Use CString::Format with %x or %X Tomasz Sowinski -- http://www.shooltz.com Never argue with an idiot, he'll bring you to his level and beat you with experience.

what exactly i want is, to read the elemnts from the headposition in Clist and immediately after reading,would like to delete the already read element from the list & also release the memory that was associated with the deleted element. Can anybody pls. elaborate on this The code is as follows void CPLayerApp::LockIt() { unsigned char data[10],mCnt,mMid; unsigned char *ptr; CMessage* pMess; CMessage* delMess; CSingleLock singleLock(&m_SyncLock.m_mutex); CString str=""; while(1) { if(m_messList.GetCount() != 0) { singleLock.Lock(); pMess = &m_messList.GetAt(m_messList.GetHeadPosition()); mCnt = pMess->m_cnt; mMid = pMess->m_mid; pMess->GetData(data); //POSITION pos = m_messList.GetHeadPosition(); m_messList.RemoveHead(); delMess= &m_messList.RemoveHead(); //pMess=(CMessage*)m_messList.RemoveHead(); delete delMess; singleLock.Unlock(); if(data[0] == 0x10) { str.Format("%0x",data[0]); AfxMessageBox(str); break; } } Sleep(200); }:( Rsh

The technical reason is that a critical section doesn't require a switch to kernel mode unless a second thread is trying to lock it when another already has the lock. A mutex will always cause a kernel mode switch. Tim Smith I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Have you tried running in Safe Mode ? Venet. -------- Black holes are where God divided by zero.(Steven Wright)

Pretyy cool one Thanx Alexandru Rsh

As an aside, it would make your life a lot easier if you use STL for your collection classes inside of the MFC collection junk.