void wxSpinButton::SetRange(int minVal, int maxVal)
{
const bool hadRange = m_min < m_max;
wxSpinButtonBase::SetRange(minVal, maxVal);
#ifdef UDM_SETRANGE32
if ( wxApp::GetComCtl32Version() >= 471 )
{
// use the full 32 bit range if available
::SendMessage(GetHwnd(), UDM_SETRANGE32, minVal, maxVal);
}
else // we're limited to 16 bit
#endif // UDM_SETRANGE32
{
::SendMessage(GetHwnd(), UDM_SETRANGE, 0,
(LPARAM) MAKELONG((short)maxVal, (short)minVal));
}
// the current value might be out of the new range, force it to be in it
NormalizeValue();
// if range was valid but becomes degenerated (min == max) now or vice
// versa then the spin buttons are automatically disabled/enabled back
// but don't update themselves for some reason, so do it manually
if ( hadRange != (m_min < m_max) )
{
// update the visual state of the button
Refresh();
}
}
bool wxSpinButton::ChangeValue(int inc)
{
int valueNew = NormalizeValue(m_value + inc);
if ( valueNew == m_value )
{
// nothing changed - most likely because we are already at min/max
// value
return false;
}
wxSpinEvent event(inc > 0 ? wxEVT_SCROLL_LINEUP : wxEVT_SCROLL_LINEDOWN,
GetId());
event.SetPosition(valueNew);
event.SetEventObject(this);
if ( GetEventHandler()->ProcessEvent(event) && !event.IsAllowed() )
{
// programm has vetoed the event
return false;
}
m_value = valueNew;
// send wxEVT_SCROLL_THUMBTRACK as well
event.SetEventType(wxEVT_SCROLL_THUMBTRACK);
(void)GetEventHandler()->ProcessEvent(event);
return true;
}
void wxSpinCtrl::OnKillFocus(wxFocusEvent& event)
{
// ensure that a correct value is shown by the control
NormalizeValue();
event.Skip();
}