1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** GUIX Component */
16 /** */
17 /** Scrollbar Management (Scrollbar) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_scrollbar.h"
28
29 /* Bring in externs for caller checking code. */
30 GX_CALLER_CHECKING_EXTERNS
31
32 /**************************************************************************/
33 /* */
34 /* FUNCTION RELEASE */
35 /* */
36 /* _gxe_scrollbar_event_process PORTABLE C */
37 /* 6.1 */
38 /* AUTHOR */
39 /* */
40 /* Kenneth Maxwell, Microsoft Corporation */
41 /* */
42 /* DESCRIPTION */
43 /* */
44 /* This function checks errors in the scrollbar event process function.*/
45 /* */
46 /* INPUT */
47 /* */
48 /* scrollbar Scrollbar control block */
49 /* event_ptr Incoming event to process */
50 /* */
51 /* OUTPUT */
52 /* */
53 /* status Completion status */
54 /* */
55 /* CALLS */
56 /* */
57 /* _gx_scrollbar_event_process The actual scrollbar event */
58 /* process call */
59 /* */
60 /* CALLED BY */
61 /* */
62 /* Application Code */
63 /* */
64 /* RELEASE HISTORY */
65 /* */
66 /* DATE NAME DESCRIPTION */
67 /* */
68 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
69 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
70 /* resulting in version 6.1 */
71 /* */
72 /**************************************************************************/
_gxe_scrollbar_event_process(GX_SCROLLBAR * scrollbar,GX_EVENT * event_ptr)73 UINT _gxe_scrollbar_event_process(GX_SCROLLBAR *scrollbar, GX_EVENT *event_ptr)
74 {
75 UINT status;
76
77 /* Check for appropriate caller. */
78 GX_INIT_AND_THREADS_CALLER_CHECKING
79
80 /* Check for invalid input pointers. */
81 if ((scrollbar == GX_NULL) || (event_ptr == GX_NULL))
82 {
83 return(GX_PTR_ERROR);
84 }
85
86 /* Check for invalid widget. */
87 if (scrollbar -> gx_widget_type == 0)
88 {
89 return(GX_INVALID_WIDGET);
90 }
91
92 /* Call the actual function. */
93 status = _gx_scrollbar_event_process(scrollbar, event_ptr);
94
95 /* Return completion status. */
96 return(status);
97 }
98
99
