Programmatically show tooltip in winforms application

Question

How can I programatically cause a control\'s tooltip to show in a Winforms app without needing the mouse to hover over the control? (P/Invoke is ok if necessary).

Answer 1

If you create your variable private to the whole form, you will be able to call the sub for the and adjust the initialdelay.

Public Class MyForm        
Private MyTooltip As New ToolTip        
...        
Sub ApplyToolTips        
'For default        
ApplyToolTips (1000)        
End Sub        

Sub ApplyTooltips (ByVal Delay as Integer)        

MyTooltip .InitialDelay = Delay        
MyTooltip.AutoPopDelay = 5000        
...        
MyTooltip.SetToolTip(Me.btnClose, "Close the form")        

End Sub       

Private Sub Btn_Click(sender As System.Object, e As System.EventArgs) Handles Btn.Click           
    Dim PicBox As PictureBox = CType(sender, PictureBox)        
    ApplyTooltips (0)       
    ApplyTooltips (1000)       
End Sub