<?php
/**
*   Bug in drag'n'drop:
*   Drag from "from" button to "to" button.
*   You will get a segfault.
*
*   Backtrace for the segfault:
-------------------------
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 16384 (LWP 20870)]
0xb7c5b203 in strlen () from /lib/libc.so.6
(gdb) bt
#0  0xb7c5b203 in strlen () from /lib/libc.so.6
#1  0xb75dbcbd in phpg_GtkSelectionData_read_type (object=0x8eb03ec,
    return_value=0xbf8f3cf0) at gen_gtk.c:45552
#2  0xb75ff86b in phpg_get_properties (object=0x8d9bb74)
    at /data/cvs/phpgtk2/php-gtk/main/phpg_support.c:173
#3  0x082c852b in php_var_dump (struc=0x87d1e64, level=1)
    at /data/cvs/php/php-5.1.2/ext/standard/var.c:139
#4  0x082c8736 in zif_var_dump (ht=1, return_value=0x8da9a74,
    return_value_ptr=0x0, this_ptr=0x0, return_value_used=0)
    at /data/cvs/php/php-5.1.2/ext/standard/var.c:192
#5  0x0834a906 in zend_do_fcall_common_helper_SPEC (execute_data=0xbf8f3e20)
    at zend_vm_execute.h:192
#6  0x0834a218 in execute (op_array=0x8d95078) at zend_vm_execute.h:92
#7  0x08328339 in zend_call_function (fci=0xbf8f3f50, fci_cache=0x0)
    at /data/cvs/php/php-5.1.2/Zend/zend_execute_API.c:907
#8  0x08327bae in call_user_function_ex (function_table=0x0, object_pp=0x0,
    function_name=0x0, retval_ptr_ptr=0x0, param_count=0, params=0x0,
    no_separation=0, symbol_table=0x0)
    at /data/cvs/php/php-5.1.2/Zend/zend_execute_API.c:571
#9  0xb7605a8a in phpg_closure_marshal (closure=0x8da9b50, return_value=0x0,
    n_param_values=5, param_values=0xbf8f4210, invocation_hint=0xbf8f40f8,
    marshal_data=0x0) at /data/cvs/phpgtk2/php-gtk/main/phpg_closure.c:124
#10 0xb6fe330e in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
-------------------------
*/
$wnd = new GtkWindow();
$wnd->connect_simple('destroy', array('Gtk', 'main_quit'));
$hbox = new GtkHBox();
$wnd->add($hbox);

$btnFrom = new GtkButton('From');
$btnTo   = new GtkButton('To');

$hbox->pack_start($btnFrom);
$hbox->pack_start($btnTo);

$btnFrom->drag_source_set(
    Gdk::BUTTON1_MASK,
    //change to text/plain, and it works
    array(array('text/xml', 0, 1)),
    Gdk::ACTION_COPY | Gdk::ACTION_MOVE
);
$btnFrom->connect('drag-data-get', 'onGetDragData');


$btnTo->drag_dest_set(
    Gtk::DEST_DEFAULT_ALL,
    //change to text/plain, and it works
    array(array('text/xml', 0, 1)),
    Gdk::ACTION_COPY | Gdk::ACTION_MOVE
);

function onGetDragData($widget, $context, $selection, $info, $time) {
    var_dump($selection);
}


$wnd->show_all();
Gtk::main();
?>