CString to LPCTSTR conversion

Question

I have a CString variable that i a need to convert to LPCTSTR(const char*) .I need this conversion so that i can use it as an argument in a function .

The CString look like :

CString sqlTemp = _T("INSERT INTO "+ sw1 +" (filename, "+ sw2 +") VALUE ("+ sw7 +","+ sw3 +" ) ");

It contains an query. The prototype of the function is :

int WriteBlob(LPCTSTR szSqlStat, LPCTSTR szFilePath)

So could you show me an exemple of how to convert to LPCTSTR ? It may be trivial but i am a c++ beginner and i still get a hang of it.

Thanks .

please try this (LPCTSTR)(LPTSTR)sqlTemp to WriteBlog function — Riskhan, Sep 27 '12 at 11:58

Ionut Hulub · Accepted Answer · 2013-03-20T03:05:30.727

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One method of conversion is like this:

CString str;

str = "Hello";

LPCSTR szTemp = (LPCSTR)(LPCTSTR)str;

edited Mar 20 '13 at 03:05

answered Sep 27 '12 at 11:58

Ionut Hulub

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Can you also explain as to why there are so many different formats (LPCTSTR, CString, char*, string, etc...) which are all basically the same? Or is there some difference I just cannot see? – SinisterMJ Sep 27 '12 at 12:17
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fell string is an object so you can call methods on it unlike all the others. char* is basically an array of chars. Cstring is also an array of chars but they can take 2 bytes depending on the encoding. LPCTSTR is a pointer to a constant string, so you can't modify it. – Ionut Hulub Sep 27 '12 at 12:20
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" Cstring is also an array of chars" no, it's not. – Tamás Szelei Apr 15 '14 at 11:51
@TamásSzelei It does point at an LPSTR / LPWSTR though. – Ray Aug 01 '20 at 15:24

score 0 · Answer 2 · answered Aug 25 '15 at 07:26

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CString str; // the given string
CStringA strA(str); // a helper string
LPCSTR ptr = strA;

Reference MSDN

answered Aug 25 '15 at 07:26

JD-V

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CString to LPCTSTR conversion

2 Answers2

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