ImageManager issue in 11.2.1

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   Hi,

After upgrading to toolkitpro 11.2.1, I have encountered a problem. 

We are using CXTPImageManager to load icons for a treeview control.

Here is the code:

CImageList m_ImageList;
m_ImageList.Create(16, 16, ILC_MASK | ILC_COLOR32, 0, 0);

<...>

CXTPImageManagerIconSet*pIconSet=XTPImageManager()->GetIconSet(nIcon);
        if(pIconSet==0)
        {
            return false;
        }

        CXTPImageManagerIcon* pIcon=pIconSet->GetIcon(16);
        if(pIcon==0)
        {
            return false;
        }

        m_ImageList.Add(CBitmap::FromHandle(pIcon->GetIcon().GetBitmap()), (CBitmap*)0);

The actual images are loaded to the image manager from a 32-bit png-file.

This worked fine with the version 11.1.3 . Now I cannot see any icons in the treeview. 
Debugging showed that I get valid (not null) iconset and an icon. Event GetIcon().GetBitmap() seems to return a valid handle. 

I've seen that the release notes mention some ImageManager changes, but I was not able to figure out what to do.

Best Regards,
Pavol

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pavold Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 14 May 2007 Status: Offline Points: 23	Post Options Post Reply Quote pavold Report Post Thanks(0) Quote Reply Topic: ImageManager issue in 11.2.1 Posted: 03 December 2007 at 8:27am
	Hi, After upgrading to toolkitpro 11.2.1, I have encountered a problem. We are using CXTPImageManager to load icons for a treeview control. Here is the code: CImageList m_ImageList; m_ImageList.Create(16, 16, ILC_MASK \| ILC_COLOR32, 0, 0); <...> CXTPImageManagerIconSetpIconSet=XTPImageManager()->GetIconSet(nIcon); if(pIconSet==0) { return false; } CXTPImageManagerIcon pIcon=pIconSet->GetIcon(16); if(pIcon==0) { return false; } m_ImageList.Add(CBitmap::FromHandle(pIcon->GetIcon().GetBitmap()), (CBitmap*)0); The actual images are loaded to the image manager from a 32-bit png-file. This worked fine with the version 11.1.3 . Now I cannot see any icons in the treeview. Debugging showed that I get valid (not null) iconset and an icon. Event GetIcon().GetBitmap() seems to return a valid handle. I've seen that the release notes mention some ImageManager changes, but I was not able to figure out what to do. Best Regards, Pavol

pavold Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 14 May 2007 Status: Offline Points: 23	Post Options Post Reply Quote pavold Report Post Thanks(0) Quote Reply Posted: 03 December 2007 at 8:32am
	Sorry for the misinformation. I have just found out that GetBitmap() returns 0. How can I get a valid handle?

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: 03 December 2007 at 3:21pm
	Hello, See release notes - we modified imagemanager. You can create copy of handle before access: CXTPImageManagerIconHandle handle; handle.CopyHandle(pIcon->GetIcon()); m_ImageList.Add(CBitmap::FromHandle(handle.GetBitmap()), (CBitmap*)0); But think you can better use direct methods that load alpha bitmaps. btw - CImageList supports 32bit alpha bitmaps only in WindowsXP, but CXTPImageManager for all OS.....
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS

iamthewind Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 September 2007 Location: China Status: Offline Points: 22	Post Options Post Reply Quote iamthewind Report Post Thanks(0) Quote Reply Posted: 16 December 2007 at 10:36pm
	oleg, I have a question on this topic too. I wish to using CXTPImageManager to load icons for a CXTTreeCtrl control, but CXTTreeCtrl only support CImageList: CImageList* SetImageList(CImageList* pImageList, int nImageListType); you said "CImageList supports 32bit alpha bitmaps only in WindowsXP, but CXTPImageManager for all OS.....", but how could I use CXTPImageManager for CXTTreeCtrl? Thanks very much!

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: 17 December 2007 at 1:25am
	Yes, CXTTreeCtrl doesn't support ImageManager :( You can manually draw icons in OnCustomDraw handler: void CTreeViewCtrl::OnCustomDraw(NMHDR* pNMHDR, LRESULT* pResult) { NMTVCUSTOMDRAW* lpLVCD = reinterpret_cast<NMTVCUSTOMDRAW>(pNMHDR); pResult = CDRF_DODEFAULT; switch (lpLVCD->nmcd.dwDrawStage) { case CDDS_PREPAINT: pResult = CDRF_NOTIFYITEMDRAW; break; case CDDS_PREPAINT \| CDDS_ITEM: { pResult \|= CDRF_NOTIFYPOSTPAINT; break; } case CDDS_POSTPAINT \| CDDS_ITEM: case CDDS_POSTPAINT \| CDDS_ITEM \| CDDS_SUBITEM: { ... CXTPImageManagerIcon* pIcon = m_pIcons->GetImage(pItem->m_nIcon, m_nIconSize); if (!pIcon) pIcon = m_pIcons->GetImage(pItem->m_nIcon, ICON_SMALL); if (!pIcon) return; CRect rc(0, 0, 0, 0); GetTreeCtrl()->GetItemRect(pItem->m_hItem, rc, TRUE); if (!rc.IsRectEmpty()) { XTPImageState imageState = xtpImageNormal; if (GetTreeCtrl()->GetItemState(hItem, TVIS_SELECTED) & TVIS_SELECTED) imageState = xtpImageHot; CPoint pt(rc.left - m_nIconSize - 2, (rc.top + rc.bottom - sz.cy) / 2); pIcon->Draw(CDC::FromHandle(lpLVCD->nmcd.hdc), pt, pIcon->GetIcon(imageState), sz); } ... break; } }
	Oleg, Support Team CODEJOCK SOFTWARE SOLUTIONS