CString Appending getting CMemoryExcepton

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Hi All,

I am getting Memory Exception when appending a Long String to CString many times.

C++

try
{
    for(int i=0;i<100; i++)
    {
        ..
        ..
        ..
        pQueryInfo->m_strQueryText += strQueryText; // Appending String --> MemoryException.
     }
} catch (CMemoryException *e){
e->Delete();
}

pQueryInfo->m_strQueryText and strQueryText are CString Variables.After appending a Long String many times i am getting this CMemoryException. How can it be
resolved. Help me out.

Thanks
Uday

Posted 23-Oct-13 19:17pm

janaswamy uday

Updated 23-Oct-13 20:20pm

nv3

v2

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Bernhard Hiller 24-Oct-13 2:07am

Duplicate of http://www.codeproject.com/Questions/673086/CString-Appending-getting-CMemoryExcepton

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Ghosuwa Wogomon · Answer 1 · 2013-10-23T19:28:00

There isn't enough information here to solve this problem, but I'll toss you a checklist.

1. Is your CString initialized properly with a constructor? A static declaration like:

CString cs = "This is a string."

Could throw an error when using an assignment operator like +=

2. Is your CString created outside the scope of the for loop? If not, your case statement might be reached before the string is initialized and Delete() would be called on a null object.

3. Is your query text initialized properly as well? If not, it could be pointing to some random trash in memory that might cause a memory exception.