Managed String To LPCSTR

[Bragadiru]

I want to read from an ini file :
System::String* windowsFolder = System::Environ ment::SystemDir ectory;

System::String* iniFile = System::IO::Pat h::Combine(wind owsFolder,
"My.ini");

char Class[200];

LPCTSTR lstr = 0;

lstr = static_cast<LPC TSTR>(const_cas t<void*>(static _cast<const
void*>(Marshal: :StringToHGloba lAuto(iniFile)) ));

// I took this cast from MSDN->Managed Extensions for C++ Migration
Guide->Appendix: Sample Code

// iniFile is good = "C:\winnt\syste m32\My.ini", BUT lstr is only "C" ?!!!!

GetPrivateProfi leString("Secti on", "Key", "", Class, 199, lstr);

Please help.

Thanks

[Tomas Restrepo \(MVP\)]

Bragadiru,

I want to read from an ini file :
System::String* windowsFolder = System::Environ ment::SystemDir ectory;

System::String* iniFile = System::IO::Pat h::Combine(wind owsFolder,
"My.ini");

char Class[200];

LPCTSTR lstr = 0;

lstr = static_cast<LPC TSTR>(const_cas t<void*>(static _cast<const
void*>(Marshal: :StringToHGloba lAuto(iniFile)) ));

// I took this cast from MSDN->Managed Extensions for C++ Migration
Guide->Appendix: Sample Code

// iniFile is good = "C:\winnt\syste m32\My.ini", BUT lstr is only "C"

?!!!!

That's because in your use of StringToHGlobal Auto(), you're converting to a
wide char string, and storing the result in an ansi one (I bet you're not
compiling with UNICODE/_UNICODE defined).

Instead, use explicitly Marshal::String ToHGlobalAnsi() or STHGUni() as
necessary.
--
Tomas Restrepo
to****@mvps.org

[Bragadiru]

It works. Thank you.

"Tomas Restrepo (MVP)" <to****@mvps.or g> wrote in message
news:um******** ********@TK2MSF TNGP09.phx.gbl. ..

Bragadiru,

I want to read from an ini file :
System::String* windowsFolder = System::Environ ment::SystemDir ectory;

System::String* iniFile = System::IO::Pat h::Combine(wind owsFolder,
"My.ini");

char Class[200];

LPCTSTR lstr = 0;

lstr = static_cast<LPC TSTR>(const_cas t<void*>(static _cast<const
void*>(Marshal: :StringToHGloba lAuto(iniFile)) ));

// I took this cast from MSDN->Managed Extensions for C++ Migration
Guide->Appendix: Sample Code

// iniFile is good = "C:\winnt\syste m32\My.ini", BUT lstr is only "C" ?!!!!

That's because in your use of StringToHGlobal Auto(), you're converting to

a wide char string, and storing the result in an ansi one (I bet you're not
compiling with UNICODE/_UNICODE defined).

Instead, use explicitly Marshal::String ToHGlobalAnsi() or STHGUni() as
necessary.
--
Tomas Restrepo
to****@mvps.org