C / C++ / MFC Discussion Boards

pablo_mag16-Aug-05 14:17

16-Aug-05 14:17

Use the CFileDialog::GetStartPosition() / CFileDialog::GetNextPathName() functions

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_mfc_cfiledialog.3a3a.getstartposition.asp
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_cfiledialog.3a3a.getnextpathname.asp

HTH

Scrollbar on a Popup Dialog

SANJAY7616-Aug-05 4:32

SANJAY76

16-Aug-05 4:32

Hi All,

I have added Vertical Scroll bar to a Pop up dialog at design time.
However Scroll bar doesn't Scroll at run time.

I am adding controls to the dialog at run time.

As Control gets added and dialog size goes beyond screen size I am not able to scroll down and view the controls.

Kindly advise on this.

thanks
Sanjay

Re: Scrollbar on a Popup Dialog

Gary R. Wheeler16-Aug-05 6:41

Gary R. Wheeler

16-Aug-05 6:41

The builtin dialog handling does not support scrolling; you will need to scroll the dialog yourself. Look at the dialog section here on Code Project for ideas on how to do that.

Software Zen: delete this;

Virtual List Control with Groups

AndyCheetham16-Aug-05 2:29

AndyCheetham

16-Aug-05 2:29

Is it possible to use Groups with a virtual list control?

The following line never results evaluates to true, which means I guess that the group id is not being requested?

if(pItem->mask & LVIF_GROUPID)

I am changing an exsiting list control that work in Non-Virtual mode and the groups work great, so I guess I am adding the group correctly.

How would I go about configuring the list control to request the Group ID / info.

Any ideas?

Cheers
AndyC

Operator Overloading

Murad Duraidi16-Aug-05 1:48

Murad Duraidi

16-Aug-05 1:48

I want to use the assignement operator to get data from (CArray) that has items of type (CStringArray):

------------------------------------------------------------------------

CArray <cmstringarray,cmstringarray&> MyList;

CStringArray strArrMyStrArray1;
CStringArray strArrMyStrArray2;

strArrMyStrArray1.Add(TEXT("String11");
strArrMyStrArray1.Add(TEXT("String12");
strArrMyStrArray2.Add(TEXT("String21");
strArrMyStrArray2.Add(TEXT("String22");

MyList.Add(strArrMyStrArray1);
MyList.Add(strArrMyStrArray2);

/////////////////////////////////////////////////

CStringArray strArrMyOUTPUTStrArray;

strArrMyOUTPUTStrArray = MyList.GetAt(1); /// ERROR CStringArray doesn't support (operator = )

-----------------------------------------------------------------------
so; I inhereted the CStringArray (new class CMStringArray) and overladed the (=) operator:

-----------------------------------------------------------------------
CMStringArray& CMStringArray:perator= (const CMStringArray& InputArray)
{
int iCounter;

for( iCounter=0; iCounter

How to get Handle of the specified process and kill the process???

Supriya Tonape16-Aug-05 1:20

Supriya Tonape

16-Aug-05 1:20

Dear All,
Can anybody let me know how to kill the running process (WINDOWS SDK)???
I am using the TerminateProcess() functionin which it requires the Handle of the process...How do I get the handle of process ??? Let me tell U,I am not getting the required Output by GetHandle() method...
Thanks in advance.
Supriya Tonape

Re: How to get Handle of the specified process and kill the process???

ThatsAlok16-Aug-05 2:35

ThatsAlok

16-Aug-05 2:35

Supriya Tonape wrote:
Can anybody let me know how to kill the running process

If you know the Name Of Window that Will Be Faily very Easy to kill that Window/Process.

First By Using FindWindow(...) find the handle of the Window then you can use WM_QUIT/WM_CLOSE message to close that window.
No need to use TerminateProcess in this case

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: How to get Handle of the specified process and kill the process???

Supriya Tonape17-Aug-05 2:54

Supriya Tonape

17-Aug-05 2:54

Thanks Alok!
But I didnt get why do I need to find window when I already wanted to kill the process of specific name.
Anyways but I got the solution, I did it using 'CreateToolhelp32Snapshot()' as it will return handle for snap shot of all running processes in system n further using 'Process32First()' and 'Process32Next()'
Anyways but thanks again for trying to help me.
Regards,
Supriya Tonape

Re: How to get Handle of the specified process and kill the process???

