how to convert String to char* ?
by Ahsan Muzaheed · in Torque 3D Professional · 06/27/2013 (12:48 am) · 6 replies
here is my declarations:
problematic lines:
there are functions to convert char to string.(sourcecoreutilstr.h)
is there any function to convert string to char?
String previousMat=getMapEntry(textureName); char* t;
problematic lines:
strcpy(t,previousMat);//no error.but crash happens for access violation reading //char* newMat=(char*)previousMat;//error
there are functions to convert char to string.(sourcecoreutilstr.h)
is there any function to convert string to char?
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#2
You're using it on a container which also contains length, hash etc. That won't work. Change this:
To this:
And you're done! You won't need your "t" char variable.
06/27/2013 (6:53 am)
To expand on what Vince said: strpcy is intended for C-strings only.You're using it on a container which also contains length, hash etc. That won't work. Change this:
strcpy(t,previousMat);//no error.but crash happens for access violation reading //char* newMat=(char*)previousMat;//error
To this:
newMat = previousMat.c_str ();
And you're done! You won't need your "t" char variable.
#3
very much handy.
although what i was intended to do is concatenate three strings together.
that is why trying to use strCat() after using strcpy() .
but found these :
so fix was easy for me:
again thanks for yours time.
06/28/2013 (3:48 am)
thanks for the answers.very much handy.
although what i was intended to do is concatenate three strings together.
that is why trying to use strCat() after using strcpy() .
but found these :
String& operator+=(StringChar); String& operator=(const StringChar*); String& operator+=(const StringChar*);
so fix was easy for me:
String z=previousMat+" "+newMat; dStrcpy(newMat ,z);
again thanks for yours time.
#4
06/28/2013 (5:00 am)
Glad you got it working! 
#5
06/28/2013 (5:22 am)
Shouldn't that bedStrpy(newMat, z.c_str());The current line may work but I think you need the method call to be technically correct.
#6
06/28/2013 (6:18 pm)
I would generally agree until I looked at the String code and saw that the value is typedef'd to const char * anyways, so he should be fine without that. 
Torque Owner Vince Gee
WinterLeaf Entertainment
const char* blah = StringTable->insert("Blah");
String s = String(blah);
Con::warn(s.c_str()); (.c_str converts it back to a const char *)