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X-Hacker.org- Force 4.0 Reference - chartoptr() poke a string into a memory address http://www.X-Hacker.org [<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]
 chartoptr()         Poke a string into a memory address
------------------------------------------------------------------------------
 Declaration
   memory.hdr

 Syntax
   proc chartoptr extern
   param const char     cVar, ;
         value _POINTER pMem

 Arguments
   cValue is the value to place in memory.
   pMem is the target address.

 Return
   None.

 Description
   This procedure copies a string into the specified memory location.

   The procedure is included for compatibility with earlier Force versions.
   Use the ptr() data type in conjunction with the & and * operators for
   directly writing to explicit memory addresses.

 Example
   #define EXAMPLE_MEMORY
   #include example.hdr

   proc Test_chartoptr
   vardef
      ptr( char ) pMem        // pointer
   enddef
   pMem := malloc( 1000 )     // allocate working space
   ? *pMem                    // prints accidental value
   chartoptr( "hello", pMem ) // write a char to memory via function call
   ? *pMem                    // prints "hello"
   *pMem := "world"           // write a char to memory via pointer
   ? *pMem                    // prints "world"
   free( pMem )               // free allocation
   endproc

   proc main
   Test_chartoptr()
   endproc

See Also: calloc() chartosegoff() malloc()

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