c++返回结构数组给c#

最新推荐文章于 2025-06-23 08:29:45 发布

原创最新推荐文章于 2025-06-23 08:29:45 发布 · 1.8k 阅读

CC 4.0 BY-SA版权

文章标签：

C++：
StructFormItem* EnumFormItem(int* nCount)
{
     if(g_FormEdit.m_hWnd)
     {
         return g_FormEdit.EnumFormitem(nCount);
     }
     return NULL;
}

void FreeMemory(StructFormItem* pFormItems)
{
     delete[] pFormItems;
}

StructFormItem* XFormEditor::EnumFormitem(int* pFormItems)
{
     XFormItemList * pList = m_pEditor->m_XItemContainer.GetItemList();
     XFormItemList * pHead = pList;
     int nCount = 0;
     while (pHead != NULL)
     {
         pHead = pHead->lpNext;
         nCount++;
     }
     StructFormItem* pStructFormItem = new StructFormItem[nCount];
     int nIndex = 0;
     while(pList != NULL)
     {
         XFormItem* pItem = NULL;
         pItem = pList->lpItem;
         pStructFormItem[nIndex].nID = pItem->m_nIdent;
         pStructFormItem[nIndex].dwType = pItem->m_dwType;
         pStructFormItem[nIndex].left = pItem->m_rcRect.left;
         pStructFormItem[nIndex].width = pItem->m_rcRect.right-pItem->m_rcRect.left;
         pStructFormItem[nIndex].top = pItem->m_rcRect.top;
         pStructFormItem[nIndex].height = pItem->m_rcRect.bottom-pItem->m_rcRect.top ;
         pList = pList->lpNext;
         nIndex++;
     }
     *pFormItems = nCount;
     return pStructFormItem;
}
c#使用
[DllImport(@"FormEditor.dll", EntryPoint = "EnumFormItem")]
        public static extern IntPtr EnumFormItem(out int count);

        [DllImport(@"FormEditor.dll", EntryPoint = "FreeMemory")]
        public static extern void FreeMemory(IntPtr formItemsPtr);
int number;
            IntPtr ptrFormItem = EnumFormItem(out number);
            IntPtr prtHead = ptrFormItem;
            for (int i = 0; i < number; ++i)
            {
                FormItemInfo iteminfo = (FormItemInfo)Marshal.PtrToStructure(ptrFormItem, typeof(FormItemInfo));
                ptrFormItem = (IntPtr)(ptrFormItem.ToInt32() + Marshal.SizeOf(typeof(FormItemInfo)));
            }
            FreeMemory(prtHead);