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Update KeyboardToolTipStateMachine.cs #14176

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Update KeyboardToolTipStateMachine.cs #14176

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8e27080
Update KeyboardToolTipStateMachine.cs
stumper66 Dec 29, 2025
14a9833
Update KeyboardToolTipStateMachine.cs
stumper66 Dec 29, 2025
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11 changes: 8 additions & 3 deletions src/System.Windows.Forms/System/Windows/Forms/ToolTip/KeyboardToolTipStateMachine.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -247,15 +247,20 @@ void wrapper(object? sender, EventArgs eventArgs)
return wrapper;
}

private void Transit(SmEvent @event, IKeyboardToolTip source)
private void Transit(SmEvent @event, IKeyboardToolTip? source)
{
bool fullFsmResetRequired = false;
try
{
ToolTip? toolTip = _toolToTip[source];
ToolTip? toolTip = null;
if (source is object)
{
toolTip = _toolToTip[source];
}

if ((_currentTool is null || _currentTool.CanShowToolTipsNow()) && toolTip is not null)
{
_currentState = Transition(source, toolTip, @event);
_currentState = Transition(source!, toolTip, @event);
}
else
{
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