C / C++ / MFC

20-May-07 21:00

Hi all.

I have problem wen I try to start process, wen I write:

<br />
try<br />
{<br />
STARTUPINFO lpStartupInfo;<br />
PROCESS_INFORMATION lpProcessInformation;<br />
<br />
memset(&lpStartupInfo,0,sizeof(STARTUPINFO));<br />
lpStartupInfo.cb = sizeof(lpStartupInfo);<br />
<br />
CreateProcess(<br />
  L"C:\\vaxo\\My.exe",<br />
  NULL,<br />
  NULL,<br />
  NULL,<br />
  FALSE,<br />
  CREATE_NEW_CONSOLE,<br />
  NULL,<br />
  NULL,<br />
  LPSTARTUPINFO lpStartupInfo,<br />
  LPPROCESS_INFORMATION lpProcessInformation<br />
);<br />
}<br />
<br />
catch()<br />
{<br />
// some error handle<br />
}<br />
<br />

in this code my program starts new process, but if I try to set console string I get some debag error:
"Unhandled exception at 0x77e4ae84 in Process.exe: 0xC0000005: Access violation writing location 0x00418312."
Console string is "C:\\vaxo\\My.exe", I try "C:\vaxo\My.exe", but I stile get this error message

dharani20-May-07 21:15

dharani

20-May-07 21:15

Did you initialize lpProcessInformation ?
See the example below
STARTUPINFO si;
PROCESS_INFORMATION pi;

ZeroMemory( &si, sizeof(si) );
si.cb = sizeof(si);
ZeroMemory( &pi, sizeof(pi) );

si.lpReserved = NULL;
si.lpReserved2 = NULL;
si.cbReserved2 = 0;
si.lpDesktop = NULL;
si.dwFlags = 0;

if(!CreateProcess(NULL,
"Yourpathhere",
NULL,
NULL,
FALSE,
0,
NULL,
NULL,
&si,
&pi))
{
...failed
}

redindian

david bagaturia20-May-07 21:20

20-May-07 21:20

Thanks for help.
but I still have this problem.

dharani20-May-07 21:28

dharani

20-May-07 21:28

did it work ? Unsure | :~

redindian

david bagaturia20-May-07 21:33

20-May-07 21:33

thanks for help.

but I still have this problem

Stephen Hewitt20-May-07 21:51

Stephen Hewitt

20-May-07 21:51

Will this even compile? Look at the last two arguments to CreateProcess.

Lose the try/catch blocks; CreateProcess doesn't throw exceptions to indicate errors and any exceptions it does throw (such as access violations) will almost certainly be your fault and should be allowed to propergate to the debugger so the problem can be fixed. I’ll gloss over the issue that the fact that try/catch can even catch access violations (and other such exceptions) is non-standard and later MS compilers have been fixed in this regard (although the old buggy behaviour can be re-enabled via a compiler switch).

Here's an example:

// Win32App.cpp : Defines the entry point for the application.
//
 
#include "stdafx.h"
 
int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
	STARTUPINFO si = {0};
	si.cb = sizeof(si);
	si.lpTitle = "Use this as the title!";
 
	PROCESS_INFORMATION pi;
 	BOOL bOK = CreateProcess(
			"C:\\Commands\\AnyKey.exe",
			NULL,
			NULL,
			NULL,
			FALSE,
			CREATE_NEW_CONSOLE,
			NULL,
			NULL,
			&si,
			&pi
			);
	if (bOK)
	{
		// If 'CreateProcess' succeeds the HANDLES in 'pi' should be closed unless you need them.
		// Failing to close them results in resource leaks!
		CloseHandle(pi.hProcess);
		CloseHandle(pi.hThread);
	}
 
	return 0;
}

Steve

david bagaturia20-May-07 22:46

Re: Motion Detection in VC++

20-May-07 22:46

thanks. it help, but now I get another problem.
I can start my process, but tis process is console and I must set parametrs in command line. and I dont know how to do this.

Motion Detection in VC++

tyagineha20-May-07 20:02

tyagineha

20-May-07 20:02

hye,
i m trying to record video on motion detection in VC++.
Can anybody tell the exact procedure i should apply
motion detection has started but i dnt know how to write code for recording the video on motion detection.....

Neha

bankai12320-May-07 21:59

bankai123

20-May-07 21:59

There isn't a exact procedure to implementing motion detection. There are many algorithms for doing that, and searching the articles on this site anf google should bring up some results.

