Introduction
The GtkArrow widget draws allows triangular arrows to be drawn on the screen. They can face north, west, south, and east and can be shaded in a variety of ways.
Source Code
/*
*File name: arrow.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 *arrow1;
GtkWidget *arrow2;
GtkWidget *arrow3;
GtkWidget *arrow4;
GtkWidget *hbox;/*– Initialize GTK –*/
gtk_init (&argc, &argv);/*– Create the new window –*/
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);/*– Create the hbox –*/
hbox = gtk_hbox_new(FALSE, 0);/*– Create the arrow with a label –*/
arrow1 = gtk_arrow_new(GTK_ARROW_UP, GTK_SHADOW_OUT);
arrow2 = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
arrow3 = gtk_arrow_new(GTK_ARROW_LEFT, GTK_SHADOW_OUT);
arrow4 = gtk_arrow_new(GTK_ARROW_RIGHT, GTK_SHADOW_OUT);/*– Connect the window to the destroyapp function –*/
gtk_signal_connect(GTK_OBJECT(window), “delete_event”, GTK_SIGNAL_FUNC(destroyapp), NULL);/*– Pack all the radio buttons into the hbox –*/
gtk_box_pack_start(GTK_BOX(hbox), arrow1, FALSE, FALSE, 15);
gtk_box_pack_start(GTK_BOX(hbox), arrow2, FALSE, FALSE, 15);
gtk_box_pack_start(GTK_BOX(hbox), arrow3, FALSE, FALSE, 15);
gtk_box_pack_start(GTK_BOX(hbox), arrow4, FALSE, FALSE, 15);/*– Add the hbox to the window –*/
gtk_container_add(GTK_CONTAINER(window), hbox);/*– 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(arrow1);
gtk_widget_show(arrow2);
gtk_widget_show(arrow3);
gtk_widget_show(arrow4);
gtk_widget_show(hbox);
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 arrow.c -o arrow `gtk-config –cflags` `gtk-config –libs`
Execute the Program
./arrow
