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Revision as of 22:36, 11 April 2007

Contents 1 Definition 2 Returns 3 Parameters 4 Using Scrolling

Definition

start_scroll ( <number of scroll>, <file>, <graphic>, <background graphic>, <number of region>, <locking indicator> )

This creates a scroll window in which it will perform a view against a background graphic. That is, by using a graphic bigger than the display window, a part of this graphic can be shown and shifted in any direction.

Returns

Nothing

Parameters

Number of scroll - the id for the new scroll window, so it can be referenced to later

File - the fpg containing the scroll graphics

Graphic - the graphic code of the main graphic to be scrolled

Background graphic - the graphic code for the background of the scroll window (deeper than the main graphic)

Number of region - the region in which to put the scroll window

Locking indicator - A value defining whether each of the two scroll planes is horizontally and vertically cyclical

   + 1 - If the foreground is horizontally cyclical.
   + 2 - If the foreground is vertically cyclical.
   + 4 - If the background is horizontally cyclical.
   + 8 - If the background is vertically cyclical.

Using Scrolling

For each process that you want to be part of a scroll window, you must set the variable c_type to value 'c_scroll'. Additionally, you must set the camera property of the scroll structure to the identifying code of the process you wish to be followed.