Merry Christmas guys Got a problem ..... string s = "santa"; char *title = new char[ s.length() ]; s.copy( title, s.length() ); if (!CreateGLWindow(title,640,480,16,fullscreen)) the problem is the title of the window becomes santayyyy the y''s have 2 dots on top of them too!. they sometimes go away when i do char *title = new char[ s.length()-4 ]; anybdy....?thnx

I believe the source of your problem lies in the way you create your character array. You should set the array to "s.length()+1"

Strings in C/C++ need a null byte at the end of them, and so you need 1 extra byte of space for this character.

I hope this is the correct information.

Merry xmas!



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May I ask you: why are you typing so much code (and wasting CPU cycles) for getting a name into a char pointer? (or however you call those types )

  // Why don''t you do this?char title[256];sprintf(title,"santa");if (!CreateGLWindow(&title,640,480,16,fullscreen))  

quote: Original post by richardve

May I ask you: why are you typing so much code (and wasting CPU cycles) for getting a name into a char pointer? (or however you call those types )

The same applies to you, though... and you are mistakenly passing the address of a pointer to a character array as first argument...







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abt th reason why im typing so much..

that piece of code was just a test. I actually want to use the string template but since windows requires char* for some API calls, i was trying out the conversion from string to char*

thanz guys but still doesnt work
but abt the byte thing ... this works


string s = "santa";
char *title = new char[ s.length()-4 ];// ADDING -4 MAKES IT PRINT CORRECTLY
s.copy( title, s.length() );

if (!CreateGLWindow(title,640,480,16,fullscreen))




however even this fails at times depending upon the length of the string s
?ideas?

I beleive that the command s.length() is returning the number of characters in the string and not including the null terminator! so you'd have to put s.lenght()+1


Edited by - avianRR on December 24, 2000 11:57:02 PM

CreateGLWindow(s.c_str(),640,480,16,fullscreen)

I may be new to c++, but I think I know what you're looking for:

    string s = "santa"; char *title;title = (char *) malloc(sizeof(s));s.copy( title, s.length() );if (!CreateGLWindow(title,640,480,16,fullscreen))//try that//or//the always easier:char s[255] = "santa"; char *title;title = (char *) malloc(sizeof(s));strcpy( title, s); // you can substitute sprintf here too I thinkif (!CreateGLWindow(title,640,480,16,fullscreen))    

Hope that helps

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Edited by - skyfire360 on December 24, 2000 12:44:18 AM

quote:
Original post by karmalaa
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The same applies to you, though... and you are mistakenly passing the address of a pointer to a character array as first argument...

Hehe , that''s why I never code when it''s late.. too many bugs and typos!

RealityMonster:

AFAIK you should use templates to make it easier to code some things.
But you are making it harder