Declared attribute without a local implementation in AROS Scrollgroup.

BOOL; header declares initialize, set and get.

No constructor, setter, getter or layout branch consumes this attribute.

In-content bar visibility is automatically selected by the private

layout hook regardless of this value. Group fallback to child getters

does not establish local support. No working default or state should be

inferred from the declaration.

Supply the virtual content tree to be adopted by the internal Group.

Object pointer; initialize and get. Required non-NULL, unowned

Virtgroup-compatible object.

The getter returns the same borrowed object. Do not dispose or detach it

independently while Scrollgroup uses it. There is no local setter or

replacement mechanism. A NULL child makes nested Group construction

fail, but nested allocations and ownership on failure are not

comprehensively unwound. Use actual virtual Group semantics, including

private content-minimum getters.

Declared attribute without a local implementation in AROS Scrollgroup.

BOOL; header declares initialize only.

No constructor, setter, getter or layout branch consumes this attribute.

This value does not constrain the content axis; layout uses actual

content min/max information. Group fallback to child getters does not

establish local support. No working default or state should be inferred

from the declaration.

Declared attribute without a local implementation in AROS Scrollgroup.

BOOL; header declares initialize only.

No constructor, setter, getter or layout branch consumes this attribute.

This value does not constrain the content axis; layout uses actual

content min/max information. Group fallback to child getters does not

establish local support. No working default or state should be inferred

from the declaration.

Return the internally created horizontal Scrollbar object.

Object pointer; get only.

The returned object is borrowed and owned through the internal Group.

Use its Prop attributes for range/position; synchronization

notifications are already installed. Do not dispose or remove it

independently. This is a Scrollbar object, not the raw Intuition

proportional gadget. No local setter exists.

Declared attribute without a local implementation in AROS Scrollgroup.

BOOL; header declares initialize, set and get.

No constructor, setter, getter or layout branch consumes this attribute.

In-content bar visibility is automatically selected by the private

layout hook regardless of this value. Group fallback to child getters

does not establish local support. No working default or state should be

inferred from the declaration.

Declared attribute without a local implementation in AROS Scrollgroup.

BOOL; header declares initialize, set and get.

No constructor, setter, getter or layout branch consumes this attribute.

In-content bar visibility is automatically selected by the private

layout hook regardless of this value. Group fallback to child getters

does not establish local support. No working default or state should be

inferred from the declaration.

Choose bottom and right window-border scrolling when nonzero.

BOOL; initialize only. Default FALSE.

The constructor passes Prop_UseWinBorder_Bottom/Right to its bars. In

this mode the layout uses the full available content rectangle and does

not perform automatic in-content bar placement. Configure the enclosing

window with Window_UseBottomBorderScroller and

Window_UseRightBorderScroller to provide the matching gadgets. There is

no local getter or runtime switch; the corner button is still

constructed but is not explicitly laid out by this branch.

Return the internally created vertical Scrollbar object.

Object pointer; get only.

The returned object is borrowed and owned through the internal Group.

Use its Prop attributes for range/position; synchronization

notifications are already installed. Do not dispose or remove it

independently. This is a Scrollbar object, not the raw Intuition

proportional gadget. No local setter exists.

Group.mui

Wrap virtual contents with horizontal and vertical Scrollbar objects and

a corner Scrollbutton. Supply a live, unowned Virtgroup-compatible

Contents object. The constructor creates an internal Group with a

private layout hook and adopts contents and controls into it; the outer

Scrollgroup owns that Group. Returned Contents/HorizBar/VertBar pointers

are borrowed.

The layout hook is allocated separately and owned by Scrollgroup.

Dispose frees it before Group disposes children. End active Show/Setup

resources before disposal. Construction returns NULL on hook or

superclass construction failure. Nested constructor failures do not

provide a comprehensive ownership-unwind guarantee; do not assume every

unattached temporary is freed.

The private layout hook computes constraints and allocates viewport

space, showing only the required in-content bars. A corner button is

shown when both bars are needed. No notification wiring from that button

to the scroll offsets is installed here, so its presence does not

establish working two-axis drag scrolling.

Show reads content Left/Top/Width/Height, writes each bar's

Prop_First/Entries/Visible from offsets, content extents and inner

viewport dimensions, then returns Group Show's result. Getter/setter

results during synchronization are ignored. Range synchronization is

performed by this Show override, not by the private layout hook itself.

Notifications connect bar Prop_First changes to content offsets, and

content offset changes back to the bars. The callback uses NoNotify on

destination updates to prevent feedback. Bar-to-content writes also

disable Group child forwarding. Registration results are ignored.

UseWinBorder selects existing bottom/right window proportional gadgets

instead of laying bars beside the content. Those gadgets must be

supplied by the enclosing window; this class does not request window

border scrollers itself.

AutoBars, FreeHoriz, FreeVert, NoHorizBar and NoVertBar are declared but

not implemented. Adding unrelated children or replacing the internal

layout hook does not extend the fixed-child layout algorithm. Retain the

constructed tree and internal callback targets throughout its lifetime.

When adding a vertical bar, the second horizontal extent clamp uses

virt_maxheight rather than virt_maxwidth. Bar selection can therefore be

wrong for differing width/height limits. Min/max calculations reserve

both bar minima even when a bar will be hidden. Arithmetic includes

unchecked WORD intermediates. The layout hook ignores child layout

results; Group ignores the hook return value.

Content reads use the get macro with LONG destinations. Its GNU C

implementation uses a temporary union; the non-GNU fallback casts the

destination to an IPTR pointer. Do not assume identical width handling

on all compiler/ABI combinations. Contents must implement the expected

virtual getters and lifecycle; unsupported content types are not

validated.