gtk+ 2.x How to use lookup_widget ??

johnnyde · 02-10-2005, 07:46 AM

hi
we are trying to build interface for existing c appliation. gtk interface was choosen. but the problem is accessing the widgets . there is a function void message() which is need to display a message in a text box "entry1". the function is buried deep inthe code . Like in a onclick event a function is called and there is a large chain of calling function and finally void message is called. how to put the text in "entry1"
thanks in advance
johnny

Mara · 02-11-2005, 05:25 PM

You need to have the parent widget of the entry. It means, the dialog or window. If you're using Glade (or you're doing the same on your own), all widgets of that dialog are connected with it and can be accessed using lookup_widget. The call looks this way:

Code:

GtkWidget *entry;
entry = lookup_widget(parent_widget,"entry1");

Now you have the entry and can put text inside.

johnnyde · 02-14-2005, 11:41 AM

The code is deep inside some file. So how should i be passing the pointer for the widget or the pointer.
I am not able the access the widget even if i pass the pointer to the widget.

can u sugget some links that actually edal with subjects like this

Mara · 02-14-2005, 03:08 PM

If you program in GTK in C you need to deal with the pointers yourself. If you use C++ version, it's different.

My preferred solution for GTK with C is to have windows (only windows, not all widgets) as global variables. If you plan to have only one copy of every window open at one time it works nicely.

johnnyde · 02-15-2005, 10:59 AM

Thanks
i am using global pointers. and it is working . thanks for the guidelines.
Thanks
Johnny