|
|
LAddRow |
||||
| Header: | Lists.h | Carbon status: | Supported | |
Adds one or more rows to a list.
SInt16 LAddRow (
SInt16 count,
SInt16 rowNum,
ListHandle lHandle
);
The number of rows to add.
The row number of the first row to add.
The list to add the rows to.
The row number of the first row added, which is equal to the value specified by the rowNum parameter if that value is a valid row number. If the row number specified by rowNum is not already in the list, then new last rows are added. The value returned by this function thus has significance only in this case.0
This function inserts rows starting at the row specified by the rowNum parameter. If there is insufficient memory in the heap to add the new rows, the function may fail to add the new rows although it returns a positive function result. Be sure there is enough memory in the heap to allocate the new rows before calling this function.
Rows whose row numbers are initially greater than rowNum have their row numbers increased by count.
If the automatic drawing mode is enabled and the rows added by this function are visible, then the list (including its scroll bars) is updated. New cells created by a call to this function are initially empty.
You may add rows to a list that does not yet have columns. The dataBounds field of the list record reflects that the list has rows, but you can only access cells when both rows and columns have been added.
This function is contained in a resource of resource type 'PACK'. Calling it could result in the loading of the package resource and the allocation of memory. Thus, your application should not call this function from within an interrupt, such as in a completion function or VBL task.
Supported in Carbon. Available in CarbonLib 1.0 and later when InterfaceLib 7.1 or later is installed. Exported by CarbonLib 1.0 and later and by InterfaceLib 7.1 and later.