1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** GUIX Component */
17 /** */
18 /** Scroll Management (Scroll) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "gx_api.h"
28 #include "gx_scrollbar.h"
29
30 /* Bring in externs for caller checking code. */
31 GX_CALLER_CHECKING_EXTERNS
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _gxe_scroll_thumb_create PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* Kenneth Maxwell, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function checks errors in the scroll thumb create function. */
46 /* */
47 /* INPUT */
48 /* */
49 /* scroll_thumb Scroll thumb control block */
50 /* parent Pointer to parent scrollbar */
51 /* style Style of scroll bar */
52 /* */
53 /* OUTPUT */
54 /* */
55 /* status Completion status */
56 /* */
57 /* CALLS */
58 /* */
59 /* _gx_scroll_thumb_create The actual scroll thumb */
60 /* create routine */
61 /* */
62 /* CALLED BY */
63 /* */
64 /* Application Code */
65 /* */
66 /* RELEASE HISTORY */
67 /* */
68 /* DATE NAME DESCRIPTION */
69 /* */
70 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
71 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
72 /* resulting in version 6.1 */
73 /* */
74 /**************************************************************************/
_gxe_scroll_thumb_create(GX_SCROLL_THUMB * scroll_thumb,GX_SCROLLBAR * parent,ULONG style,UINT scroll_thumb_control_block_size)75 UINT _gxe_scroll_thumb_create(GX_SCROLL_THUMB *scroll_thumb, GX_SCROLLBAR *parent, ULONG style, UINT scroll_thumb_control_block_size)
76 {
77 UINT status;
78
79 /* Check for appropriate caller. */
80 GX_INIT_AND_THREADS_CALLER_CHECKING
81
82 /* Check for invalid input pointers. */
83 if (scroll_thumb == GX_NULL)
84 {
85 return(GX_PTR_ERROR);
86 }
87
88 /* Check for widget already created. */
89 if (scroll_thumb -> gx_widget_type != 0)
90 {
91 return(GX_ALREADY_CREATED);
92 }
93
94 /* Check for invalid control block size. */
95 if (scroll_thumb_control_block_size != sizeof(GX_SCROLL_THUMB))
96 {
97 return(GX_INVALID_SIZE);
98 }
99
100 /* Check for invalid parent widget. */
101 if (parent && parent -> gx_widget_type == 0)
102 {
103 return(GX_INVALID_WIDGET);
104 }
105
106 /* Call actual multi line text input create function. */
107 status = _gx_scroll_thumb_create(scroll_thumb, parent, style);
108
109 /* Return the error status from window create. */
110 return(status);
111 }
112
113
