C++ class problem

ikoonman

Hi

I am experiencing a problem in a class that I've written and I am not sure why I am getting it. The class is supposed to load the library when it's instantiated and not again until the next reload of the class.

I wrote a simple class to load an API library which is as follow:

Class

class MyClass
{
public:
  void LoadLibrary();
private:
  BOOL bLibLoaded;
}

Constructor:

MyClass::MyClass() { bLibLoaded = FALSE; }

Function:

void MyClass::LoadLibrary()
{
  HMODULE hModule;

   if (bLibLoaded == FALSE)
  {
    hModule = LoadLibrary("mymodule.dll");

    bLibLoaded = TRUE;
  }
}

The problem is that I get an unhandled exception on the IF when it tests whether bLibLoaded is TRUE. I don't understand it. Initially I moved the hModule var declaration into the public/private sections of the class definition but it still doesn't want to work. If I remove the IF the code runs ok.

This is the error message:

First-chance exception in testclient.exe (BOCL.DLL): 0xC0000005: Access Violation.

Naturally there is other code embedded aswell but I cannot see that that would effect this specific function.

Any ideas?

ressem

Any more information in the stack trace?

If you drop in more statements before 'bLibLoaded = TRUE;' does the error still occur.

E.g. if you add in a typical bit of code, following the LoadLibrary

if (null== hModule){
//Log Error
// return/exit/whatever
}
else {
bLibLoaded = TRUE;
}

does the exception occur elsewhere, or the same line.