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Ensure that new value sent in EVT_SPIN_UP/DOWN is never out the range (wxMSW)

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The new value sent in the event cannot be just set to the current value +/- 1. Wrapping and actual limits has to be taken into account.

See #17957.
This commit is contained in:
Artur Wieczorek 2017-09-22 15:30:05 +02:00
parent a9843a7492
commit 3b0a539045
1 changed files with 20 additions and 2 deletions
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22
src/msw/spinbutt.cpp
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@ -251,13 +251,31 @@ bool wxSpinButton::MSWOnNotify(int WXUNUSED(idCtrl), WXLPARAM lParam, WXLPARAM *
{
NM_UPDOWN *lpnmud = (NM_UPDOWN *)lParam;
if (lpnmud->hdr.hwndFrom != GetHwnd()) // make sure it is the right control
if ( lpnmud->hdr.hwndFrom != GetHwnd() || // make sure it is the right control
lpnmud->hdr.code != UDN_DELTAPOS ) // and the right notification
return false;
int newVal = lpnmud->iPos + lpnmud->iDelta;
if ( newVal < m_min )
{
newVal = HasFlag(wxSP_WRAP) ? m_max : m_min;
}
else if ( newVal > m_max )
{
newVal = HasFlag(wxSP_WRAP) ? m_min : m_max;
}
// Don't send an event if the value hasn't actually changed (for compatibility with wxGTK and wxOSX).
if ( newVal == lpnmud->iPos )
{
*result = 1;
return true;
}
wxSpinEvent event(lpnmud->iDelta > 0 ? wxEVT_SCROLL_LINEUP
: wxEVT_SCROLL_LINEDOWN,
m_windowId);
event.SetPosition(lpnmud->iPos + lpnmud->iDelta);
event.SetPosition(newVal);
event.SetEventObject(this);
bool processed = HandleWindowEvent(event);