CMarkupTreeCtrl::SetItemText...

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Consider this:

HTREEITEM CMarkupTreeCtrl::AddItem(LPCTSTR lpszItem, int nImage, int nSelectedImage, HTREEITEM hParent/* = TVI_ROOT*/, HTREEITEM hInsertAfter/* = TVI_LAST*/)

{
    CXTPMarkupUIElement* pUIElement = Parse(lpszItem);
    ...

Now I want to update the text, so I implemented SetItemText. The problem is: how do I free the memory held by the previous CXTPMarkupUIElement object? The destructor is private!

----------------------------------------------------------------------------------------
BOOL CMarkupTreeCtrl::SetItemText(HTREEITEM hItem, LPCTSTR lpszItem)
{
    CXTPMarkupUIElement* pOldElement = (CXTPMarkupUIElement*)GetItemData(hItem);
    SetItemData(hItem, NULL); // Not sure if this is necessary?
    // FREE pOldElement??

    BOOL retVal = FALSE;
    CXTPMarkupUIElement* pUIElement = Parse(lpszItem);
    if (pUIElement)
        retVal = CXTTreeCtrl::SetItemText(hItem, GetInnerText(pUIElement));
    else
        retVal = CXTTreeCtrl::SetItemText(hItem, lpszItem);

    SetItemData(hItem, (DWORD_PTR)pUIElement);

    return retVal;
}

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znakeeye Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 26 July 2006 Status: Offline Points: 1672	Post Options Post Reply Quote znakeeye Report Post Thanks(0) Quote Reply Topic: CMarkupTreeCtrl::SetItemText... Posted: 04 September 2009 at 9:55am
	Consider this: HTREEITEM CMarkupTreeCtrl::AddItem(LPCTSTR lpszItem, int nImage, int nSelectedImage, HTREEITEM hParent/* = TVI_ROOT/, HTREEITEM hInsertAfter/ = TVI_LAST/) { CXTPMarkupUIElement pUIElement = Parse(lpszItem); ... Now I want to update the text, so I implemented SetItemText. The problem is: how do I free the memory held by the previous CXTPMarkupUIElement object? The destructor is private! ---------------------------------------------------------------------------------------- BOOL CMarkupTreeCtrl::SetItemText(HTREEITEM hItem, LPCTSTR lpszItem) { CXTPMarkupUIElement* pOldElement = (CXTPMarkupUIElement)GetItemData(hItem); SetItemData(hItem, NULL); // Not sure if this is necessary?* // FREE pOldElement?? BOOL retVal = FALSE; CXTPMarkupUIElement* pUIElement = Parse(lpszItem); if (pUIElement) retVal = CXTTreeCtrl::SetItemText(hItem, GetInnerText(pUIElement)); else retVal = CXTTreeCtrl::SetItemText(hItem, lpszItem); SetItemData(hItem, (DWORD_PTR)pUIElement); return retVal; }

Oleg Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 21 May 2003 Location: United States Status: Offline Points: 11234	Post Options Post Reply Quote Oleg Report Post Thanks(0) Quote Reply Posted: 04 September 2009 at 11:08am
	Hi, Call MARKUP_RELEASE(pOldElement) or XTPMarkupReleaseElement();
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS

znakeeye Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 26 July 2006 Status: Offline Points: 1672	Post Options Post Reply Quote znakeeye Report Post Thanks(0) Quote Reply Posted: 07 September 2009 at 6:26am
	Thanks! Btw, is the call to SetItemData(NULL) dangerous or can you assume that WM_PAINT is not sent at this time?

Oleg Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 21 May 2003 Location: United States Status: Offline Points: 11234	Post Options Post Reply Quote Oleg Report Post Thanks(0) Quote Reply Posted: 07 September 2009 at 6:38am
	Hi, Don't think Microsoft do this, but guess you have to test it.
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS