Codejock Developer Community : CXTTreeCtrl

CXTPToolTipContext m_ToolTipContext;

}

BOOL MyTreeCtrl::PreTranslateMessage( MSG* pMsg )

{

BOOL bPreTrans = TRUE;

if( m_bUseCodejockTips )

{

m_ToolTipContext.FilterToolTipMessage(this, pMsg);

}

bPreTrans = CTreeCtrl::PreTranslateMessage( pMsg );

return bPreTrans;

}

INT_PTR MyTreeCtrl::OnToolHitTest(CPoint point, TOOLINFO* pTI) const

{

UINT temp = 0;

if( false == m_bUseCodejockTips )

{

return CTreeCtrl::OnToolHitTest( point, pTI );

}

else

{

//CPoint treePt = point;

//ClientToScreen( &treePt );

//m_tree.ScreenToClient( &treePt );

////TVHITTESTINFO HitTestInfo;

//HTREEITEM hItem = HitTest( treePt, 0 );

HTREEITEM hItem = HitTest( point, &temp );

if( hItem )

{

pTI->lpszText = NULL;

pTI->hwnd = GetSafeHwnd();

pTI->uId = (UINT_PTR)hItem;// both are the same size on 32/64 bit system

// Get the item rectangle for the text only. The MSDN does not say so but at least on my Vista

// machine I have found that passing in FALSE for bTextOnly results in the returned rectangle

// being clipped to the client rect of the tree.

CRect rect;

GetItemRect( hItem, &rect, TRUE );

// Now get the tree's client rectangle.

CRect clientRect;

GetClientRect(&clientRect);

// Now union the two so I can see if the result is larger than the client rect. If it is, then

// I assume the user cannot see all the text string and I will tip the user.

CRect unionRect;

unionRect.UnionRect(&clientRect,&rect);

BOOL bTip = unionRect != clientRect;

if( false == bTip )

{

// Text may be within the client rect of the tree control but if it is pushed off-screen, say

// by moving it to the right side of the monitor the text may not be visible to the user. So

// I will compare to the desktop and tip if I think the user cannot see the full text.

CRect desktopRect;

if (::GetWindowRect (GetDesktopWindow ()->GetSafeHwnd (), &desktopRect))

{

AdjustDesktopRectForMultipleMonitors(&desktopRect);

ClientToScreen( clientRect );

CRect intersectRect;

intersectRect.IntersectRect( clientRect, desktopRect );

bTip = intersectRect != clientRect;

}

if( bTip )

{

CString strText = GetItemText( hItem );

// I have also found that if I send in the "text only" rectangle, and the text is not fully

// displayed due to the client rect, if the user places the mouse over the icon, CJ does not

// display the text. I need the item rect for the entire item.

CRect entireRect;

GetItemRect( hItem, &entireRect, FALSE );

CXTPToolTipContext::FillInToolInfo( pTI, pTI->hwnd, entireRect, pTI->uId, strText );

return (UINT_PTR)hItem;

}

return -1; // not found

}

At some point, init the context member data to your liking. Here's what I do:

void InitializeCXTPToolTipContext( CXTPToolTipContext* pToolTipContext )

{

if( pToolTipContext )

{

pToolTipContext->SetDelayTime(TTDT_INITIAL, 300);

pToolTipContext->SetDelayTime(TTDT_RESHOW, 0);// even 1 is useless

pToolTipContext->SetDelayTime(TTDT_AUTOPOP, 15000);// appears to be useless

pToolTipContext->SetStyle(xtpToolTipOffice2007);

pToolTipContext->ShowTitleAndDescription();

pToolTipContext->ShowImage(TRUE, 0);

pToolTipContext->SetMargin(CRect(5, 5, 5, 5));

pToolTipContext->SetMaxTipWidth(300);

//pToolTipContext->SetDelayTime(TTDT_INITIAL, 900);

//pToolTipContext->SetDelayTime(TTDT_RESHOW, 900);

pToolTipContext->SetTipBkColor(XTPColorManager()->GetColor(COLOR_GRADIENTINACTIVECAPTION));

}