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target_anchorhint(3) Arcan Lua API target_anchorhint(3) NAME target_anchorhint - Inform a target about its coordinates relative to a reference SYNOPSIS nil target_anchorhint( vid:tgt, int:type=ANCHORHINT_SEGMENT, int:parent, int:x, int:y, int:z ) target_anchorhint( vid:tgt, int:type=ANCHORHINT_EXTERNAL, int:parent, int:x, int:y, int:z ) target_anchorhint( vid:tgt, int:type=ANCHORHINT_PROXY, vid:src, int:parent, int:x, int:y, int:z ) target_anchorhint( vid:tgt, int:type=ANCHORHINT_PROXY_EXTERNAL, int:src, int:parent, int:x, int:y, int:z ) DESCRIPTION While target_displayhint can be used to provide additional information about how a client will be presented, it does not carry information about how it will be positioned within some reference frame. This is not as use- ful since clients can already hint in the other direction through viewport events. The major exceptions are when one client is bridging to other windowing systems ( ANCHORHINT_PROXY , ANCHORHINT_PROXY_EXTERNAL ), acting as a win- dow manager for nested/embedded subsegments ( ANCHORHINT_SEGMENT ) or as an out-of-process external window manager ( ANCHORHINT_PROXY ). *x* and *y* refers to the resolved upper-left corner position of the target, and *z* the stacking or composition order. In such cases target_anchorhint can be used. The type indicates which ref- erence objects that could be provided. If the type contains EXTERNAL the src and parent arguments will be treated as an opaque externally provided identifier, as with target_displayhint and received through the seg- ment_request and viewport events. The non-external types will have src and parent verified as valid frame- servers and the VID s substitued for the respective cookie identifier (see launch_target ). If no parenting relationship is required, use the global WORLDID as reference. Pointing to an invalid VID is a terminal state transition. SEE ALSO: target_displayhint(3) launch_target(3) targetcontrol August 2026 target_anchorhint(3)
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