Working with LPCWSTR
Alan Gamboa <[email protected]> Tue, 15 Oct 2002 13:14:26 -0400
| Newsgroups | gmane.comp.windows.devel.oledb.devel |
|---|---|
| Message-ID | <[email protected]> |
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I am so used to manipulating CString and char[] variables, I am having
problems working with LPCWSTR variables :)
in my accessor i have
MY_DEFINE_COMMAND_EX(CMyAccessor,L"SELECT blah, SUBSTRING(blah,1,1) FROM
tblBlah")
i have redefined DEFINE_COMMAND_EX as follows:
#define MY_DEFINE_COMMAND_EX(x, wszCommand) \
typedef x _CommandClass; \
static HRESULT GetDefaultCommand(LPCWSTR* ppwszCommand) throw () \
{ \
ParseString(wszCommand); \
*ppwszCommand = wszCommand; \
return S_OK; \
}
here is ParseString():
inline void ParseString(LPCWSTR wszCommand)
{
//what i want to do!
CString s = wszCommand;
s.Replace("SUBSTRING","SUBSTR");
wszCommand = s;
}
I know the syntax above isn't exactly correct. Besides, I stepped through it
and wszCommand does not come back out.
any direction is appreciated.
Alan Gamboa
CCG Systems, Inc.
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<TITLE>Working with LPCWSTR</TITLE>
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<P><FONT SIZE=3D2>I am so used to manipulating CString and char[] =
variables, I am having problems working with LPCWSTR variables =
:)</FONT>
</P>
<P><FONT SIZE=3D2>in my accessor i have</FONT>
</P>
<P><FONT SIZE=3D2>MY_DEFINE_COMMAND_EX(CMyAccessor,L"SELECT blah, =
SUBSTRING(blah,1,1) FROM tblBlah")</FONT>
</P>
<P><FONT SIZE=3D2>i have redefined DEFINE_COMMAND_EX as follows:</FONT>
</P>
<P><FONT SIZE=3D2>#define MY_DEFINE_COMMAND_EX(x, wszCommand) \</FONT>
<BR> <FONT SIZE=3D2>typedef x =
_CommandClass; \</FONT>
<BR> <FONT SIZE=3D2>static =
HRESULT GetDefaultCommand(LPCWSTR* ppwszCommand) throw () \</FONT>
<BR> <FONT SIZE=3D2>{ =
\</FONT>
<BR> =
<FONT =
SIZE=3D2>ParseString(wszCommand); \</FONT>
<BR> =
<FONT SIZE=3D2>*ppwszCommand =
=3D wszCommand; \</FONT>
<BR> =
<FONT SIZE=3D2>return S_OK; =
\</FONT>
<BR> <FONT SIZE=3D2>}</FONT>
</P>
<P><FONT SIZE=3D2>here is ParseString():</FONT>
</P>
<P><FONT SIZE=3D2>inline void ParseString(LPCWSTR wszCommand)</FONT>
<BR><FONT SIZE=3D2>{</FONT>
<BR> <FONT SIZE=3D2>//what i =
want to do!</FONT>
<BR> <FONT SIZE=3D2>CString s =
=3D wszCommand;</FONT>
<BR> <FONT =
SIZE=3D2>s.Replace("SUBSTRING","SUBSTR");</FONT>
<BR> <FONT =
SIZE=3D2>wszCommand =3D s;</FONT>
<BR><FONT SIZE=3D2>}</FONT>
</P>
<P><FONT SIZE=3D2>I know the syntax above isn't exactly correct. =
Besides, I stepped through it and wszCommand does not come back =
out.</FONT>
</P>
<P><FONT SIZE=3D2>any direction is appreciated.</FONT>
</P>
<P><FONT SIZE=3D2>Alan Gamboa</FONT>
<BR><FONT SIZE=3D2>CCG Systems, Inc.</FONT>
<BR> =20
</P>
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