Legacy Document

Inside Macintosh: More Macintosh Toolbox /

Chapter 4 - List Manager / List Manager Reference

List Manager Routines / Accessing and Manipulating Cell Data

LClrCell

You can use the LClrCell procedure to clear the data contained in a cell.

PROCEDURE LClrCell (theCell: Cell; lHandle: ListHandle);

theCell

The coordinates of the cell to be cleared.

lHandle

The list containing the cell given in the theCell parameter.

DESCRIPTION

The LClrCell procedure clears the data contained in the cell specified by the theCell parameter.

If the cell coordinates specified by the theCell parameter are invalid, then the LClrCell procedure does nothing.

If the data of a visible cell is cleared and the automatic drawing mode is enabled, LClrCell updates the list.

SPECIAL CONSIDERATIONS

You should not call the LClrCell procedure from within an interrupt, such as in a completion routine or VBL task.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the LClrCell procedure are

Trap macro	Selector
_Pack0	$001C