C / C++ / MFC

<small>//------global data------</small><br />
HANDLE hthread; <small>// this is thread handle</small><br />
int idThread;   <small>// this is threaed id</small><br />
//---The thread function------------------------<br />
DWORD WINAPI UpdateThread(LPVOID lpParameter)<br />
{<br />
while(1) <small>//keep looping</small><br />
{<br />
<small>//WRITE YOUR UPDATING CODE HERE THAT WILL CONTINIOUSLY UPDATE THE VALUES<br />
//Make the values to be updated GLOBAL as there is no way to return values from a thread.</small><br />
}<br />
}

OnUpdateButtonClick()<br />
{<br />
<small>//when update button is clicked, start the update thread should be started</small><br />
hThread=CreateThread(NULL,0,UpdateThread,0,0,&idThread);<br />
<small>//dont bother about the parameters that are NULL or 0, u ll never need them</small><br />
}

OnStopButtonClick()<br />
{<br />
 <small>//We sud stop the thread now (i.e. stop the updating loop inside the thread)</small><br />
 TerminateThread(hThread,0)<br />
 <small>//WRITE HERE "UR CODE TO WRITE UPDATED VALUES INTO THE DATABASE"</small>}<br />
}

CWinApp::OnIdle()<br />
{<br />
 if(glo==0)<br />
 ; //do nothing<br />
 else if(glo==1)<br />
 {<br />
 //write all ur updating stuff here<br />
 }<br />
}

OnUpdateClick()<br />
{<br />
 glo=1;<br />
}

OnStopClick()<br />
{<br />
 glo=0;<br />
<br />
//NOW WRITE UPDATED VALUES TO DATABASE<br />
}

<br />
//global variables<br />
int check_exit=0;<br />
<br />
//Update button function<br />
void CUpdateView::OnUpdatedb() <br />
{<br />
	// TODO: Add your control notification handler code here<br />
<br />
	//get a pointer to the recordset<br />
		CUpdateDoc* pDoc = GetDocument();<br />
		UseRecordset* pUseRecordset	= &pDoc->m_UseRecordset;<br />
	int x = 5;<br />
	do<br />
	{<br />
		pUseRecordset->Edit();<br />
<br />
		//UpdateData(true);	<br />
		pUseRecordset->m_propatime = m_propagation*x;<br />
	<br />
		pUseRecordset->Update();<br />
<br />
		if (check_exit = 0)<br />
			check_exit=1;	<br />
	}while(check_exit!=1);<br />
<br />
	//::MessageBox(0, "Updated!", "Information",0);<br />
}<br />
<br />
//Exit button function<br />
void CUpdateView::OnExit() <br />
{<br />
	check_exit = 0;<br />
}

int loop=1; //1 means keep looping 0 means stop and end the thread
DWORD WINAPI UpdateThread(LPVOID lpParameter)
{
//get a pointer to the recordset
CUpdateDoc* pDoc = GetDocument();
UseRecordset* pUseRecordset = &pDoc->m_UseRecordset;
int x = 5;

while(loop==1)
{
pUseRecordset->Edit();

//UpdateData(true); 
pUseRecordset->m_propatime = m_propagation*x;

pUseRecordset->Update();
}
}

//------global data------
HANDLE hthread; // this is thread handle
int idThread; // this is threaed id

//Update button function
void CUpdateView::OnUpdatedb() 
{
// TODO: Add your control notification handler code here

// in place of "UpdateThread" use whatever you have named the thread
hThread=CreateThread(NULL,0,UpdateThread,0,0,&idThread); 
}

//Exit button function
void CUpdateView::OnExit() 
{
loop = 0;
}