I have run into a problem with a GtkTreeView.  A small demonstration
program is included below.

I have a GtkTreeView which is reorderable.  I have attached a function
to the row_activated signal that pops up a dialog.  When the dialog is
closed and the mouse re-enteres the TreeView, it behaves as if a drag
has been initated to reorder the entries of the view.

I have tried running the dialog from an idle function, and it makes no
difference.  Apparently the idle function gets to run before the button
release is sent to the TreeView, enticing the view to think a draw has been
initiated.

I have also tried with a timeout, and it seems to work if the timeout is
on the order of 100ms, but that is going to be dependent on computer
speed and load.

Also it doesn't matter if the dialog is modal or not.

On a side note, the rows-reordered does not appear to be emitted on the
model when the view is reordered.

This is with gtk+ 2.2.1 from Debian testing/unstable.

Demonstration program:
------------------------------------------------------------------------
#include <gtk/gtk.h>
#include <stdio.h>

enum {STRING_COLUMN=0};

static GtkTreeModel * FillStore(void) {
    GtkTreeModel *result = GTK_TREE_MODEL(gtk_list_store_new(1,
G_TYPE_STRING));
    GtkTreeIter iter;
    char tmp[4];
    int i;

    for (i=0; i<50; i+=5){
        snprintf((char*)tmp, 4, "%d", i);
        gtk_list_store_append(GTK_LIST_STORE(result), &iter);
        gtk_list_store_set(GTK_LIST_STORE(result), &iter,
                           STRING_COLUMN, tmp, -1);
    } return result;
}

void callback(GtkTreeModel *treemodel, GtkTreePath *arg1, GtkTreeIter
*arg2, gpointer arg3, gpointer user_data) {
    printf("Callback\n");
}

void activate(GtkTreeView *tree_view, gpointer user_data) {
    GtkWidget *dialog = gtk_dialog_new_with_buttons ("My dialog",
                                                     NULL,
                                                     GTK_DIALOG_MODAL,
                                                     GTK_STOCK_OK,
                                                     GTK_RESPONSE_ACCEPT,
                                                     GTK_STOCK_CANCEL,
                                                     GTK_RESPONSE_REJECT,
                                                     NULL);
    gint result = gtk_dialog_run (GTK_DIALOG (dialog));
    switch (result)
    {
    case GTK_RESPONSE_ACCEPT:
        printf("DIALOG Accept\n");
        break;
    default:
        printf("DIALOG Cancel\n");
        break;
    }
    gtk_widget_destroy (dialog);
}


int main (int argc, char *argv[]) {
    GtkWidget *window = NULL;
    GtkWidget *tree_view = NULL;
    GtkWidget *vb = NULL;
    GtkWidget *sw = NULL;
    GtkCellRenderer *renderer = NULL;
    GtkTreeViewColumn *column = NULL;
    GtkTreeModel * model;

    gtk_init(&argc, &argv);

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_widget_set_size_request(window, 150, 200);
    vb = gtk_vbox_new (FALSE, 8);
    gtk_container_add (GTK_CONTAINER (window), vb);
    sw = gtk_scrolled_window_new (NULL, NULL);
    gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (sw),
GTK_SHADOW_ETCHED_IN);
    gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
    gtk_box_pack_start (GTK_BOX (vb), sw, TRUE, TRUE, 0);


    model = FillStore ();
    tree_view=gtk_tree_view_new_with_model(model);
    g_signal_connect (G_OBJECT (tree_view), "row_activated", G_CALLBACK
(activate), NULL);

    gtk_tree_view_set_reorderable (GTK_TREE_VIEW(tree_view), TRUE);
    g_signal_connect (G_OBJECT (model), "rows-reordered", G_CALLBACK
(callback), NULL);

    // gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(tree_view), 0);
    gtk_container_set_border_width(GTK_CONTAINER(window), 3);
    gtk_container_add(GTK_CONTAINER(sw), tree_view);

    renderer = gtk_cell_renderer_text_new();
    column = gtk_tree_view_column_new_with_attributes ("Some numbers",
renderer, "text",
                                                       STRING_COLUMN, NULL);
    gtk_tree_view_append_column(GTK_TREE_VIEW(tree_view), column);

    gtk_widget_show_all(window);
    gtk_main();
    return 0;

}


------------------------------------------------------------------------