hello
i have this MFC program that runs thou a large amount of data usually taking 1min- 6hr to process, during that time my MFC window freezes and i can not move it or set focus on it by clicking on it... the window does refresh but it has to be the upper most window...
is there any way to fix this.?
This is what i got so far
{
UpdateWindow() ; // refreshes the display but does not let me move the window or set focus on it
}
thank you for your help
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This can help you both to update your window and to stop the process when needed.
In your code whereever your function is entering data which is taking time to process.
Add a PeekMessage().
For example if your OnOK() is having all the code of data entry then do the following
int i = 0;
void CNetSendsDlg::OnOK()
{
// TODO: Add extra validation here
MSG message;
int j = 10;
UpdateData(TRUE);
j = m_NoOfTimes;
for (i = 0; i < j; i++)
{
//Your Data Entry
....
....
....
if(::PeekMessage(&message,
{
::TranslateMessage(&messag
::DispatchMessage(&message
}
}
CDialog::OnOK();
}
Try the following, nice easy thread using AfxBeginThread.
UINT MyThread( LPVOID pParam )
{
TRACE(_T("Start of thread\n"));
for( int iCount=0; iCount<10; iCount++ )
{
TRACE(_T("In thread\n"));
}
TRACE(_T("End of thread\n"));
return 0;
}
void CTestDlg::OnButton1()
{
TRACE(_T("Execute thread\n"));
AfxBeginThread( &MyThread, 0, THREAD_PRIORITY_NORMAL, 0, 0, NULL );
}
Create a thread like this:
Add a CWinThread member to your window class:
CWinThread *m_pWorkerThread; // Initialize it to NULL in the constructor
... and add a static member function:
static UINT Worker(LPVOID pParam);
Create a struct of data that should be accessible in both your window and your worker thread.
Something like this:
class CSharedData
{
public:
CWnd *m_pWnd; // pointer to the window
// a.s.o...
};
We need a CSharedData member variable in the window class:
CSharedData m_sharedData;
Now, call the thread like this:
if (m_pWorkerThread == NULL)
m_pWorkerThread = AfxBeginThread(&Worker, &m_sharedData); // don't remember the parameters
Inside CYourWindowClass::Worker(L
CSharedData *pSharedData = (CSharedData*)pParam;
Note that using threads requires synchronization calls. I suggest you take a look at Microsoft's sample called "ReCalc".
Regards,
Chris
Business Accounts
Answer for Membership
by: markschnPosted on 2003-08-06 at 15:01:55ID: 9095141
The problem is that your programm not pump the message map.
You can use a thread. You write a thread-methode where you place your
main routine.
So the window messages are handeled by the primary thread.
Second solution you pump the message-map.