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Start scroll
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[edit] Definition
INT Start_scroll ( <INT scrollnumber> , <INT fileID> , <INT graphID> , <INT backgroundgraphID> , <INT regionnumber> , <INT lockindicator> )
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. After this function, the use of the struct scroll makes sense.
[edit] Parameters
| INT scrollnumber | - The ID for the new scroll window, so it can be referenced to later |
| INT fileID | - The fileID of the file containing the scroll graphics |
| INT graphID | - The graphID of the graphic of the main graphic to be scrolled |
| INT backgroundgraphID | - The graphID of the graphic for the background of the scroll window |
| INT regionnumber | - The region in which to put the scroll window |
| INT lockindicator | - A bit flag defining whether each of the two scroll planes is horizontally/vertically cyclical |
[edit] Returns
INT : true
[edit] Notes
The locking indicator can be combinations of the following flags:
| 1 | - The foreground will be displayed horizontally cyclical |
| 2 | - The foreground will be displayed vertically cyclical |
| 4 | - The background will be displayed horizontally cyclical |
| 8 | - The background will be displayed vertically cyclical |
Combine them using the bitwise OR operator.
[edit] Using Scrolling
For each process that you want to be part of a scroll window, you must set the local variable ctype to value C_SCROLL. It should also be noted that the local variable c_number is used for selecting in which scroll a process should be displayed. Additionally, you must set the camera property of the scroll structure to the processID of the process you wish to be followed.
[edit] Finish Scrolling
Use function Stop_scroll
