1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
#include <stdlib.h>
#include <gtk/gtk.h>
void selection_received( GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data );
/* Signal handler invoked when user clicks on the "Get Targets" button */
void get_targets( GtkWidget *widget,
gpointer data )
{
static GdkAtom targets_atom = GDK_NONE;
/* Get the atom corresponding to the string "TARGETS" */
if (targets_atom == GDK_NONE)
targets_atom = gdk_atom_intern ("TARGETS", FALSE);
/* And request the "TARGETS" target for the primary selection */
gtk_selection_convert (widget, GDK_SELECTION_PRIMARY, targets_atom,
GDK_CURRENT_TIME);
}
/* Signal handler called when the selections owner returns the data */
void selection_received( GtkWidget *widget,
GtkSelectionData *selection_data,
gpointer data )
{
GdkAtom *atoms;
GList *item_list;
int i;
/* **** IMPORTANT **** Check to see if retrieval succeeded */
if (selection_data->length < 0)
{
g_print ("Selection retrieval failed\n");
return;
}
/* Make sure we got the data in the expected form */
if (selection_data->type != GDK_SELECTION_TYPE_ATOM)
{
g_print ("Selection \"TARGETS\" was not returned as atoms!\n");
return;
}
/* Print out the atoms we received */
atoms = (GdkAtom *)selection_data->data;
item_list = NULL;
for (i=0; i<selection_data->length/sizeof(GdkAtom); i++)
{
char *name;
name = gdk_atom_name (atoms[i]);
if (name != NULL)
g_print ("%s\n",name);
else
g_print ("(bad atom)\n");
}
return;
}
int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *button;
gtk_init (&argc, &argv);
/* Create the toplevel window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_title (GTK_WINDOW (window), "Event Box");
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
g_signal_connect (GTK_OBJECT (window), "destroy",
GTK_SIGNAL_FUNC (exit), NULL);
/* Create a button the user can click to get targets */
button = gtk_button_new_with_label ("Get Targets");
gtk_container_add (GTK_CONTAINER (window), button);
g_signal_connect (GTK_OBJECT(button), "clicked",
GTK_SIGNAL_FUNC (get_targets), NULL);
g_signal_connect (GTK_OBJECT(button), "selection_received",
GTK_SIGNAL_FUNC (selection_received), NULL);
gtk_widget_show (button);
gtk_widget_show (window);
gtk_main ();
return 0;
}
|