ThatsAlok17-Aug-05 18:04

ThatsAlok

17-Aug-05 18:04

Supriya Tonape wrote:
Anyways but I got the solution, I did it using 'CreateToolhelp32Snapshot()' as it will return handle for snap shot of all running processes in system n further using 'Process32First()' and 'Process32Next()'

Yeah you solution is very Nice! Smile | :)

. you can try my way tooo.. here is a small example to enumerate all the visible window present on desktop!:-

http://alok.bizhat.com/site/tipandtrick.php?tiptype=2&tipid=30#30[^]

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

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: How to get Handle of the specified process and kill the process???

David Crow16-Aug-05 4:06

David Crow

16-Aug-05 4:06

Supriya Tonape wrote:
How do I get the handle of process ???

How about EnumProcesses(), or the Process32First()/Process32Next() pair?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: How to get Handle of the specified process and kill the process???

Supriya Tonape17-Aug-05 3:03

Supriya Tonape

17-Aug-05 3:03

Thanks to U too David.bye
Supriya

Re: How to get Handle of the specified process and kill the process???

Geert van Horrik16-Aug-05 4:18

Geert van Horrik

16-Aug-05 4:18

if you know the executable location, you can use this function:

<br />
bool CMyclass::CloseApplication(CString sFilename)<br />
{<br />
	// Declare variables<br />
	HANDLE hProcessSnap = NULL;<br />
	PROCESSENTRY32 pe32 = {NULL};<br />
	CString sCompare, sTemp;<br />
	CString sProcesm_sFilename = //Extract the filename from the sFilename, so you only have to pass notepad.exe<br />
#if (_MFC_VER < 0x0700)<br />
	sProcesm_sFilename.MakeLower();<br />
#else<br />
	CString sLowerTemp;<br />
	sLowerTemp = sProcesm_sFilename;<br />
	sProcesm_sFilename = sLowerTemp.MakeLower();<br />
#endif<br />
	<br />
	hProcessSnap = CreateToolhelp32Snapshot <br />
		(TH32CS_SNAPPROCESS, 0);<br />
	<br />
	pe32.dwSize = sizeof(PROCESSENTRY32);<br />
	if (Process32First(hProcessSnap, &pe32))<br />
	{<br />
		do<br />
		{<br />
			sCompare.Format("%s", pe32.szExeFile);<br />
<br />
#if (_MFC_VER < 0x0700)<br />
			sCompare.MakeLower();<br />
#else<br />
			CString sLowerTemp;<br />
			sLowerTemp = sCompare;<br />
			sCompare = sLowerTemp.MakeLower();<br />
#endif<br />
<br />
			if (sCompare == sProcesm_sFilename)<br />
			{<br />
				// Get handle to process<br />
				HANDLE hProcess = OpenProcess<br />
					(PROCESS_ALL_ACCESS, FALSE, pe32.th32ProcessID);<br />
				<br />
				DWORD exCode;<br />
				GetExitCodeProcess(hProcess, &exCode);<br />
				TerminateProcess(hProcess, exCode);<br />
			}<br />
		} while (Process32Next(hProcessSnap, &pe32));<br />
	}<br />
	else<br />
	{<br />
		return false;<br />
	}<br />
	<br />
	return true;<br />
}<br />

Geert

Want to spread the newest version of your software automatically for free? Use Updater!
Visit my website: www.gvhsoftware.org

Re: How to get Handle of the specified process and kill the process???

Supriya Tonape17-Aug-05 3:01

Supriya Tonape

17-Aug-05 3:01

thank U Geert but I got late to read Ur soln but did in same manner after R&D.bye
Supriya

Video RAM Usage Indicator

Joel Holdsworth16-Aug-05 0:09

Joel Holdsworth

16-Aug-05 0:09

Does anyone know of a way of measuring/graphing how much Video RAM has been allocated? Is there a (freeware) utilitity to do that?

