From: Jeff Mitchell <quixoticsycophant@...>
Date: 2004-07-02T14:31:31+09:00
Subject: Re: curious behavior with StringValuePtr()

--- Daniel Berger <djberg96@hotmail.com> wrote:
> 
> lpSourceName = (LPCTSTR)StringValuePtr(rb_iv_get(self,"@source"));
> 
> I get this error:
> 
> eventlog.c(554) : error C2102: '&' requires l-value
> eventlog.c(554) : error C2198: 'rb_string_value_ptr' : too few actual
> parameters

I had the same experience.  Unfortunately StringValue*() is not a
direct replacement for STR2CSTR, as it takes the address of the
parameter,

#define StringValue(v) rb_string_value(&(v))
#define StringValuePtr(v) rb_string_value_ptr(&(v))
#define StringValueCStr(v) rb_string_value_cstr(&(v))

My solution was

VALUE tmp = rb_iv_get(self,"@source");
lpSourceName = (LPCTSTR)StringValuePtr(tmp);




		
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