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Dear Support,

I added a tooltip to a CExtEdit derived class.

When I hover over the edit box the tooltip appears. then, if I move the mouse inside the edit box, each move generates flicker in the tooltip. If I move the mouse fast, the flickering is very annoying.

Please fix.

Thanks,

Ron.

You need to use your tooltip window only if you created your tooltip class and modified its behavior.

As I explained, the problem is SetIcon that causes redraws which causes flickers:

1) Why isn’t the drawing of the tooltip double-buffers to reduce flicker?

2) Why does the SetIcon causes redraw while other setters functions do not?

Prof-UIS always use the CExtPopupMenuTipWnd as a styled replacement of a classic tooltip. Classic tooltips never change on the fly. But, of course, we can implement double buffered painting to avoid flicker when your app invokes the CExtPopupMenuTipWnd::SetIcon() API. Please update the source code for the following method:

void CExtPopupMenuTipWnd::_DoPaint(
    CDC & dcPaint,
    bool bUseBackBuffer //= true
    )
{
    bUseBackBuffer;
CRect rcLayout;
    GetClientRect( &rcLayout );
CExtMemoryDC dc( &dcPaint, &rcLayout );
HRGN hRegion = CreateRectRgnIndirect( &rcLayout );
    GetWindowRgn( hRegion );
CRgn * pRegion = CRgn::FromHandle( hRegion );

CExtPaintManager * pPM = PmBridge_GetPM();
    ASSERT_VALID( pPM );
CFont * pAdvTipFont = &m_fontAdvTip;
    if( pAdvTipFont->GetSafeHandle() == NULL )
        pAdvTipFont = pPM->AdvTip_GetFont( this );
    if( pAdvTipFont->GetSafeHandle() == NULL )
        pAdvTipFont = &(pPM->m_FontNormal);
COLORREF clrAdvTipText = pPM->AdvTip_GetTextColor( this );
    if( clrAdvTipText == COLORREF(-1L) )
        clrAdvTipText = pPM->GetColor( COLOR_INFOTEXT, this );
e_tip_style_t eTS = GetTipStyle();
    switch( eTS )
    {
    case __ETS_BALLOON:
    case __ETS_BALLOON_NO_ICON:
    {
        CBrush brushWindow;
        brushWindow.CreateSolidBrush(
            //pPM->GetColor( COLOR_INFOBK, this )
            ::GetSysColor( COLOR_INFOBK )
            );
        CBrush brushFrame;
        brushFrame.CreateSolidBrush(
            //pPM->GetColor( COLOR_3DDKSHADOW, this )
            ::GetSysColor( COLOR_3DDKSHADOW )
            );
        CBrush brushInnerFrame;
        brushInnerFrame.CreateSolidBrush(
            //pPM->GetColor( COLOR_3DFACE, this)
            ::GetSysColor( COLOR_3DFACE )
            );
        // frame
        dc.FillRgn( pRegion, &brushWindow );
        dc.FrameRgn( pRegion, &brushInnerFrame, 3, 3 );
        dc.FrameRgn( pRegion, &brushFrame, 1, 1 );
        // adjust icon’s area
        rcLayout.DeflateRect( m_sizeRounders.cx, m_sizeRounders.cy, 0, 0 );
        if( eTS != __ETS_BALLOON_NO_ICON && (! m_icon.IsEmpty() ) )
            rcLayout.left += m_sizeRenderingIcon.cx + m_nIconMarginDX;
        CFont * pOldFont = dc.SelectObject( pAdvTipFont );
        int nOldBkMode = dc.SetBkMode( TRANSPARENT );
        int nIconVertPos = m_sizeRounders.cy;
        if( m_bFlipVert )
        {
            rcLayout.OffsetRect( 0, m_sizeLeader.cy );
            nIconVertPos += m_sizeLeader.cy;
        }
        COLORREF clrOldTextColor = dc.SetTextColor( clrAdvTipText );
        CExtRichContentLayout::stat_DrawText(
            dc.m_hDC,
            LPCTSTR(m_sText), m_sText.GetLength(),
            &rcLayout,
            DT_TOP|DT_LEFT, 0
            );
        dc.SetBkMode( nOldBkMode );
        dc.SetTextColor( clrOldTextColor );
        dc.SelectObject( pOldFont );
        // icon
        if( eTS != __ETS_BALLOON_NO_ICON && (! m_icon.IsEmpty() ) )
        {
            m_icon.Paint(
                pPM,
                dc.GetSafeHdc(),
                 m_sizeRounders.cx,
                 nIconVertPos,
                 m_sizeRenderingIcon.cx,
                 m_sizeRenderingIcon.cy
                );
        }
    } // cases __ETS_BALLOON, __ETS_BALLOON_NO_ICON
    break;
    case __ETS_RECTANGLE:
    case __ETS_RECTANGLE_NO_ICON:
    case __ETS_INV_RECTANGLE:
    case __ETS_INV_RECTANGLE_NO_ICON:
    {
        int nSizeShadow = CalcShadowSize();
        ASSERT( nSizeShadow >= 0 );
        if( nSizeShadow > 0 )
        {
            rcLayout.DeflateRect( 0, 0, nSizeShadow, nSizeShadow );
            m_shadow.Paint(
                pPM,
                dc,
                rcLayout,
                CRect( 0, 0, 0, 0 ),
                CRect( 0, 0, 0, 0 ),
                nSizeShadow,
                70,
                95
                );
        }

