's the problem ? Could you show some code so we can really understand how we could help you ? How did you start ?

With your explanation, the only way to do that is pick up every line of a, check if it is in b, and append it if not. But if you could tell more about the file contents, and how they are updated, maybe we could find something less systematic.

~RaGE();

How to use UNICODE string in VC6?

_skidrow_vn_2-Apr-03 19:59

_skidrow_vn_

2-Apr-03 19:59

How to use UNICODE string in VC6

I use Visual C++ 6.0 with non-MFC (WindowsXPpro)
I wrote code that look like following
But in MessageBox, the message show a mash string, like a binary code,
Can you help me a way to solve problem ?
Thank!, thanks!
[code]
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
//IDS_WCHAR_APPTITLE = 104 = "Cộng hòa xã hội chủ nghĩa Việt Nam"

WCHAR buffer[100];
LoadStringW(hInstance,104,buffer, (WCHAR)sizeof(buffer));
MessageBoxW(NULL,(WCHAR*)buffer,NULL,MB_OK);

return FALSE;
}
[/code]

Visual C++ 6.0 don't support UNICODE string?

C++ related question

John-theKing2-Apr-03 19:45

John-theKing

2-Apr-03 19:45

Hi friends !

Consider scenario

class A
{
  public:
      A()
      {
           cout << "In zero argument constructor";
      }

     A(int val)
      {
           cout << "In one argument constructor";
      }
};

void main()
{

  A *obj;
  obj= new A[20];

  // Blah
}

As you can see above, in main i used statement obj= new A[20];. As such the zero argument constructor gets called. What i want is that this statement cause one argument constructor to get called. How is it possible ??

ThankX.
Bye Bye

Re: C++ related question

Taka Muraoka2-Apr-03 19:59

Taka Muraoka

2-Apr-03 19:59

You can't. What would it call each one with?

Software is everything. It also sucks. Charles Fishman [^]

Awasu 1.0.2 (beta)[^]: A free RSS reader with support for Code Project.

Re: C++ related question

Alvaro Mendez3-Apr-03 5:40

Alvaro Mendez

3-Apr-03 5:40

Technically it's not possible, but you can certainly work around it. The easiest way is to get rid of your default constructor and give your other constructor a default value for its parameter:

A(int val = 17) { ... }

You can also go with more complex solutions, such as global or static member variables which you initialize before creating the array, and then perhaps increment inside the constructor as each element is created.

No matter what you do, all elements of the array will call the same constructor. There's no way out of it.

Regards,
Alvaro

When birds fly in the right formation, they need only exert half the effort. Even in nature, teamwork results in collective laziness. -- despair.com

System.XML – alike class library for Visual C++ 6.0 ?

Serge Krynine2-Apr-03 19:43

Serge Krynine

2-Apr-03 19:43

Good people,

Is there any System.XML – alike class library for Visual C++ 6.0 ?

Thanks,
Serge

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