Robert Clipsham Wrote:
> On 11/04/10 15:41, Nrgyzer wrote:
> > I want to do the following:
> >
> > struct MyStruct {
> >
> > char[] structName;
> >
> > public char[] toString() {
> >
> > return structName;
> >
> > }
> >
> > }
> >
> > ...
> >
> > class MyClass {
> >
> > private static void function(void*) callBack;
> > private static void* callBackValue;
> > ...
> > static this() {
> > MyStruct test = MyStruct();
> > test.structName = "Struct name";
> > callBack =&cb;
> > callBackValue =&test;
> > }
> > ...
> > public void cb(void* value) {
> >
> > MyStruct temp = *((cast(MyStruct*) value));
> > writefln(temp);
> >
> > }
> >
> > }
>
> Why the need for void* everywhere? Surely you could save the effort and
> store it as a MyStruct?
Because I call MyClass.cb by using an other class... for example the
Button-Class.
struct MyStruct {
char[] structName;
public char[] toString() {
return structName;
}
}
...
class MyClass {
public static Button[] loadButtons() {
Button[] buttons;
for (int i=0; i < 10; i++) {
MyStruct curStruct = MyStruct();
curStruct.structName = .toString(i);
buttons ~= new Button(cb, curStruct);
}
return buttons;
}
public static void cb(void* value) {
MyStruct temp = *((cast(MyStruct*) value));
writefln(temp);
}
}
class Button {
private static void function(void*) callBack;
private static void* callBackValue;
this(void function(void*) cB, void* cbValue) {
callBack = cB;
callBackValue = cbValue;
}
public void pressButton() {
// This should call MyClass.cb
callBack(callBackValue);
}
}
For example... I click on a button on my OpenGL-gui, then I simply call the
pressButton-method in my class Button which should call MyClass.cb with
callBackValue which can be a value, class, struct or a similar datatype. To
store different values/classes/structs... I cast all to a void-pointer. In this
case I can use the Button-class in multiple situations.
