10 Getting Group Positions
Q3Group_GetPreviousPositionOfType
function to get the position of the previous object of a particular type in a group.
TQ3Status Q3Group_GetPrevious
PositionOfType ( TQ3GroupObject group, TQ3ObjectType isType, TQ3GroupPosition *position);group
A group.isType
An object type.position
On entry, a pointer to a valid group position. On exit, a pointer to the position in the specified group of the next object that follows the object in that position and that has the specified type.
Q3Group_GetPreviousPositionOfType
function returns, in the position
parameter, the position in the group specified by the group
parameter of the previous object that precedes the object having the position specified on entry in the position
parameter and that has the type specified by the isType
parameter. If the object specified on entry is the first object of that type in the group, Q3Group_GetNextPositionOfType
returns the value NULL
in the position
parameter. Note that the type of the object in the position specified by the position
parameter on entry to Q3Group_GetPreviousPositionOfType
does not have to be the same as the type specified by the isType
parameter.kQ3ErrorInvalidObject
kQ3ErrorInvalidPositionForGroup
kQ3ErrorNULLParameter
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