Joel Holdsworth

Re: Video RAM Usage Indicator

Blake Miller16-Aug-05 5:18

Blake Miller

16-Aug-05 5:18

We have REALLY tried to find this out, and apparently there is no known API for determining such information.

mp3 streaming

sebinfrancis15-Aug-05 23:45

sebinfrancis

15-Aug-05 23:45

i am writing a code for playing an mp3 file.i will first read 2mb from the file and it will put in to a buffer and then i will play it.then the next 2mb will read and so on.but there is an almost 1 second delay after each 2mb.what will be the problem. this is my code Smile | :)

void CMP3PLAYERDlg::OnPlay()
{
m_Video=NULL;

if(m_Video==NULL)
{
m_Video = MCIWndCreate(this->GetSafeHwnd(),
AfxGetInstanceHandle(),
WS_CHILD |MCIWNDF_NOMENU|MCIWNDF_SHOWNAME,m_Path);

m_Play.EnableWindow(FALSE);
//CMP3PLAYERDlg pNewObject = new CMP3PLAYERDlg;
AfxBeginThread(MyThreadProc, this);
}
Pause = FALSE;

}

UINT MyThreadProc( LPVOID pParam )
{
CMP3PLAYERDlg* pObject = (CMP3PLAYERDlg*)pParam;

CMediaType mt;
mt.majortype = MEDIATYPE_Stream;
mt.subtype = MEDIASUBTYPE_MPEG1Audio;
DWORD dwKBPerSec =INFINITE;

HANDLE hFile = CreateFile(pObject->m_Path,
GENERIC_READ,
FILE_SHARE_READ,
NULL,
OPEN_EXISTING,
0,
NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
AfxMessageBox("Could not open "+ pObject->m_Path);

}
ULARGE_INTEGER uliSize;
uliSize.LowPart = GetFileSize(hFile, &uliSize.HighPart);
read=uliSize.LowPart;
uliSize.LowPart=2000000;

PBYTE pbMem = new BYTE[uliSize.LowPart];
if (pbMem == NULL)
{
AfxMessageBox("Could not allocate %d bytes", uliSize.LowPart);

}
do
{

if(read<ulisize.lowpart)
{
="" ulisize.lowpart="read;
" read+="2000000;
" pbyte="" pbmem="new" byte[ulisize.lowpart];
="" }
="" bool="" h="ReadFile(hFile,(LPVOID)pbMem,uliSize.LowPart,&dwBytesRead,NULL)" ;
="" if="" (!h)
="" afxmessagebox("could="" not="" read="" file");
="" closehandle(hfile);
="" break;
=""
="" hresult="" hr="S_OK;
" coinitialize(null);
=""

="" cmemstream="" stream(pbmem,="" (longlong)ulisize.quadpart,="" dwkbpersec);
="" cmemreader="" *rdr="new" cmemreader(&stream,="" &mt,="" &hr);
="" (failed(hr)="" ||="" rdr="=" null)
="" delete="" rdr;
="" create="" filter="" 0x%8.8x",="" hr);
="" couninitialize();
="" rdr-="">AddRef();

hr = CoCreateInstance(CLSID_FilterGraph,
NULL,
CLSCTX_INPROC,
IID_IFilterGraph,
(void **)&pFG);
if(hr!=0)
{
AfxMessageBox("cannot create instance");
}

hr = pFG->AddFilter(rdr, NULL);
IGraphBuilder *pBuilder;

hr = (pFG)->QueryInterface(IID_IGraphBuilder, (void **)&pBuilder);
pin=rdr->GetPin(0);
int n=rdr->GetPinCount();

hr = pBuilder->Render(pin);

pBuilder->Release();

hr = pFG->QueryInterface(IID_IMediaControl, (void **)&pMC);
hr = pFG->QueryInterface(IID_IMediaEvent, (void **)&pME);
OAEVENT oEvent;
hr = pME->GetEventHandle(&oEvent);
hr = pMC->Run();
if (SUCCEEDED(hr))
{
LONG levCode;
hr = pME->WaitForCompletion(INFINITE, &levCode);
read-=2000000;

}

rdr->Release();

