Introduction
This example produces a GTK Color Selection Area. It allows the user to choose any color value from a color wheel or by typing in the RGB values.
Source Code
/*
*File name: colorselection.c
*/#include
#include/*– This function allows the program to exit properly when the window is closed –*/
gint destroyapp (GtkWidget *widget, gpointer gdata)
{
g_print (“Quitting…\n”);
gtk_main_quit();
return (FALSE);
}
int main (int argc, char *argv[])
{/*– Declare the GTK Widgets used in the program –*/
GtkWidget *window;
GtkWidget *colorselection;/*–Initialize GTK–*/
gtk_init (&argc, &argv);/*–Create the new window–*/
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);/*–Connect the window to the destroyapp function –*/
gtk_signal_connect(GTK_OBJECT(window), “delete_event”, GTK_SIGNAL_FUNC(destroyapp), NULL);/*–Create a new colorselection widget –*/
colorselection = gtk_color_selection_new();/*— Add colorselection widget to window-*/
gtk_container_add(GTK_CONTAINER (window), colorselection);/*– Add a border to the window to give the button a little room –*/
gtk_container_border_width (GTK_CONTAINER (window), 15);/*– Display the widgets –*/
gtk_widget_show(colorselection);
gtk_widget_show(window);/*– Start the GTK event loop–*/
gtk_main();/*–Return 0 if exit is successful–*/
return 0;}
Compile the Source Code
gcc -Wall -g colorselection.c -o colorselection `gtk-config –cflags` `gtk-config –libs`
Execute the Program
./colorselection
