Solved

converting between different type of strings

Posted on 2014-10-15
3
170 Views
Last Modified: 2014-10-15
In one place I want to get the file path of the program as a std::string, so I use this function:

      char path[MAX_PATH];
      GetModuleFileName(NULL, path, MAX_PATH);

However the GetModuleFileName function will not take the path variable. It says "argument of type char * in incompatible with with parameter of type LPSWSTR

What's the right way to do this?
0
Comment
Question by:rustycp
  • 2
3 Comments
 
LVL 86

Accepted Solution

by:
jkr earned 500 total points
ID: 40382724
Either set your project to use MBCS instead of UNICODE (ALT+F7 to open your project's properties, locate 'Use character set' in the 'General' category) or use UNICODE arrays, e.g.

      wchar_t path[MAX_PATH];
      GetModuleFileName(NULL, path, MAX_PATH);
      // Note: you will need a std::wstring now

Open in new window


The 3rd alternative is TCHARs, which is a layer of types and functions that VC++ uses to map between MBCS and UNICODE, i.e.

#include <tchar.h>

// ...

      TCHAR path[MAX_PATH];
      GetModuleFileName(NULL, path, MAX_PATH);

Open in new window



See also http://www.codeproject.com/Articles/76252/What-are-TCHAR-WCHAR-LPSTR-LPWSTR-LPCTSTR-etc and http://msdn.microsoft.com/en-us/library/bb415628.aspx ("TCHAR") regarding the latter.
0
 
LVL 2

Author Comment

by:rustycp
ID: 40382740
perfect thank you!
0
 
LVL 86

Expert Comment

by:jkr
ID: 40382761
You're welcome ;o)

As a side not, if you really want to convert between ANSI and UNICODE, see http://msdn.microsoft.com/en-us/library/5d7tc9zw.aspx ("wcstombs") and http://msdn.microsoft.com/en-us/library/k1f9b8cy.aspx ("mbstowcs")
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Templates For Beginners Or How To Encourage The Compiler To Work For You Introduction This tutorial is targeted at the reader who is, perhaps, familiar with the basics of C++ but would prefer a little slower introduction to the more ad…
Written by John Humphreys C++ Threading and the POSIX Library This article will cover the basic information that you need to know in order to make use of the POSIX threading library available for C and C++ on UNIX and most Linux systems.   [s…
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

863 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

27 Experts available now in Live!

Get 1:1 Help Now