// Called when a control currently in the collection
// has a property changed - this handles propagating
// the new property values to the Win32 API.
// If there isn't a way to change the Win32 value, then we
// should have already screened out the property set
// in NotifyControlPropertyChanging.
void IDialogControlHost.ApplyControlPropertyChange(string propertyName, DialogControl control)
{
// We only need to apply changes to the
// native dialog when it actually exists.
if (NativeDialogShowing)
{
// One of the progress bar flavors?
if (control is TaskDialogMarquee)
{
if (propertyName == "State")
{
nativeDialog.UpdateProgressBarState(marquee.State);
}
else
{
Debug.Assert(true, "Unknown property being set");
}
}
else if (control is TaskDialogProgressBar)
{
if (!progressBar.HasValidValues)
{
throw new ArgumentException(
"Progress bar must have a value between Minimum and Maximum.");
}
switch (propertyName)
{
case "State":
nativeDialog.UpdateProgressBarState(progressBar.State);
break;
case "Value":
nativeDialog.UpdateProgressBarValue(progressBar.Value);
break;
case "Minimum":
case "Maximum":
nativeDialog.UpdateProgressBarRange();
break;
default:
Debug.Assert(true, "Unknown property being set");
break;
}
}
else if (control is TaskDialogButton)
{
TaskDialogButton button = (TaskDialogButton)control;
switch (propertyName)
{
case "ShowElevationIcon":
nativeDialog.UpdateElevationIcon(button.Id, button.ShowElevationIcon);
break;
case "Enabled":
if (control is TaskDialogRadioButton)
{
nativeDialog.UpdateRadioButtonEnabled(button.Id, button.Enabled);
}
else
{
nativeDialog.UpdateButtonEnabled(button.Id, button.Enabled);
}
break;
default:
Debug.Assert(true, "Unknown property being set");
break;
}
}
else
{
// Do nothing with property change -
// note that this shouldn't ever happen, we should have
// either thrown on the changing event, or we handle above.
Debug.Assert(true, "Control property changed notification not handled properly - being ignored");
}
}
return;
}
