Thread: Suggestions on this C style code

I want to make a global variable:

PHP Code:

char *str; 


Let's start by allocating some space:

PHP Code:

str = GloballAlloc(GPTR, 10); 


later pass some string:

PHP Code:

lstrcpy(str, "123"); 


let's say, later I want to make a bigger string

PHP Code:

lstrcpy(str, "somestringthatisbigger"); 


How can I implement GlobalReAlloc? Is there another way to re-alloc some variable for future smaller or bigger strings?