Programming Forums > Application Development > C++

ivan · Dec 6th, 2005, 4:16 PM

I am moving from C to C++ and came across a problem... I began to use the <string> header for string, and forgotten the old C-style strings.
But, a WIN32 API function called Create file

(Toggle Plain Text)

HANDLE CreateFile(

    LPCTSTR lpFileName,	// pointer to name of the file 
    DWORD dwDesiredAccess,	// access (read-write) mode 
    DWORD dwShareMode,	// share mode 
    LPSECURITY_ATTRIBUTES lpSecurityAttributes,	// pointer to security attributes 
    DWORD dwCreationDistribution,	// how to create 
    DWORD dwFlagsAndAttributes,	// file attributes 
    HANDLE hTemplateFile 	// handle to file with attributes to copy  
   );

in it's lpFileName argument accepts only char* type ( or win -> LPCTSTR ). I can not pass a string object to it. Any idea how I could quickly convert the string to char* ???

Any help is highly appreciated

Ooble · Dec 6th, 2005, 4:25 PM

(Toggle Plain Text)

std::string my_string = "Moo;";
char my_c_string[8];
my_c_string = my_string.c_str();

ivan · Dec 6th, 2005, 4:30 PM

thanx mate it works!!!

Dec 6th, 2005, 4:16 PM	#1
ivan Professional Programmer Join Date: Sep 2005 Location: serbia & montenegro Posts: 484 Rep Power: 4	*WIN32 API string to char Conversion problem** I am moving from C to C++ and came across a problem... I began to use the <string> header for string, and forgotten the old C-style strings. But, a WIN32 API function called Create file (Toggle Plain Text) HANDLE CreateFile( LPCTSTR lpFileName, // pointer to name of the file DWORD dwDesiredAccess, // access (read-write) mode DWORD dwShareMode, // share mode LPSECURITY_ATTRIBUTES lpSecurityAttributes, // pointer to security attributes DWORD dwCreationDistribution, // how to create DWORD dwFlagsAndAttributes, // file attributes HANDLE hTemplateFile // handle to file with attributes to copy ); HANDLE CreateFile( LPCTSTR lpFileName, // pointer to name of the file DWORD dwDesiredAccess, // access (read-write) mode DWORD dwShareMode, // share mode LPSECURITY_ATTRIBUTES lpSecurityAttributes, // pointer to security attributes DWORD dwCreationDistribution, // how to create DWORD dwFlagsAndAttributes, // file attributes HANDLE hTemplateFile // handle to file with attributes to copy ); in it's lpFileName argument accepts only char* type ( or win -> LPCTSTR ). I can not pass a string object to it. Any idea how I could quickly convert the string to char* ??? Any help is highly appreciated

Dec 6th, 2005, 4:25 PM	#2
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	(Toggle Plain Text) std::string my_string = "Moo;"; char my_c_string[8]; my_c_string = my_string.c_str(); std::string my_string = "Moo;"; char my_c_string[8]; my_c_string = my_string.c_str(); __________________ Me :: You :: Them

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Dec 6th, 2005, 4:30 PM	#3
ivan Professional Programmer Join Date: Sep 2005 Location: serbia & montenegro Posts: 484 Rep Power: 4	thanx mate it works!!!

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Programming Forums > Application Development > C++

WIN32 API string to char* Conversion problem