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 /** Scroll Wheel Management (Generic Scroll Wheel) */
18 /** */
19 /**************************************************************************/
20
21 #define GX_SOURCE_CODE
22
23
24 /* Include necessary system files. */
25
26 #include "gx_api.h"
27 #include "gx_scroll_wheel.h"
28
29 GX_CALLER_CHECKING_EXTERNS
30
31 /**************************************************************************/
32 /* */
33 /* FUNCTION RELEASE */
34 /* */
35 /* _gxe_generic_scroll_wheel_event_process PORTABLE C */
36 /* 6.1.7 */
37 /* AUTHOR */
38 /* */
39 /* Ting Zhu, Microsoft Corporation */
40 /* */
41 /* DESCRIPTION */
42 /* */
43 /* This function checks for errors in the generic scroll wheel event */
44 /* process function call. */
45 /* */
46 /* INPUT */
47 /* */
48 /* wheel Generic scroll wheel control */
49 /* block */
50 /* event_ptr Pointer to event to process */
51 /* */
52 /* OUTPUT */
53 /* */
54 /* status Completion status */
55 /* */
56 /* CALLS */
57 /* */
58 /* _gxe_generic_scroll_wheel_event_process */
59 /* Actual generic scroll wheel */
60 /* event process function */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 06-02-2021 Ting Zhu Initial Version 6.1.7 */
71 /* */
72 /**************************************************************************/
_gxe_generic_scroll_wheel_event_process(GX_GENERIC_SCROLL_WHEEL * wheel,GX_EVENT * event_ptr)73 UINT _gxe_generic_scroll_wheel_event_process(GX_GENERIC_SCROLL_WHEEL *wheel, GX_EVENT *event_ptr)
74 {
75
76 /* Check for appropriate caller. */
77 GX_INIT_AND_THREADS_CALLER_CHECKING
78
79 /* Check for invalid input pointers. */
80 if ((wheel == GX_NULL) || (event_ptr == GX_NULL))
81 {
82 return GX_PTR_ERROR;
83 }
84
85 /* Check for invalid widget. */
86 if (wheel -> gx_widget_type == 0)
87 {
88 return GX_INVALID_WIDGET;
89 }
90
91 /* Call the actual generic scroll wheel event process function. */
92 return _gx_generic_scroll_wheel_event_process(wheel, event_ptr);
93 }
94
95
