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DragASprite Introduction
Programmer's Reference Manuals
» Part 7 - The Desktop
» DragASprite
» Introduction
The DragASprite module provides functionality to drag a sprite around the screen using the pointer.
To drag a sprite the following process steps should be followed:
- Choose a sprite that you wish to use to display when dragging
- Call the SWI DragASprite_Start to begin the drag. This SWI takes a copy of the sprite so the original can be removed from memory if required
- When the Wimp sends an indication that the drag has finished via Wimp_Poll DragASprite_Stop should then be called.
Notes
Because a user may not wish for a sprite to be displayed, for whatever reason, a well written application should always check user preferences to see if a sprite should be displayed, or alternatively just display an outline.