XPDrawWindow

WIDGET_API void       XPDrawWindow(
                         int                  inX1,
                         int                  inY1,
                         int                  inX2,
                         int                  inY2,
                         XPWindowStyle        inStyle);

This routine draws a window of the given dimensions at the given offset on the virtual screen in a given style. The window is automatically scaled as appropriate using a bitmap scaling technique (scaling or repeating) as appropriate to the style.

XPGetWindowDefaultDimensions

WIDGET_API void       XPGetWindowDefaultDimensions(
                         XPWindowStyle        inStyle,
                         int *                outWidth,    /* Can be NULL */
                         int *                outHeight);    /* Can be NULL */

This routine returns the default dimensions for a window. Output is either a minimum or fixed value depending on whether the window is scalable.

XPDrawElement

WIDGET_API void       XPDrawElement(
                         int                  inX1,
                         int                  inY1,
                         int                  inX2,
                         int                  inY2,
                         XPElementStyle       inStyle,
                         int                  inLit);

XPDrawElement draws a given element at an offset on the virtual screen in set dimensions. Even if the element is not scalable, it will be scaled if the width and height do not match the preferred dimensions; it’ll just look ugly. Pass inLit to see the lit version of the element; if the element cannot be lit this is ignored.

XPGetElementDefaultDimensions

WIDGET_API void       XPGetElementDefaultDimensions(
                         XPElementStyle       inStyle,
                         int *                outWidth,    /* Can be NULL */
                         int *                outHeight,    /* Can be NULL */
                         int *                outCanBeLit);    /* Can be NULL */

This routine returns the recommended or minimum dimensions of a given UI element. outCanBeLit tells whether the element has both a lit and unlit state. Pass NULL to not receive any of these parameters.

XPDrawTrack

WIDGET_API void       XPDrawTrack(
                         int                  inX1,
                         int                  inY1,
                         int                  inX2,
                         int                  inY2,
                         int                  inMin,
                         int                  inMax,
                         int                  inValue,
                         XPTrackStyle         inTrackStyle,
                         int                  inLit);

This routine draws a track. You pass in the track dimensions and size; the track picks the optimal orientation for these dimensions. Pass in the track’s minimum current and maximum values; the indicator will be positioned appropriately. You can also specify whether the track is lit or not.

XPGetTrackDefaultDimensions

WIDGET_API void       XPGetTrackDefaultDimensions(
                         XPTrackStyle         inStyle,
                         int *                outWidth,
                         int *                outCanBeLit);

This routine returns a track’s default smaller dimension; all tracks are scalable in the larger dimension. It also returns whether a track can be lit.

XPGetTrackMetrics

WIDGET_API void       XPGetTrackMetrics(
                         int                  inX1,
                         int                  inY1,
                         int                  inX2,
                         int                  inY2,
                         int                  inMin,
                         int                  inMax,
                         int                  inValue,
                         XPTrackStyle         inTrackStyle,
                         int *                outIsVertical,
                         int *                outDownBtnSize,
                         int *                outDownPageSize,
                         int *                outThumbSize,
                         int *                outUpPageSize,
                         int *                outUpBtnSize);

This routine returns the metrics of a track. If you want to write UI code to manipulate a track, this routine helps you know where the mouse locations are. For most other elements, the rectangle the element is drawn in is enough information. However, the scrollbar drawing routine does some automatic placement; this routine lets you know where things ended up. You pass almost everything you would pass to the draw routine. You get out the orientation, and other useful stuff.

Besides orientation, you get five dimensions for the five parts of a scrollbar, which are the down button, down area (area before the thumb), the thumb, and the up area and button. For horizontal scrollers, the left button decreases; for vertical scrollers, the top button decreases.