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Color and Font Selection Dialogs in C/GTK+ with libglade

March 10th, 2006

In this example code, I show how to use the GtkFontSelectionDialog and the GtkColorSelectionDialog using C/GTK+ and libglade. Both dialogs as well as the main window are in the gui.glade file created by Glade.

The project can be downloaded here: dialogs2.tar.gz

GTK+ Dialogs Example

The code is fairly straight forward and there are comments throughout. The project compiles on my system using:

gcc -o dialogs2 -Wall -g main.c `pkg-config gtk+-2.0 --cflags --libs `-I/usr/include/libglade-2.0 -lglade-2.0

However, you may need to adjust the include path for libglade based on your distribution/installation. The file gui.glade must reside in the same path as the executable.

GTK+ Font Selection Dialog
GtkFontSelectionDialog

GTK+ Color Selection Dialog
GtkColorSelectionDialog

Some notes about the code

gxml = glade_xml_new (GLADE_FILE, "window", NULL);

Rather than passing NULL as the second parameter to glade_xml_new, I'm passing "window". This is the root node-- Only "window" and it's child widgets will be built by libglade. We don't want to build the dialogs until they are needed. Users may never even use the dialogs in a real world application, so why build them?

glade_xml_signal_connect_data (gxml, "on_color_button_clicked", 
                G_CALLBACK(on_color_button_clicked), label);

I'm using glade_xml_signal_connect_data() rather than glade_xml_signal_connect(). This allows me to pass the label widget to the callback function. The callback function can then manipulate that label based on the result of the dialog.


Posted on Friday, March 10th, 2006 at 4:15 pm

Categories
Linux GTK+ C Programming

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