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Windows bug fix: Function CreateFile() requires an LPCWSTR string.

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The Windows function CreateFile() requires an LPCWSTR string for the
filename. STL's std::string().c_str() returns a simple const char* and
so compilation fails (using Visual Studio 2012 Express at least).

Fix by defining a function for the conversion. This function was taken
literally from StackOverflow:
http://stackoverflow.com/questions/27220/how-to-convert-stdstring-to-lpcwstr-in-c-unicode
This commit is contained in:
Nicolas Bigaouette 2013-07-30 12:17:55 -04:00
parent dca4bd163e
commit 07837271dd
1 changed files with 17 additions and 1 deletions
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18
src/impl/win.cc
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@ -16,6 +16,20 @@ using serial::PortNotOpenedException;
using serial::IOException;
// Convert std::string to LPCWSTR
// http://stackoverflow.com/questions/27220/how-to-convert-stdstring-to-lpcwstr-in-c-unicode
std::wstring s2ws(const std::string& s)
{
int len;
int slength = (int)s.length() + 1;
len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0);
wchar_t* buf = new wchar_t[len];
MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, buf, len);
std::wstring r(buf);
delete[] buf;
return r;
}
Serial::SerialImpl::SerialImpl (const string &port, unsigned long baudrate,
bytesize_t bytesize,
parity_t parity, stopbits_t stopbits,
@ -47,7 +61,9 @@ Serial::SerialImpl::open ()
throw SerialException ("Serial port already open.");
}
fd_ = CreateFile(port_.c_str(),
std::wstring stemp = s2ws(port_);
LPCWSTR lpFileName = stemp.c_str();
fd_ = CreateFile(lpFileName,
GENERIC_READ | GENERIC_WRITE,
0,
0,