Inside Macintosh: More Macintosh Toolbox /

Chapter 4 - List Manager / List Manager Reference

List Manager Routines / Modifying a List's Appearance

LDraw

You can use the LDraw procedure to draw a cell in a list. Ordinarily, you should only need to use LDraw when the automatic drawing mode has been disabled.

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

theCell

The cell to draw.

lHandle

The list containing the cell identified by the parameter theCell.

DESCRIPTION

The LDraw procedure draws the cell specified by the parameter theCell. The List Manager makes the list's graphics port the current port, sets the clipping region to the cell's rectangle, and calls the list definition procedure to draw the cell. It restores the clipping region and port before exiting.

SPECIAL CONSIDERATIONS

You should not call the LDraw 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 LDraw procedure are

Trap macro	Selector
_Pack0	$0030