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 /** Widget Management (Widget) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_system.h"
28 #include "gx_widget.h"
29
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _gx_widget_focus_previous PORTABLE C */
36 /* 6.1 */
37 /* AUTHOR */
38 /* */
39 /* Kenneth Maxwell, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* Move focus to previous widget in nav order. */
44 /* */
45 /* INPUT */
46 /* */
47 /* widget Widget control block */
48 /* */
49 /* OUTPUT */
50 /* */
51 /* status Completion status */
52 /* */
53 /* CALLS */
54 /* */
55 /* _gx_system_focus_claim */
56 /* */
57 /* CALLED BY */
58 /* */
59 /* Application Code */
60 /* GUIX Internal Code */
61 /* */
62 /* RELEASE HISTORY */
63 /* */
64 /* DATE NAME DESCRIPTION */
65 /* */
66 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
67 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
68 /* resulting in version 6.1 */
69 /* */
70 /**************************************************************************/
_gx_widget_focus_previous(GX_WIDGET * start)71 UINT _gx_widget_focus_previous(GX_WIDGET *start)
72 {
73 GX_WIDGET *previous;
74
75 if (start)
76 {
77 previous = start -> gx_widget_nav_previous;
78
79 if (previous)
80 {
81 _gx_system_focus_claim(previous);
82 return GX_SUCCESS;
83 }
84 }
85 return GX_FAILURE;
86 }
87
88
