Returns true if the value has changed.

Must be called every frame before any UI draws happen TODO - This is hard to remember to do.

Returns the cursor rect and the anchor vector for the tooltip.

returns (Clicked, hovered, isdragging, dropSlot).

func SetDragItemStyle(style Style) { gStyle.dragItemStyle = style }.

Returns true if we dropped the drag Item to this drag slot location.

Clicked, Dropped.

TODO: 1.

Returns the rectangular bounds of the drawn text.

Returns true if the mouse is captured by a group.

Returns the mouse position with respect to the group camera.

TODO: I kind of feel like the string needs to be in here, I'm not sure though.

TODO: You could potententially do an ID stack system: https://github.com/ocornut/imgui/blob/master/docs/FAQ.md#q-about-the-id-stack-system.

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Percent of parent.

SizeNone SizeType = iota.

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