151 lines
4.3 KiB
C
151 lines
4.3 KiB
C
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/*
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* CURSORS.C
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* Buttons & Cursors Version 1.1, Win32 version August 1993
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*
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* Public functions to retrieve new cursors from the BTTNCUR DLL based
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* on ordinal to prevent applications from necessarily calling LoadCursor
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* directly on the DLL.
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*
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* Copyright (c)1992-1993 Microsoft Corporation, All Rights Reserved,
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* as applied to redistribution of this source code in source form
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* License is granted to use of compiled code in shipped binaries.
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*/
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#ifdef WIN32
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#define _INC_OLE
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#define __RPC_H__
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#endif
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#include <windows.h>
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#include "bttncur.h"
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#include "bttncuri.h"
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/*
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* The +1 is because MAX is the highest allowable number and MIN is not
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* necessarily zero.
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*/
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HCURSOR rgHCursors[IDC_NEWUICURSORMAX-IDC_NEWUICURSORMIN+1];
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/*
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* CursorsCache
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* Internal
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*
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* Purpose:
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* Loads all the cursors available through NewUICursorLoad into
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* a global array. This way we can clean up all the cursors without
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* placing the burden on the application.
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*
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* Parameters:
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* hInst HANDLE of the DLL instance.
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*
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* Return Value:
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* None. If any of the LoadCursor calls fail, then the corresponding
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* array entry is NULL and NewUICursorLoad will fail. Better to fail
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* an app getting a cursor than failing to load the app just for that
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* reason; and app can attempt to load the cursor on startup if it's
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* that important, and fail itself.
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*/
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void CursorsCache(HINSTANCE hInst)
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{
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UINT i;
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for (i=IDC_NEWUICURSORMIN; i<=IDC_NEWUICURSORMAX; i++)
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rgHCursors[i-IDC_NEWUICURSORMIN]=LoadCursor(hInst, MAKEINTRESOURCE(i));
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return;
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}
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/*
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* CursorsFree
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* Internal
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*
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* Purpose:
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* Frees all the cursors previously loaded through CursorsCache.
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*
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* Parameters:
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* None
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*
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* Return Value:
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* None
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*/
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void CursorsFree(void)
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{
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/*
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* Note that since cursors are discardable resources and should
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* not be used with DestroyCursor, there's nothing to do here.
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* We still provide this API for compatibility and to maintain
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* symmetry.
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*/
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return;
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}
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/*
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* UICursorLoad
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* Public API
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*
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* Purpose:
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* Loads and returns a handle to one of the new standard UI cursors
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* contained in UITOOLS.DLL. The application must not call DestroyCursor
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* on this cursor as it is managed by the DLL.
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*
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* Parameters:
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* iCursor UINT index to the cursor to load which must be one
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* of the following values:
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*
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* IDC_RIGHTARROW Right pointing standard arrow
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* IDC_CONTEXTHELP Arrow with a ? (context help)
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* IDC_MAGNIFY Magnifying glass for zooming
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* IDC_NODROP Circle with a slash
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* IDC_TABLETOP Small arrow pointing down
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*
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* IDC_SMALLARROWS Thin four-headed arrow
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* IDC_LARGEARROWS Wide four-headed arrow
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* IDC_HARROWS Horizontal two-headed arrow
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* IDC_VARROWS Vertical two-headed arrow
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* IDC_NESWARROWS Two-headed arrow pointing NE<->SW
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* IDC_NWSEHARROWS Two-headed arrow pointing NW<->SE
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*
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* IDC_HSIZEBAR Horizontal two-headed arrow with
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* a single vertical bar down the
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* middle
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*
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* IDC_VSIZEBAR Vertical two-headed arrow with a
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* single horizontal bar down the
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* middle
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*
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* IDC_HSPLITBAR Horizontal two-headed arrow with
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* split double vertical bars down the
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* middle
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*
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* IDC_VSPLITBAR Vertical two-headed arrow with split
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* double horizontal bars down the
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* middle
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*
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* Return Value:
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* HCURSOR Handle to the loaded cursor if successful, NULL
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* if iCursor is out of range or the function could not
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* load the cursor.
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*/
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HCURSOR WINAPI UICursorLoad(UINT iCursor)
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{
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HCURSOR hCur=NULL;
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if ((iCursor >= IDC_NEWUICURSORMIN) && (iCursor <= IDC_NEWUICURSORMAX))
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hCur=rgHCursors[iCursor-IDC_NEWUICURSORMIN];
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return hCur;
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}
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