how to close document handle

[VCsamir]

hi friends, i have have a MDI Application. when i close a document using onclosedocument. my document handle remains active though the members used in document are set to null. so i cannot check this condition if(doc) as it returns true. whereas in the if block it cannot access the members so app crashes eg.

if(doc) //handle =FAEX000
{
doc->getprivatevariable_or_functions(); // the application crashes here
}

thanking in anticipation REgards Samir

[Lost User]

When you close your document set the variable to NULL to indicate that it no longer exists.

I must get a clever new signature for 2011.