| LeftEdge |
indicates the left boundary of the list. |
| TopEdge |
indicates the top boundary of the list. |
| Width |
indicates the width of the list. |
| Height |
indicates the height of the list. |
| ItemHeight |
specifies how tall each item is. This is divided into Height
to determine how many items are displayed at once. |
| ScrollID |
This is the GadgetID number you would like the scroll bar to
have. A scroll gagdget will be created with this number in
in its GadgeID field. Later, when your Program receives
GADGETUP events with this GadgetID, call ScrollList to scroll
the display. |
| ListID |
This is the GadgetID number for the list display. Later, when
your program receives a GADGETUP event with this GadgetID,
this will indicate the user is clicking on an item in the
list, so call GetListItem which will highlight that item and
return a pointer to it. |
| ClickUpID |
Yet another GadgetID number, this is for the arrow gadget at
the top of the scroll bar, indicating the user wants to
scroll the display down one. When you receive a GADGETUP
event with this id call ClickList. |
| ClickDownID |
The last GadgetID number, this is for the down arrow below
the scroll bar. This is also used to call ClickList. |
| BorderPen |
The pen number for the border of the box that surrounds the
list. |
| FillPen |
The pen number for the inside of the box. |
| TopItem |
If you have a list of items to work with, put the pointer to
the top one here. If not, this must be NULL. |
| TopDisplayItem |
This is a pointer to the first item that should be displayed.
This might be the top item, or could be somewhere in the
middle of the list. If there is no list, make this NULL. |
| ActiveItem |
This is the currently highlighted item. If there is none,
make it NULL. |
| Window |
You must provide a pointer to the window this list is being
displayed in. |
| DrawRoutine |
This is a pointer to a routine that you provide to display
information about an item. When this routine is called later
on, it is passed five parameters:
- The rastport to draw in.
- A pointer to the item to display.
- X and Y coordinates for drawing.
- A flag that is set to
TRUE if this is to be highlighted,
FALSE if not.
How you go to highlighted is up to you.
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