/// <summary>
/// 在指定控件附近显示消息
/// </summary>
/// <param name="controlOrItem">控件或工具栏项</param>
/// <param name="text">消息文本</param>
/// <param name="tipIcon">内置图标</param>
/// <param name="delay">消息停留时长（毫秒）。指定负数则使用 DefaultDelay</param>
public static void Show(Component controlOrItem, string text, TipIcon tipIcon = TipIcon.None, int delay = -1)
{
if (controlOrItem == null)
{
throw new ArgumentNullException("controlOrItem");
}
Show(text, CheckAndConvertTipIconValue(tipIcon), delay, GetCenterPosition(controlOrItem));
}
/// <summary>
/// 检测枚举值合法性并转换为Image
/// </summary>
private static Image CheckAndConvertTipIconValue(TipIcon tipIcon)
{
int i = (int)tipIcon;
if (i < 0 || i > 3)
{
throw new InvalidEnumArgumentException("tipIcon", i, typeof(TipIcon));
}
return(_icons[i]);
}
/// <summary>
/// 显示消息
/// </summary>
/// <param name="text">消息文本</param>
/// <param name="tipIcon">内置图标</param>
/// <param name="delay">消息停留时长（毫秒）。指定负数则使用 DefaultDelay</param>
/// <param name="point">指定显示位置。为null则按活动控件</param>
public static void Show(string text, TipIcon tipIcon = TipIcon.None, int delay = -1, Point?point = null)
{
Show(text, CheckAndConvertTipIconValue(tipIcon), delay, point);
}