You can tell windows to create these dmp's for you (starting from Windows Server 2008 and Windows Vista SP1). See MSDN for details: Collecting User-Mode Dumps[^]

I copy-pasted the OnSetValue1 function of a project of mine, and forgot to edit the class name, so CSurveyUpdateDlg::OnSetValue1 should be CThreadDlg::OnSetValue1 And don't forget to add the function prototype in the ThreadDlg.h header file too:

afx_msg LRESULT OnSetValue1(WPARAM wParam, LPARAM lParam);

The WMU_SETVALUE1 error is caused by a missing

#include "Thread.h"

in the file where you're calling PostMessage(WMU_SETVALUE1, ...) That should do it.

You can see I didn't test this ... :sigh: That should have been:

CWnd * pDlg = (CWnd*)lpParam;

If that doesn't work, I'll test it myself! :)

Try this: the thread function:

DWORD WINAPI ThreadFunc( LPVOID lpParam )
{
CWnd * pDlg = (pDlg*)lpParam;
int a = 44;
int b = 45;
for (int i=40; i<100; i++)
{
pDlg->PostMessage(WMU_SETVALUE1, (WPARAM)i,(LPARAM)b);
Sleep(10);
}
return 0;

}

in the dialog.h file

#define WMU_SETVALUE1 (WM_USER+1)

in the message map add following line:

ON\_MESSAGE(WMU\_SETVALUE1,OnSetValue1)

And add following function:

LRESULT CSurveyUpdateDlg::OnSetValue1(WPARAM wParam, LPARAM lParam)
{
setValueAlt1((int)wParam, (int)lParam);
}