Good luck

Re: Motion Detection in VC++

tyagineha20-May-07 22:35

tyagineha

20-May-07 22:35

i have used following four functions for motion detection part only:
1)AdjustMotionDetectPrecision()
2)SetupMotionDetection()
3)StartMotionDetection()
4)MotionAnalyzer()
using these four functions,motion detected has started.
but i dnt knw how to start recording????
i m sending u some code :

here it is::::

if(frameType > 0)
{
if(frameType == PktSysHeader)
{

memcpy(FileHeader[channelNum], DataBuf, Length);
FileHeaderLen = Length;
}

if(frameType == PktIFrames || frameType ==PktSubIFrames)
{
status = 1;
}
else
{
status = 0;
}
if(frameType == PktMotionDetection)
{
int result[4];
if(bOverlayMode)
{
hkdlg->m_VideoWin.DrawVectEx(channelNum, (char *)DataBuf);
}
else
{
hkdlg->m_bMoving[channelNum] = TRUE;
memcpy(motionData[channelNum],(char*)DataBuf,Length);
}
MotionAnalyzer(ChannelHandle[channelNum],(char*)DataBuf,15,result);
if((result[0] + result[1] + result[2] + result[3]))
{
if (channelNum ==0)
TRACE("!!!!!!!CH=%d motion detect result is %d %d %d %d\n",channelNum,result[0],\
result[1],result[2],result[3]);
//The function Trigger() do the following operation: write the video&audio data which are before the motion frame to file

if(!hkdlg->baftermotion[channelNum])
alarmFile[channelNum].Trigger(gFileHandle[channelNum]);

//when the motion frame returns,clear ualreadywriteframes[channelNum] and set it as 0 ,be ready for writing the video&audio data after motion

hkdlg->ualreadywriteframes[channelNum]=0;
hkdlg->baftermotion[channelNum]=TRUE;
}

return 0;
}
if(frameType == PktOrigImage)
{
return 0;
}

In this code should i start recording after motionanalyser() function?????????????

Neha

Re: Motion Detection in VC++

Hamid_RT22-May-07 19:23

Hamid_RT

22-May-07 19:23

I am searching about an object on the codeproject and sudden see Motion Detection Algorithms[^] and remembered that a OP aksed about motion detection so I repled to you.;)

WhiteSky

Disable sounds

rrrado20-May-07 19:53

20-May-07 19:53

Is there some way how to disable playing of the system sounds (stored in registry) or any sounds for some process only?
I need to turn off sounds in webbrowser hosted in my application but I don't want to turn them off for IE globally.
Thank you!

rrrado

Hamid_RT20-May-07 20:09

Hamid_RT

20-May-07 20:09

See

HKEY_CURRENT_USER\AppEvents\Schemes\Apps\Explorer\Navigating\.Current

and see http://www.codeproject.com/audio/mixerSetControlDetails.asp[^] of DavidCrow is helpfuls for you.

WhiteSky

rrrado20-May-07 20:12

20-May-07 20:12

Thank you but this will disable sounds not only for my webbrowser but also for IE

rrrado

David Crow21-May-07 3:36

David Crow

21-May-07 3:36

WhiteSky wrote:
and see http://www.codeproject.com/audio/mixerSetControlDetails.asp[^] of DavidCrow is helpfuls for you.

Which would disable all sounds. Not exactly the desired result.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

zhang80060520-May-07 20:59

zhang800605

20-May-07 20:59

Sorry for my poor English .

There is a way to resolve this issue , but I didn't try it . That is to write a monitor-program hook all playsound funtion and make it(playsound funtion) disabled for the process.

rrrado20-May-07 21:26

20-May-07 21:26

But how can I hook to PlaySound calls?

rrrado

zhang80060521-May-07 0:10

zhang800605

21-May-07 0:10

Sorry for my poor English .

You should study the hooks .

If you search the hook as the keyword in this website, you could find something.

rrrado21-May-07 22:21

How to get word capture from another application using hooks concepts?

21-May-07 22:21

Thank you!

rrrado

A.Venkata ramana20-May-07 19:27

A.Venkata ramana

20-May-07 19:27

Hi to All?

Could Any one help me? How to get word capture from another GUI application using hooks concept in VC++?

Thanks & Regards,

Ramana AV.

Confused | :confused:

Re: How to get word capture from another application using hooks concepts?

Rajesh R Subramanian20-May-07 20:01

Rajesh R Subramanian

20-May-07 20:01

What do you mean by word capture?

Nobody can give you wiser advice than yourself. - Cicero

Software failing when distributed

Stick^20-May-07 18:00

Stick^

20-May-07 18:00

It seems that whenever I distribute an application, it never works on my first beta testers computer, even though they are running the same O/S (Windows XP), with the latest DirectX (April 2007).

Anyone else run into this problem? What do you do to solve it?

Patrick

Re: Software failing when distributed

rrrado20-May-07 20:17