void wxListBoxBase::SetSelection(int n)
{
if ( !HasMultipleSelection() )
DoChangeSingleSelection(n);
DoSetSelection(n, true);
}
bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
{
wxEventType evtType;
int n = wxNOT_FOUND;
if ( param == LBN_SELCHANGE )
{
if ( HasMultipleSelection() )
return CalcAndSendEvent();
evtType = wxEVT_COMMAND_LISTBOX_SELECTED;
if ( m_selectedByKeyboard )
{
// We shouldn't use the mouse position to find the item as mouse
// can be anywhere, ask the listbox itself. Notice that this can't
// be used when the item is selected using the mouse however as
// LB_GETCARETINDEX will always return a valid item, even if the
// mouse is clicked below all the items, which is why we find the
// item ourselves below in this case.
n = SendMessage(GetHwnd(), LB_GETCARETINDEX, 0, 0);
}
//else: n will be determined below from the mouse position
}
else if ( param == LBN_DBLCLK )
{
evtType = wxEVT_COMMAND_LISTBOX_DOUBLECLICKED;
}
else
{
// some event we're not interested in
return false;
}
// Find the item position if it was a mouse-generated selection event or a
// double click event (which is always generated using the mouse)
if ( n == wxNOT_FOUND )
{
const DWORD pos = ::GetMessagePos();
const wxPoint pt(GET_X_LPARAM(pos), GET_Y_LPARAM(pos));
n = HitTest(ScreenToClient(wxPoint(pt)));
}
// We get events even when mouse is clicked outside of any valid item from
// Windows, just ignore them.
if ( n == wxNOT_FOUND )
return false;
if ( param == LBN_SELCHANGE )
{
if ( !DoChangeSingleSelection(n) )
return false;
}
// Do generate an event otherwise.
return SendEvent(evtType, n, true /* selection */);
}
void wxListBox::GTKOnSelectionChanged()
{
if ( HasFlag(wxLB_MULTIPLE | wxLB_EXTENDED) )
{
CalcAndSendEvent();
}
else // single selection
{
const int item = GetSelection();
if (item >= 0 && DoChangeSingleSelection(item))
SendEvent(wxEVT_LISTBOX, item, true);
}
}
bool wxListBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
{
wxEventType evtType;
if ( param == LBN_SELCHANGE )
{
if ( HasMultipleSelection() )
return CalcAndSendEvent();
evtType = wxEVT_LISTBOX;
}
else if ( param == LBN_DBLCLK )
{
// Clicking under the last item in the listbox generates double click
// event for the currently selected item which is rather surprising.
// Avoid the surprise by checking that we do have an item under mouse.
const DWORD pos = ::GetMessagePos();
const wxPoint pt(GET_X_LPARAM(pos), GET_Y_LPARAM(pos));
if ( HitTest(ScreenToClient(pt)) == wxNOT_FOUND )
return false;
evtType = wxEVT_LISTBOX_DCLICK;
}
else
{
// some event we're not interested in
return false;
}
const int n = ListBox_GetCurSel(GetHwnd());
// We get events even when mouse is clicked outside of any valid item from
// Windows, just ignore them.
if ( n == wxNOT_FOUND )
return false;
if ( param == LBN_SELCHANGE )
{
if ( !DoChangeSingleSelection(n) )
return false;
}
// Do generate an event otherwise.
return SendEvent(evtType, n, true /* selection */);
}
