set_icon
  
  Description:
  [ 
Version ( since = 
"2.12" ) ]
public void set_icon (
Pixbuf? pixbuf)
  
    Sets the icon of the tooltip (which is in front of the text) to be pixbuf.
     If pixbuf is null, the image will be hidden.
    Parameters:
    
      
        | this | a Tooltip | 
      
        | pixbuf | a Pixbuf, or null |