enable/disable button

[Tim Hilden <Linuxer TeleLev net>]

hiho,

I want to enable or disable a button, depending on if there is an entry 
selected in a clist. Initially I disable the global GtkWidget 
btn_connect vis gtk_widget_set_state(btn_connect, GTK_STATE_INSENSITIV), 
then I have a callback func, which is called on a "select_row" of my 
list, It uses gtk_widget_set_state(btn_connect, GTK_STATE_NORMAL);, but 
the button is not enabled, but remains disabled. Could someone tell me 
what is wrong? Are there complete differend functions for my intentions?

THX, TIM