Thread: Binding a function argument

>I hope this is clear enough for people to work out what I mean.
Not really, but I get the feeling that a function object would be better suited to what you're trying to accomplish. You can also get a variable number of callbacks with a collection of handles (but please don't use varargs).

Unfortuanatly function objects wouldn't work as the program I'm plugin into won't accept them (it crashes). Maybe I should try to explain with some example code.

Example of my code

Code:

void func(char *text) {
  cout << text << endl;
}

functions funcArray[3];
funcArray[0] = func;
funcArray[1] = func;
funcArray[2] = func;

functions getFuncs ()
{
  return funcArray;
}

Example of the other programs code

Code:

/* When user clicks on a menu item */
  callable = getFuncs()[itemID];
  callable();

Obviously the above wouldn't work as no argument is being given to func. I can't tell which menu item triggered the function being called so I can't set a global variable.

Code:

void func(char *text) {
  cout << text << endl;
}
 
void func0(void)
{
   func("text0");
}
void func1(void)
{
   func("text1");
}
void func2(void)
{
   func("text2");
}
functions funcArray[3];
funcArray[0] = func0;
funcArray[1] = func1;
funcArray[2] = func2;
 
functions getFuncs ()
{
  return funcArray;
}
/* When user clicks on a menu item */
  funcArray[itemID]();