C / C++ / MFC

Razanust wrote:

why do we do curr = curr->next ;

int main() 
{
item *head,*prev,*curr;
int i;

for(i=0;i<3;i++)
{
  curr=(item *)malloc(sizeof(item));
  curr->val=i+1;

  if(i==0) head=curr;
  else     prev->next=curr;

  prev=curr;
}

curr->next=NULL;

......
}

Chris Meech wrote:

Changing the limit is one alternative. Another is to check the return value from PostMessage. If the queue is full and the message can not be posted, I believe PostMessage returns a boolean false to indicate failure. Just wanted to suggest another way of looking at the problem.

vc++_fragrance wrote:

1)How to handle the scenario... so that my application should not crash.

vc++_fragrance wrote:

2) How to find the size of the Message queue.

Adam Roderick J 09 wrote:

Change Allocation to Heap if scope of thread is unknown
pass the TCHAR*.
CString csTemp( "Sample data" );
LPTSTR lpszData = new TCHAR[csTemp.GetLength()+1];
_tcscpy(lpszData , csTemp)

Adam Roderick J 09 wrote:

LPTSTR lpszData = new TCHAR[csTemp.GetLength()+1];

Rajesh R Subramanian wrote:

Adam Roderick J 09 wrote:
LPTSTR lpszData = new TCHAR[csTemp.GetLength()+1];



That won't work as expected with Unicode strings.

CPallini wrote:

csTemp.GetLength()+1

Rajesh R Subramanian wrote:

Because of the +1 part, which makes a wrong assumption of the size of an Unicode character! It could have been multiplied by sizeof(TCHAR), that would make it work, but is not very clean (IMHO).

LPTSTR lpszData = new TCHAR[csTemp.GetLength()+1];

Rajesh R Subramanian wrote:

It could have been multiplied by sizeof(TCHAR)

UINT ThreadFunc(LPVOID p)
{
  CString *pStr = (CString*)p;
  //use pStr here
  //delete pStr if it should be.
  return FALSE;
}

CMyDlg::SpawnThread()
{
  CString *pSz = new CString(_T("Some value"));
  AfxBeginThread(ThreadFunc, pSz);
}