The System.Windows.Forms.ToolTip class has an internal timer that it uses to set the display duration for ToolTips. The duration associated with this timer is set through the ToolTip.AutoPopDelay property. The ToolTip.StopTimer method will stop this internal timer, causing any displayed ToolTip to be shown modally until the ToolTip.Hide(IWin32Window) method is called, or the parent form is minimized, hidden, or closed.

Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Assembly Versions: 2.0.0.0