private void OnToolTipOpening(object sender, ToolTipEventArgs e)
{
AssertIsForeground();
Debug.Assert(_element.ToolTip == this);
Debug.Assert(_disposableToolTip == null);
_disposableToolTip = _createToolTip();
_element.ToolTip = _disposableToolTip.ToolTip;
}
private void OnToolTipClosing(object sender, ToolTipEventArgs e)
{
AssertIsForeground();
Debug.Assert(_disposableToolTip != null);
Debug.Assert(_element.ToolTip == _disposableToolTip.ToolTip);
_element.ToolTip = this;
_disposableToolTip.Dispose();
_disposableToolTip = null;
}
private void OnToolTipOpening(object sender, ToolTipEventArgs e)
{
try
{
AssertIsForeground();
Debug.Assert(_element.ToolTip == this);
Debug.Assert(_disposableToolTip == null);
_disposableToolTip = _createToolTip();
_element.ToolTip = _disposableToolTip.ToolTip;
}
catch (Exception ex) when(FatalError.ReportAndCatch(ex))
{
// Do nothing, since this is a WPF event handler and propagating the exception would cause a crash
}
}