}while(dwBytesRead!=read);
pMC->Release();
pME->Release();
if (pFG)
{
ULONG ulRelease = pFG->Release();
if (ulRelease != 0)
{
AfxMessageBox("Filter graph count not 0! was %d", ulRelease);
}
}
CloseHandle(hFile);
CoUninitialize();
pObject->m_Play.EnableWindow(TRUE);
return TRUE;
}

please give me an elaborate answer. Smile | :)

sebin

Problem with serialization

heavenode15-Aug-05 23:40

heavenode

15-Aug-05 23:40

I'm writing a simple flat file database MFC SDI application. However after i save n close the file, i cant open it again and shows 'unexpected file format'.

below is my serialize funcation for the new class, the sequence is correct. What other problem can it be?

void CPerson::Serialize(CArchive &ar)
{
CObject::Serialize(ar);

if (ar.IsStoring())
ar << m_sName << m_sRoom << m_iSex << m_iStatus;
else
ar >> m_sName >> m_sRoom >> m_iSex >> m_iStatus;
}

Re: Problem with serialization

Trollslayer16-Aug-05 1:26

Trollslayer

16-Aug-05 1:26

What are the data types for the member variables and if you open file were the contents saved as expected ?
Do a test with CString variables to make a test file if you are uncertain about what should happen when storing.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

Re: Problem with serialization

heavenode16-Aug-05 1:44

heavenode

16-Aug-05 1:44

Problem solved, there's nothing wrong with the code. actually i have another similar application, it's because the save-filetype (fdb) for both applications are the same, so when i save using the second application, the window uses my first application to open and resulting in 'unexpected file format'.

Re: Problem with serialization

Ravi Bhavnani16-Aug-05 4:34

Ravi Bhavnani

16-Aug-05 4:34

You may find this[^] series of articles interesting.

/ravi

My new year's resolution: 2048 x 1536
Home | Music | Articles | Freeware | Trips
ravib(at)ravib(dot)com

Terminate an exe from another exe ?

Amarelia15-Aug-05 23:40

Amarelia

15-Aug-05 23:40

Hello Friends

I have an application in which I need to start one exe from another one and at the end when the first one ends, it should automatically end the second one.

To start I use ShellExecute() or WinExec() function. And to terminate the another exe I put code into the destructor of the first one from where I have started it. But the problem is I don't know the Handle of the new exe that I have started using ShellExecute() or WinEec().....

Is there any functions which can give me the Handle of a perticular window or is there any other way to stop the application without knowing the handle or process id ?

Thankx in advance

My Code Looks Like :
-------------------
My first.exe file
================
MyClass()
{
// Do some work here........

WinExec("C:\\Temp\\second.exe",SW_SHOW);
// Do some work here...
};

~MyClass()
{
Here I want to kill(Terminate) the second.exe
}

Any help plz ?

Thankx
}

}

Amarelia Maehsh
Gujarat
India

Re: Terminate an exe from another exe ?

mark novak16-Aug-05 0:32

mark novak

16-Aug-05 0:32

You could use CreateProcess() and TerminateProcess(), however TerminateProcess() ends a program so abruptly that some applications don't handle it well, it doesn't give them time to save their settings or other exit code. I'd recommend using FindWindowEx() and sending a WM_CLOSE to the main window.

Re: Terminate an exe from another exe ?

Trollslayer16-Aug-05 1:27

Trollslayer

16-Aug-05 1:27

PostQuitMessage is another way.

The tigress is here Big Grin | :-D

Re: Terminate an exe from another exe ?

David Crow16-Aug-05 4:17

David Crow

16-Aug-05 4:17

Not a good idea if handling other messages during shutdown is a concern. Call PostMessage(WM_CLOSE) instead. PostQuitMessage() does not shut down an application properly as other messages might be initiated by the shutdown operation (e.g., save the document?) and those messages, along with any other messages that might be in the queue, will not be processed.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Re: Terminate an exe from another exe ?

Trollslayer16-Aug-05 7:56

Trollslayer

16-Aug-05 7:56

Thank you David, that's well worth knowing.

Elaine Rose | [Rose]

The tigress is here Big Grin | :-D

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