[SOLVED]Access viloation on CXTPControlGallery

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Hi, I have found a some error when set true to CXTPControlGallery::SetScrollBarAuto.

Here is sample code. (Used in "Codejock/Sample/Ribbon/RibbonControls/MainFrm.cpp")

// Create Inline Gallery
if (pTabGallery)
{
  CXTPRibbonGroup* pGroup = pTabGallery->AddGroup(ID_GROUP_INLINE);
  pGroup->SetControlsCentering(TRUE);

  CXTPControlGallery* pControlGallery = new CXTPControlGallery();
  pControlGallery->SetControlSize(CSize(192, 60));
  pControlGallery->ShowLabels(FALSE);
  pControlGallery->ShowScrollBar(TRUE);
  pControlGallery->ShowBorders(TRUE);
  pControlGallery->SetItems(m_pItemsFontTextColor);
  pControlGallery->SetScrollBarAuto(TRUE);       <<<<<<<<<< I just added one line code !!!
  pGroup->Add(pControlGallery, ID_GALLERY_STYLES);	

  ...
}

// Now ScreenShot
Just only one item displayed and occurred Access Violation error when mouse move on gallery control.

// To-be ScreenShot

// CallStack

// Stange Codes
I think below codes are strange...

void CXTPControlGallery::RepositionCore(BOOL bCheckScroll)
{
	CRect rcItems = GetItemsRect();

	int x = rcItems.left;
	int y = rcItems.top;
	BOOL bFirstItem = TRUE;

	int nCount = GetItemCount();

    // if item count is 10, m_arrRects will be set size too
	m_arrRects.SetSize(nCount);
	int nRowHeight = 0;

	for (int i = 0 ; i < nCount; i++)
	{
		CXTPControlGalleryItem* pItem = GetItem(i);
		m_arrRects.pItem = pItem;
		m_arrRects.bBeginRow = FALSE;

		if (pItem->IsLabel())
		{
			...
		}
		else
		{
			...
		}
    // but breaked when i == 5 ...
    // m_arrRects[6] ~ m_arrRects[9] are will be null pointer!!!
		if (bCheckScroll && y + nRowHeight + rcItems.top > rcItems.Height())
		{
			break;
		}
	}

	y += nRowHeight;

	m_nTotalHeight = y - rcItems.top;
}

Thanks.

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jhlee.8804 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 01 December 2015 Status: Offline Points: 8	Post Options Post Reply Quote jhlee.8804 Report Post Thanks(1) Quote Reply Topic: [SOLVED]Access viloation on CXTPControlGallery Posted: 07 December 2015 at 10:34am
	Hi, I have found a some error when set true to CXTPControlGallery::SetScrollBarAuto. Here is sample code. (Used in "Codejock/Sample/Ribbon/RibbonControls/MainFrm.cpp") // Create Inline Gallery if (pTabGallery) { CXTPRibbonGroup* pGroup = pTabGallery->AddGroup(ID_GROUP_INLINE); pGroup->SetControlsCentering(TRUE); CXTPControlGallery* pControlGallery = new CXTPControlGallery(); pControlGallery->SetControlSize(CSize(192, 60)); pControlGallery->ShowLabels(FALSE); pControlGallery->ShowScrollBar(TRUE); pControlGallery->ShowBorders(TRUE); pControlGallery->SetItems(m_pItemsFontTextColor); pControlGallery->SetScrollBarAuto(TRUE); <<<<<<<<<< I just added one line code !!! pGroup->Add(pControlGallery, ID_GALLERY_STYLES); ... } // Now ScreenShot Just only one item displayed and occurred Access Violation error when mouse move on gallery control. // To-be ScreenShot // CallStack // Stange Codes I think below codes are strange... void CXTPControlGallery::RepositionCore(BOOL bCheckScroll) { CRect rcItems = GetItemsRect(); int x = rcItems.left; int y = rcItems.top; BOOL bFirstItem = TRUE; int nCount = GetItemCount(); // if item count is 10, m_arrRects will be set size too m_arrRects.SetSize(nCount); int nRowHeight = 0; for (int i = 0 ; i < nCount; i++) { CXTPControlGalleryItem* pItem = GetItem(i); m_arrRects.pItem = pItem; m_arrRects.bBeginRow = FALSE; if (pItem->IsLabel()) { ... } else { ... } // but breaked when i == 5 ... // m_arrRects[6] ~ m_arrRects[9] are will be null pointer!!! if (bCheckScroll && y + nRowHeight + rcItems.top > rcItems.Height()) { break; } } y += nRowHeight; m_nTotalHeight = y - rcItems.top; } Thanks.

agontarenko Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 25 March 2016 Status: Offline Points: 299	Post Options Post Reply Quote agontarenko Report Post Thanks(0) Quote Reply Posted: 22 July 2016 at 9:25am
	Hello, I'm glad to inform you that the issue has been fixed. The fix will be available in the next beta or final release. (svn revision 17840) Regards, Artem Gontarenko