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widgets allocation - if not on the heap then - where? [message #397]

Mon, 12 December 2005 16:14

fudadmin
Messages: 1321
Registered: November 2005
Location: Kaunas, Lithuania

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widgets allocation - if not on the heap then - where?

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[Updated on: Mon, 12 December 2005 16:34]

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Re: widgets allocation - if not on the heap then - where? [message #399 is a reply to message #397]

Mon, 12 December 2005 16:41

fudadmin
Messages: 1321
Registered: November 2005
Location: Kaunas, Lithuania

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also from U++ Home page:

Quote:

The most important is that Ultimate++ does not require widget objects to be allocated on the heap.

Quote:

GUI toolkit just references them, it neither creates them nor destroys them.

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Re: widgets allocation - if not on the heap then - where? [message #402 is a reply to message #399]

Mon, 12 December 2005 17:18

mirek
Messages: 13975
Registered: November 2005

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fudadmin wrote on Mon, 12 December 2005 10:41

also from U++ Home page:

Quote:

The most important is that Ultimate++ does not require widget objects to be allocated on the heap.

Quote:

GUI toolkit just references them, it neither creates them nor destroys them.

Well, it is a bit more complicated. In fact, "internals" of widgets often reside on the heap. It is the same as this situation:

{
std::string alfa;
alfa = "Something";
}

now, where is alfa located? alfa itself in in the stack, but it might allocate some heap storage.

More complicated

struct Foo {
std::string alfa;
};

What is important is that U++ does not require you to have

struct Dialog {
Button *ok;

Dialog() { ok = new Button; }
};

This of course requires GUI just referencing thing, not deleting them....

Now you are the talented writer to describe this better Smile

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