How to convert string into LPCWSTR

krishnampkkm · 06-15-2009, 04:08 AM

Hii

How can I convert string into LPCWSTR

Code:

 struct FILELIST  
 { 
 string path;
 vector<string> theList;
 };


string path
list<FILELIST>& theList

struct _finddatai64_t data; 
      string fname = path + "\\*.*";
      long h = _findfirsti64(fname.c_str(),&data);    //_findfirsti64(string,)



---------------
----------------
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//here I wanna convert string to LPCWSTR  ....

//using the LPCWSTR  I've to open the file using Createfile()

I've changed string to wstrig ,that time _findfirsti64() must have string argument...!!

any idea....

Thanking you..

Cactus_Hugger · 06-15-2009, 05:06 AM

1) Call CreateFileA().

2) Convert your string from whatever encoding it is in (presumably ASCII or UTF-8) to UTF-16. You can use MultiByteToWideChar() to accomplish this. Call it first with the last two arguments set to NULL and 0, respectively, and it will give you a buffer size. Allocate that buffer, call it again but passing the buffer, and you've got an LPWSTR. Then call CreateFileW(). Don't forget to free your memory.

**CornedBee** · 06-15-2009, 06:02 AM

Use a vector<WCHAR> if you convert yourself. But using CreateFileA is a better idea.

06-15-2009, 05:06 AM	#2
Cactus_Hugger int x = ((int ) NULL); Join Date: Jul 2003 Location: Banks of the River Styx Posts: 902	1) Call CreateFileA(). 2) Convert your string from whatever encoding it is in (presumably ASCII or UTF-8) to UTF-16. You can use MultiByteToWideChar() to accomplish this. Call it first with the last two arguments set to NULL and 0, respectively, and it will give you a buffer size. Allocate that buffer, call it again but passing the buffer, and you've got an LPWSTR. Then call CreateFileW(). Don't forget to free your memory. __________________ long time; /* know C? */ Unprecedented performance: Nothing ever ran this slow before. Any sufficiently advanced bug is indistinguishable from a feature. Real Programmers confuse Halloween and Christmas, because dec 25 == oct 31. The best way to accelerate an IBM is at 9.8 m/s/s. recursion (re - cur' - zhun) n. 1. (see recursion)
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06-15-2009, 06:02 AM	#3
CornedBee Cat without Hat Join Date: Apr 2003 Posts: 8,492	Use a vector<WCHAR> if you convert yourself. But using CreateFileA is a better idea. __________________ All the buzzt! CornedBee "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code." - Flon's Law
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