83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/******************************************************************************
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*
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* Copyright (c) 1996-2003 PalmSource, Inc. All rights reserved.
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*
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* File: ScrollBar.h
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*
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* Release: Palm OS 5 SDK (68K) R3.
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*
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* Description:
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* This file defines scroll bar structures and routines.
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*
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*****************************************************************************/
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#ifndef __SCROLLBAR_H__
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#define __SCROLLBAR_H__
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#include <PalmTypes.h>
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#include <CoreTraps.h>
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#include <Rect.h>
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#include <Event.h>
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typedef enum { sclUpArrow, sclDownArrow, sclUpPage, sclDownPage, sclCar }
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ScrollBarRegionType;
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typedef struct ScrollBarAttrTag
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#ifdef ALLOW_ACCESS_TO_INTERNALS_OF_SCROLLBARS // These fields will not be available in the next OS release!
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{
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UInt16 usable :1; // Set if part of ui
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UInt16 visible :1; // Set if drawn, used internally
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UInt16 hilighted :1; // Set if region is hilighted
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UInt16 shown :1; // Set if drawn and maxValue > minValue
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UInt16 activeRegion :4; // ScrollBarRegionType
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UInt16 reserved :8; // Reserved for future use
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}
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#endif
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ScrollBarAttrType;
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typedef struct ScrollBarType
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#ifdef ALLOW_ACCESS_TO_INTERNALS_OF_SCROLLBARS // These fields will not be available in the next OS release!
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{
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RectangleType bounds;
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UInt16 id;
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ScrollBarAttrType attr;
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Int16 value;
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Int16 minValue;
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Int16 maxValue;
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Int16 pageSize;
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Int16 penPosInCar;
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Int16 savePos;
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}
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#endif
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ScrollBarType;
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typedef ScrollBarType *ScrollBarPtr;
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern void SclGetScrollBar (const ScrollBarType *bar, Int16 *valueP,
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Int16 *minP, Int16 *maxP, Int16 *pageSizeP)
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SYS_TRAP(sysTrapSclGetScrollBar);
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extern void SclSetScrollBar (ScrollBarType *bar, Int16 value,
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Int16 min, Int16 max, Int16 pageSize)
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SYS_TRAP(sysTrapSclSetScrollBar);
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extern void SclDrawScrollBar (ScrollBarType *bar)
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SYS_TRAP(sysTrapSclDrawScrollBar);
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extern Boolean SclHandleEvent (ScrollBarType *bar, const EventType *event)
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SYS_TRAP(sysTrapSclHandleEvent);
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#ifdef __cplusplus
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}
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#endif
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#endif //__SCROLLBAR_H__
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