API CollapseTrainerSkillLine

Collapses a header, hiding all spells below it. CollapseTrainerSkillLine(id);

Arguments

 * id : Number - Index of the trainer service header to collapse (if the supplied index is not a header, an error is produced). Note that indices are affected by the trainer filter. (See GetTrainerServiceTypeFilter and SetTrainerServiceTypeFilter.)

Example
Collapses all trainer headers. local i, category; for i=1,GetNumTrainerServices do _, _, category = GetTrainerServiceInfo(i); if (category == nil) then break; -- GetNumTrainerServices does not check if you're talking to a trainer or not. end if (category == "header") then CollapseTrainerSkillLine(i); end end