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Subject |
Author |
Date |
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Viktor Korol
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Sep 12, 2008 - 7:02 AM
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1. Run the StyleEditor sample.
2. Click the Style->Font (or Style or Size) menu item.
3. Click by left mouse button on the thumb of the scroll-bar holding down the button move the mouse pointer over the menu’s window.
4. Application crashes.
If comment PeekMessage call in the next code then scroll works properly.
void CExtScrollBar::ScrollBar_TrackMouseLButtonDown(
MSG * pMSG
)
{
...
case WM_MOUSEMOVE:
if( m_nSBMHT == INT(CExtPaintManager::__ESBMHT_THUMB) )
{
if( ( ! CExtPopupMenuWnd::IsKeyPressed(VK_LBUTTON,true) )
|| CExtPopupMenuWnd::IsKeyPressed(VK_MBUTTON)
|| CExtPopupMenuWnd::IsKeyPressed(VK_RBUTTON)
|| ( (!bMenuMode) && CExtPopupMenuWnd::IsMenuTracking() )
)
{
bStopFlag = true;
break;
}
PeekMessage(&msg,NULL,msg.message,msg.message,PM_REMOVE);
bAnalyzeThumb = true;
::GetCursorPos( &ptCursor );
::ScreenToClient( hWndOwn, &ptCursor );
break;
} // if( m_nSBMHT == INT(CExtPaintManager::__ESBMHT_THUMB) )
if( nStepSize == 0 )
break;
...
}
Can I apply this fix without detriment to Prof-UIS functionality?
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Technical Support
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Sep 12, 2008 - 1:41 PM
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Thank you for reporting this issue. To fix it, please update the source code for the following method:bool CExtPopupControlMenuWnd::_OnMouseMove(
UINT nFlags,
CPoint point,
bool & bNoEat
)
{
ASSERT_VALID( this );
if( GetSafeHwnd() == NULL )
return false;
if( GetSite().GetAnimated() != NULL )
return true;
if( _IsResizingMode() )
{
bNoEat = true;
return false;
}
CExtPopupMenuSite & _site = GetSite();
if( _site.IsShutdownMode()
|| _site.IsEmpty()
|| _site.GetAnimated() != NULL
)
return true;
TranslateMouseMoveEventData_t _td( this, nFlags, point, bNoEat );
if( _td.Notify() )
{
bNoEat = _td.m_bNoEat;
return true;
}
CPoint ptScreenClick( point );
ClientToScreen( &ptScreenClick );
bool bRetVal = false;
if( m_hWndChildControl != NULL
&& ::IsWindow( m_hWndChildControl )
)
{
CPoint ptControlClient = ptScreenClick;
::ScreenToClient( m_hWndChildControl, &ptControlClient );
CONTROLINPUTRETRANSLATEINFO _ciri(
this,
true,
nFlags,
ptControlClient, // point,
bNoEat
);
bRetVal =
( ::SendMessage(
m_hWndChildControl,
g_nMsgControlInputRetranslate,
(WPARAM)(&_ciri),
(LPARAM)0L
) != 0 )
? true : false;
}
HWND hWndFromPoint = ::WindowFromPoint( ptScreenClick );
if( hWndFromPoint != NULL
&& (::__EXT_MFC_GetWindowLong(hWndFromPoint,GWL_STYLE)&WS_CHILD) != 0
&& ( m_hWndChildControl == hWndFromPoint
|| ::IsChild( m_hWndChildControl, hWndFromPoint )
)
)
{
bNoEat = true;
return false;
}
HWND hWndFocus = ::GetFocus();
if( hWndFocus != NULL
&& (::__EXT_MFC_GetWindowLong(hWndFocus,GWL_STYLE)&WS_CHILD) != 0
&& ( m_hWndChildControl == hWndFocus
|| ::IsChild( m_hWndChildControl, hWndFocus )
)
)
{
bNoEat = true;
return false;
}
HWND hWndCapture = ::GetCapture();
if( hWndCapture != NULL )
{
CWnd * pWndPermanent = CWnd::FromHandlePermanent( hWndCapture );
if( pWndPermanent != NULL )
{
if( pWndPermanent->IsKindOf( RUNTIME_CLASS(CScrollBar) ) )
{
bNoEat = true;
return false;
}
}
if( (::__EXT_MFC_GetWindowLong(hWndCapture,GWL_STYLE)&WS_CHILD) != 0
&& ( m_hWndChildControl == hWndCapture
|| ::IsChild( m_hWndChildControl, hWndCapture )
)
)
{
bNoEat = true;
return false;
}
}
if( (! bRetVal ) && (! _PtInWndArea( point ) ) )
{
if( _CoolTipIsVisible() )
{
_CoolTipHide( false );
Invalidate();
}
if( m_pWndParentMenu != NULL
&& m_pWndParentMenu->GetSafeHwnd() != NULL
)
{
ASSERT_VALID( m_pWndParentMenu );
ClientToScreen( &point );
m_pWndParentMenu->ScreenToClient( &point );
if( m_pWndParentMenu->_OnMouseMove(
nFlags,
point,
bNoEat
)
)
{
if( bNoEat )
return false;
_OnCancelMode();
return true;
}
}
return false;
} // if( (! bRetVal ) && (! _PtInWndArea( point ) ) )
else
{
if( _IsTearOff() )
{
if( CExtPopupMenuWnd::_HitTest(point) != IDX_TEAROFF )
Invalidate();
}
} // else from if( (! bRetVal ) && (! _PtInWndArea( point ) ) )
if( _IsTearOff() )
{
if( CExtPopupMenuWnd::_HitTest(point) == IDX_TEAROFF )
{
HWND hWndOwn = m_hWnd;
_ItemFocusCancel( TRUE, FALSE );
if( ! ::IsWindow( hWndOwn ) )
return true;
_SetCapture();
HCURSOR hCursor = ::LoadCursor( NULL, IDC_SIZEALL );
ASSERT( hCursor != NULL );
::SetCursor( hCursor );
if( g_bMenuShowCoolTips
&& GetSite().GetCapture() == this
)
{
CRect rcItem;
_GetItemRect(IDX_TEAROFF,rcItem);
ClientToScreen( &rcItem );
bool bShowTip = true;
CExtPopupMenuTipWnd & _tipWnd = GetTip();
if( _tipWnd.GetSafeHwnd() != NULL )
{
CRect rcExcludeArea = _tipWnd.GetExcludeArea();
if( rcExcludeArea == rcItem )
bShowTip = false;
}
if( bShowTip )
{
CExtSafeString sTipText;
g_ResourceManager->LoadString( sTipText, ID_EXT_TEAR_OFF_MENU_TIP );
if( sTipText.IsEmpty() )
sTipText = _T("Drag to make this menu float");
_tipWnd.SetText( sTipText );
VERIFY(
_tipWnd.Show(
this,
rcItem
)
);
}
}
return true;
}
_CoolTipHide( false );
HCURSOR hCursor = ::LoadCursor( NULL, IDC_ARROW );
ASSERT( hCursor != NULL );
::SetCursor( hCursor );
Invalidate();
}
return bRetVal;
}
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