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Applied patch #445873

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11216 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn 2001-07-30 21:37:56 +00:00
parent 9cd6d737d5
commit ac6f6ffccf
1 changed files with 14 additions and 2 deletions
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14
src/generic/scrlwing.cpp
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@ -273,6 +273,8 @@ wxScrollHelper::~wxScrollHelper()
if ( m_targetWindow )
m_targetWindow->PopEventHandler(TRUE /* do delete it */);
if ( m_win && m_win != m_targetWindow)
m_win->PopEventHandler(TRUE /* do delete it */);
}
// ----------------------------------------------------------------------------
@ -358,7 +360,17 @@ void wxScrollHelper::SetScrollbars(int pixelsPerUnitX,
void wxScrollHelper::SetTargetWindow( wxWindow *target )
{
wxASSERT_MSG( target, wxT("target window must not be NULL") );
// FIXME: There is a potential problem with this way of deleting
// event handlers, basically you can not be sure that you delete
// the event handler that was create by this wxScrollHelper.
// Remove the old event handler from the previous target scroll window.
if (m_targetWindow && m_targetWindow != m_win)
m_targetWindow->PopEventHandler(TRUE /* Delete old event handler*/);
m_targetWindow = target;
// Install a new event handler, which will intercept the events we're
// interested in from the target scroll window.
if (m_targetWindow != m_win)
m_targetWindow->PushEventHandler(new wxScrollHelperEvtHandler(this));
}
wxWindow *wxScrollHelper::GetTargetWindow() const
@ -980,7 +992,7 @@ void wxScrollHelper::HandleOnMouseWheel(wxMouseEvent& event)
wxScrollWinEvent newEvent;
newEvent.SetPosition(m_xScrollPosition - lines);
newEvent.SetPosition(0);
newEvent.SetOrientation(wxVERTICAL);
newEvent.m_eventObject = m_win;
if (lines > 0)