A scrollercontrol allows the user to scroll, pan or zoom the contents of another control.
The target control must be specified, and the exact function of the activation operation depends on the target control's
type. All control types do not support scrolling, and in these cases the activation of this control does nothing.
This control supports panning and zooming (when control pressed on the keyboard) on imagecontrol objects
and scrolling on windowlist objects.
Defines the target control for the scrolling operation
Name of the target control in the same window instance with the scroller control
Defines the names of icon resources used for drawing the control in various modes
Icon for normal mode
Icon drawn when the control is activated by pressing the mouse button down upon it
Icon drawn when the user holds down the control key to activate zoom mode
Icon drawn when the control is activated in zoom mode by pressing the mouse button down upon it