70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/*
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*********************************************************************************************************
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* uC/GUI
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* Universal graphic software for embedded applications
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*
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* (c) Copyright 2002, Micrium Inc., Weston, FL
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* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
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*
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* µC/GUI is protected by international copyright laws. Knowledge of the
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* source code may not be used to write a similar product. This file may
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* only be used in accordance with a license and should not be redistributed
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* in any way. We appreciate your understanding and fairness.
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*
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----------------------------------------------------------------------
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File : GUI_ARRAY_DeleteItem.c
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Purpose : Array handling routines
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---------------------------END-OF-HEADER------------------------------
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*/
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#include "GUI_ARRAY.h"
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#include <string.h>
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#if GUI_WINSUPPORT
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/*********************************************************************
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*
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* public code
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* GUI_ARRAY_DeleteItem
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*
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* Purpose:
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* Eliminate one element in a GUI_ARRAY.
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* This means:
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* - freeing the memory block
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* - moving the last item to the position of the deleted item
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* - possible reducing the size of the memory used for management (opt)
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*
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*/
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void GUI_ARRAY_DeleteItem(GUI_ARRAY* pThis, unsigned int Index) {
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WM_HMEM ha;
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WM_HMEM* pa;
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int i;
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if (Index < (unsigned)pThis->NumItems) {
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ha = pThis->haHandle;
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if (ha) {
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int NumItems;
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WM_LOCK();
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pa = (WM_HMEM*) GUI_ALLOC_h2p(ha);
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/* Free the attached item */
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GUI_ALLOC_FreePtr(pa + Index);
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/* Move the last items to the position of the deleted item */
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NumItems = --pThis->NumItems;
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for (i = Index; i <= NumItems - 1; i++) {
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*(pa + i) = *(pa + i + 1);
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}
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WM_UNLOCK();
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}
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}
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}
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#else
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void GUI_ARRAY_DeleteItem(void) {}
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#endif
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