private void OnGiveFeedback(object sender, GiveFeedbackEventArgs e)
{
if (m_dragData != null)
{
DropDescriptionHelper.DefaultGiveFeedback(m_dragData, e);
}
}
/// <summary>
/// Handles DataChanged events from a COM IDataObject.
/// </summary>
/// <param name="format">The data format that had a change.</param>
/// <param name="stgmedium">The data value.</param>
public void OnDataChange(ref FORMATETC format, ref STGMEDIUM stgmedium)
{
// We listen to DropDescription changes, so that we can unset the IsDefault
// drop description flag.
var odd = DropDescriptionHelper.GetDropDescription(m_data);
if (odd != null)
{
DropDescriptionHelper.SetDropDescriptionIsDefault(m_data, false);
}
}
/// <summary>
/// Tell the system that you are using a default description that can be cleared automatically</summary>
/// <param name="e">The DragEventArgs from the OnDragEnter/OnDragOver event</param>
/// <param name="value">A boolean indicating whether the message is set as default or not</param>
public static void SetDescriptionIsDefault(this DragEventArgs e, bool value)
{
DropDescriptionHelper.SetDropDescriptionIsDefault((IComDataObject)e.Data, value);
}
/// <summary>
/// Set the description on a Shell Image drag/drop action</summary>
/// <param name="e">DragEventArgs for event</param>
public static void ClearDescription(this DragEventArgs e)
{
DropDescriptionHelper.SetDropDescription((IComDataObject)e.Data, DropImageType.Invalid, null, null);
}
/// <summary>
/// Set the description on a Shell Image drag/drop action.
/// Some UI coloring is applied to the text in <paramref name="insert"/> if used by specifying %1
/// in <paramref name="message"/>.
/// The characters %% and %1 are the subset of FormatMessage markers that are processed here.</summary>
/// <param name="e">The DragEventArgs from the OnDragEnter/OnDragOver event</param>
/// <param name="message">Text such as "Move to %1"</param>
/// <param name="insert">Text such as "Documents", inserted as specified by <paramref name="message"/></param>
public static void SetDescription(this DragEventArgs e, string message, string insert)
{
DropDescriptionHelper.SetDropDescription((IComDataObject)e.Data, (DropImageType)e.Effect, message, insert);
}
