gtk_window_set_icon_name() does not work?

["Wang HJ" <hjwang126 hotmail com>]

Hello,

I write "gtk_window_set_ico_name(GTK_WINDOW(mainwindow),"gtk-open")" in my 
code and also sucessfully built my code. But as soon as I run it, an error 
message given " The procedure point gtk_window_set_ico_name could not be 
located in the dynamic link liberary libgtk-win32-2.0-0.dll.
How to slove it.

Thanks