        bool bAdvTipWithShadow =
            (    m_nSizeShadow > 0
            ||    (    m_ctrlShadow.GetSafeHwnd() != NULL
                &&    ( m_ctrlShadow.GetStyle() & WS_VISIBLE ) != 0
                )
            ) ? true : false;
        if(    ! pPM->AdvTip_PaintBackground(
                dc,
                rcLayout,
                bAdvTipWithShadow,
                this
                )
            )
        {
            // frame
            //dc.FillRgn( pRegion, &brushWindow );
            //dc.FrameRgn( pRegion, &brushFrame, 1, 1 );
            dc.FillSolidRect(
                &rcLayout,
                ::GetSysColor( COLOR_INFOBK )
                );
            dc.Draw3dRect(
                &rcLayout,
                pPM->GetColor( COLOR_3DDKSHADOW, this ),
                pPM->GetColor( COLOR_3DDKSHADOW, this )
                );
        }

        // adjust icon’s area
        rcLayout.DeflateRect( m_sizeClassicMargins );
        if(        eTS != __ETS_RECTANGLE_NO_ICON
            &&    eTS != __ETS_INV_RECTANGLE_NO_ICON
            &&    (! m_icon.IsEmpty() )
            )
            rcLayout.left += m_sizeRenderingIcon.cx + m_nIconMarginDX;
        
        CFont * pOldFont = dc.SelectObject( pAdvTipFont );
        int nOldBkMode = dc.SetBkMode( TRANSPARENT );
        COLORREF clrOldTextColor = dc.SetTextColor( clrAdvTipText );
        CExtRichContentLayout::stat_DrawText(
            dc.m_hDC,
            LPCTSTR(m_sText), m_sText.GetLength(),
            &rcLayout,
            DT_TOP|DT_LEFT|DT_VCENTER, 0
            );
        dc.SetBkMode( nOldBkMode );
        dc.SetTextColor( clrOldTextColor );
        dc.SelectObject( pOldFont );

        // icon
        if(        eTS != __ETS_RECTANGLE_NO_ICON
            &&    eTS != __ETS_INV_RECTANGLE_NO_ICON
            &&    (! m_icon.IsEmpty() )
            )
        {
            int nIconHorzPos =
                rcLayout.left
                - m_sizeRenderingIcon.cx
                - m_nIconMarginDX
                ;
            int nIconVertPos =
                rcLayout.top
                + ( rcLayout.Height() - m_sizeRenderingIcon.cy ) / 2
                ;
            m_icon.Paint(
                pPM,
                dc.GetSafeHdc(),
                nIconHorzPos,
                nIconVertPos,
                m_sizeRenderingIcon.cx,
                m_sizeRenderingIcon.cy
                );
        }
    } // rectangle cases
    break;
#ifdef _DEBUG
    default:
        ASSERT( FALSE );
    break;
#endif // _DEBUG
    } // switch( eTS )
    ::DeleteObject( hRegion );
}

This looks like a conflict of two tooltip controls. The CExtEdit class provides tooltip support. You don’t need to code the same in your CExtEdit-derived class

Hi,

I found the problem - it happens because of my implementation of OnAdvancedPopupMenuTipWndDisplay. In this function, I set the icon of the tooltip by calling _ATTW.SetIcon(...). This function at its end calls RedrawWindow.

The problem is that OnAdvancedPopupMenuTipWndDisplay is called in every mouse move, even if I did not leave the control, so it generated a call the redraw the tooltip.

I bypassed it, because I don’t update the icon very often, but I suggest that you’ll look into it.

Thanks,

Ron.

There is no conflict - I just call the built-in CExtEdit functions.