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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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/** Scroll Management (Scroll) */ |
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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_scrollbar.h" |
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/* Bring in externs for caller checking code. */ |
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GX_CALLER_CHECKING_EXTERNS |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gxe_scroll_thumb_create 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 checks errors in the scroll thumb create function. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* scroll_thumb Scroll thumb control block */ |
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/* parent Pointer to parent scrollbar */ |
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/* style Style of scroll bar */ |
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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_scroll_thumb_create The actual scroll thumb */ |
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/* create routine */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application 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 _gxe_scroll_thumb_create(GX_SCROLL_THUMB *scroll_thumb, GX_SCROLLBAR *parent, ULONG style, UINT scroll_thumb_control_block_size) |
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{ |
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UINT status; |
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/* Check for appropriate caller. */ |
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✓✓✓✓
✓✓ |
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GX_INIT_AND_THREADS_CALLER_CHECKING |
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/* Check for invalid input pointers. */ |
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✓✓ |
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if (scroll_thumb == GX_NULL) |
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{ |
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return(GX_PTR_ERROR); |
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} |
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/* Check for widget already created. */ |
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✓✓ |
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if (scroll_thumb -> gx_widget_type != 0) |
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{ |
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return(GX_ALREADY_CREATED); |
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} |
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/* Check for invalid control block size. */ |
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✓✓ |
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if (scroll_thumb_control_block_size != sizeof(GX_SCROLL_THUMB)) |
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{ |
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return(GX_INVALID_SIZE); |
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} |
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/* Check for invalid parent widget. */ |
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✓✓✓✓
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if (parent && parent -> gx_widget_type == 0) |
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{ |
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return(GX_INVALID_WIDGET); |
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} |
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/* Call actual multi line text input create function. */ |
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status = _gx_scroll_thumb_create(scroll_thumb, parent, style); |
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/* Return the error status from window create. */ |
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return(status); |
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} |
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