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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** GUIX Component */ |
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/** */ |
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/** Tree View Management (View) */ |
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/** */ |
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/**************************************************************************/ |
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#define GX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "gx_api.h" |
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#include "gx_menu.h" |
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#include "gx_widget.h" |
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#include "gx_system.h" |
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#include "gx_tree_view.h" |
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#include "gx_window.h" |
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#include "gx_scrollbar.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_tree_view_position PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* This function positions a tree menu. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* tree Tree view control block */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_widget_first_client_child_get Get the first client child */ |
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/* _gx_widget_next_client_child_get Get the next client child */ |
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/* _gx_widget_height_get Get widget height */ |
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/* _gx_widget_width_get Get widget width */ |
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/* _gx_widget_resize Resize a widget */ |
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/* _gx_menu_position Position a menu widget */ |
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/* _gx_window_scrollbar_find Find scrollbar for a window */ |
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/* _gx_scrollbar_reset Reset scrollbar information */ |
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/* _gx_widget_hide Hide a widget */ |
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/* _gx_widget_show Show a widget */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
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/* GUIX Internal Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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UINT _gx_tree_view_position(GX_TREE_VIEW *tree) |
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{ |
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GX_WIDGET *child; |
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GX_RECTANGLE size; |
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GX_RECTANGLE *client; |
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GX_VALUE height; |
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GX_VALUE width; |
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GX_VALUE bottom; |
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GX_VALUE max_right = 0; |
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GX_MENU_LIST *list; |
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GX_SCROLLBAR *scroll; |
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client = &tree -> gx_window_client; |
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size.gx_rectangle_left = (GX_VALUE)(client -> gx_rectangle_left + tree -> gx_tree_view_indentation + tree -> gx_tree_view_x_shift); |
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bottom = (GX_VALUE)(client -> gx_rectangle_top - 1 + tree -> gx_tree_view_y_shift); |
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child = _gx_widget_first_client_child_get((GX_WIDGET *)tree); |
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/* Reposition tree view items. */ |
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✓✓ |
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while (child) |
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{ |
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✓✓ |
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if (child -> gx_widget_type == GX_TYPE_MENU_LIST) |
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{ |
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child = _gx_widget_next_client_child_get(child); |
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continue; |
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} |
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_gx_widget_height_get(child, &height); |
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_gx_widget_width_get(child, &width); |
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size.gx_rectangle_top = (GX_VALUE)(bottom + 1); |
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size.gx_rectangle_bottom = (GX_VALUE)(size.gx_rectangle_top + height - 1); |
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size.gx_rectangle_right = (GX_VALUE)(size.gx_rectangle_left + width - 1); |
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_gx_widget_resize((GX_WIDGET *)child, &size); |
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✓✓ |
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if (child -> gx_widget_type == GX_TYPE_MENU) |
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{ |
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_gx_menu_position((GX_MENU *)child, tree -> gx_tree_view_indentation); |
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list = &((GX_MENU *)child) -> gx_menu_list; |
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✓✓✓✓
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if (list -> gx_widget_parent && list -> gx_widget_first_child) |
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{ |
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bottom = list -> gx_widget_size.gx_rectangle_bottom; |
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✓✓ |
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if (list -> gx_widget_size.gx_rectangle_right > max_right) |
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{ |
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max_right = list -> gx_widget_size.gx_rectangle_right; |
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} |
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} |
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else |
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{ |
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✓✓ |
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if (list -> gx_widget_parent) |
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{ |
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_gx_widget_detach((GX_WIDGET *)list); |
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} |
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bottom = size.gx_rectangle_bottom; |
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✓✓ |
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if (size.gx_rectangle_right > max_right) |
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{ |
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max_right = size.gx_rectangle_right; |
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} |
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} |
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} |
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else |
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{ |
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bottom = size.gx_rectangle_bottom; |
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} |
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child -> gx_widget_status &= (ULONG)(~GX_STATUS_ACCEPTS_FOCUS); |
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child = _gx_widget_next_client_child_get(child); |
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} |
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tree -> gx_tree_view_tree_width = (GX_VALUE)(max_right - (client -> gx_rectangle_left + tree -> gx_tree_view_x_shift) + 1); |
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tree -> gx_tree_view_tree_height = (GX_VALUE)(bottom - (client -> gx_rectangle_top + tree -> gx_tree_view_y_shift) + 1); |
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_gx_window_scrollbar_find((GX_WINDOW *)tree, (USHORT)GX_TYPE_HORIZONTAL_SCROLL, &scroll); |
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width = (GX_VALUE)(client -> gx_rectangle_right - client -> gx_rectangle_left + 1); |
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height = (GX_VALUE)(client -> gx_rectangle_bottom - client -> gx_rectangle_top + 1); |
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✓✓ |
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if (scroll) |
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{ |
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_gx_scrollbar_reset(scroll, GX_NULL); |
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✓✓ |
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if (tree -> gx_tree_view_tree_width <= width) |
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{ |
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_gx_widget_hide((GX_WIDGET *)scroll); |
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} |
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else |
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{ |
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_gx_widget_show((GX_WIDGET *)scroll); |
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} |
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} |
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_gx_window_scrollbar_find((GX_WINDOW *)tree, GX_TYPE_VERTICAL_SCROLL, &scroll); |
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✓✓ |
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if (scroll) |
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{ |
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_gx_scrollbar_reset(scroll, GX_NULL); |
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✓✓ |
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if (tree -> gx_tree_view_tree_height <= height) |
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{ |
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_gx_widget_hide((GX_WIDGET *)scroll); |
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} |
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else |
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{ |
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_gx_widget_show((GX_WIDGET *)scroll); |
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} |
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} |
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✓✓ |
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if ((tree -> gx_widget_style & GX_STYLE_TREE_VIEW_SHOW_ROOT_LINES) && |
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✓✓ |
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(tree -> gx_widget_status & GX_STATUS_VISIBLE)) |
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{ |
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_gx_system_dirty_mark((GX_WIDGET *)tree); |
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} |
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/* Return completion status code. */ |
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return(GX_SUCCESS); |
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} |
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