In a c-ish language, I was instantiating a MSScriptControl.ScriptControl object and using the .AddCode method to run VBScript, which in turn, instantiated the CDO.Message object.
However, every time I got to the
"objMsg.HTMLBody = \"" + email_body + "\" \n"
(note this was in the c, the VBScript would be:
objMsg.HTMLBody = email_body
line of the code, I got an error
Microsoft VBScript compilation error : Unterminated string constant
Eventually, I found the problem was that the variable email_body contained character 10 (\n) in it (several places), which was interpreted in VBScript as the end of a line of code (but before a close-quote), which is a syntax error.
I can't imagine I'm the only person to miss this, so I'm writing a little 'knowledge base' here.
Resolution:
In the parent-language (in this case, a weird form of c called hsl), use a string-replace method to replace all inctances of \n with <br> and it works just fine now, such as:
StrReplace(email_body, "\n", "<br>"
then call the ScriptControl.AddCode( ... ); method.