Hi List,
I have problems with triggering several TreeView signals. I know that
many widgets don't receive lots of signals by default. I tried to
change that behaviour by manipulatating the event mask using:
tv.Events = EventMask.AllEventsMask; or
tv.AddEvents((int)EventMask.ButtonPressMask);
but none of them worked.
I've modified the GTK# ManagedTreeViewDemo.cs example to try this out
and demonstrate this problem.
ButtonReleaseEvent triggers, but ButtonPressEvent doesn't, even after
manipulating the event mask. I've both attached and included the code
here.
----8<----
// ManagedTreeViewDemo.cs - Another TreeView demo
//
// Author: Rachel Hestilow <[EMAIL PROTECTED]>
//
// (c) 2003 Rachel Hestilow
namespace GtkSamples {
using System;
using System.Runtime.InteropServices;
using Gtk;
using Gdk;
public class TreeViewDemo {
private static ListStore store = null;
private class Pair {
public string a, b;
public Pair (string a, string b) {
this.a = a;
this.b = b;
}
}
private static void PopulateStore ()
{
store = new ListStore (typeof (Pair));
string[] combs = {"foo", "bar", "baz", "quux"};
foreach (string a in combs) {
foreach (string b in combs) {
store.AppendValues (new Pair (a, b));
}
}
}
private static void CellDataA (Gtk.TreeViewColumn tree_column,
Gtk.CellRenderer cell, Gtk.TreeModel tree_model, Gtk.TreeIter iter)
{
Pair val = (Pair) store.GetValue (iter, 0);
((CellRendererText) cell).Text = val.a;
}
private static void CellDataB (Gtk.TreeViewColumn tree_column,
Gtk.CellRenderer cell, Gtk.TreeModel tree_model, Gtk.TreeIter iter)
{
Pair val = (Pair) store.GetValue (iter, 0);
((CellRendererText) cell).Text = val.b;
}
public static void Main (string[] args)
{
Application.Init ();
PopulateStore ();
Gtk.Window win = new Gtk.Window ("TreeView demo");
win.DeleteEvent += new DeleteEventHandler (DeleteCB);
win.DefaultWidth = 320;
win.DefaultHeight = 480;
ScrolledWindow sw = new ScrolledWindow ();
win.Add (sw);
TreeView tv = new TreeView (store);
//tv.Events = EventMask.AllEventsMask;
//tv.AddEvents((int)EventMask.ButtonPressMask);
tv.ButtonPressEvent += new
ButtonPressEventHandler(OnButtonPressEvent);
tv.ButtonReleaseEvent += new
ButtonReleaseEventHandler(OnButtonReleaseEvent);
tv.HeadersVisible = true;
tv.AppendColumn ("One", new CellRendererText (), new
TreeCellDataFunc (CellDataA));
tv.AppendColumn ("Two", new CellRendererText (), new
TreeCellDataFunc (CellDataB));
sw.Add (tv);
win.ShowAll ();
Application.Run ();
}
public static void OnButtonPressEvent(object o,
ButtonPressEventArgs args)
{
Console.WriteLine("Button pressed.");
}
public static void OnButtonReleaseEvent(object o,
ButtonReleaseEventArgs args)
{
Console.WriteLine("Button released.");
}
private static void DeleteCB (System.Object o, DeleteEventArgs
args)
{
Application.Quit ();
}
}
}
----8<----
Anyone could drop some knowledge on this issue?
Thanks in advance!
--
Laci
Blog: http://monda.hu/~laci/blog
Home: http://mondalaci.objectis.net
// ManagedTreeViewDemo.cs - Another TreeView demo
//
// Author: Rachel Hestilow <[EMAIL PROTECTED]>
//
// (c) 2003 Rachel Hestilow
namespace GtkSamples {
using System;
using System.Runtime.InteropServices;
using Gtk;
using Gdk;
public class TreeViewDemo {
private static ListStore store = null;
private class Pair {
public string a, b;
public Pair (string a, string b) {
this.a = a;
this.b = b;
}
}
private static void PopulateStore ()
{
store = new ListStore (typeof (Pair));
string[] combs = {"foo", "bar", "baz", "quux"};
foreach (string a in combs) {
foreach (string b in combs) {
store.AppendValues (new Pair (a, b));
}
}
}
private static void CellDataA (Gtk.TreeViewColumn tree_column, Gtk.CellRenderer cell, Gtk.TreeModel tree_model, Gtk.TreeIter iter)
{
Pair val = (Pair) store.GetValue (iter, 0);
((CellRendererText) cell).Text = val.a;
}
private static void CellDataB (Gtk.TreeViewColumn tree_column, Gtk.CellRenderer cell, Gtk.TreeModel tree_model, Gtk.TreeIter iter)
{
Pair val = (Pair) store.GetValue (iter, 0);
((CellRendererText) cell).Text = val.b;
}
public static void Main (string[] args)
{
Application.Init ();
PopulateStore ();
Gtk.Window win = new Gtk.Window ("TreeView demo");
win.DeleteEvent += new DeleteEventHandler (DeleteCB);
win.DefaultWidth = 320;
win.DefaultHeight = 480;
ScrolledWindow sw = new ScrolledWindow ();
win.Add (sw);
TreeView tv = new TreeView (store);
//tv.Events = EventMask.AllEventsMask;
//tv.AddEvents((int)EventMask.ButtonPressMask);
tv.ButtonPressEvent += new ButtonPressEventHandler(OnButtonPressEvent);
tv.ButtonReleaseEvent += new ButtonReleaseEventHandler(OnButtonReleaseEvent);
tv.HeadersVisible = true;
tv.AppendColumn ("One", new CellRendererText (), new TreeCellDataFunc (CellDataA));
tv.AppendColumn ("Two", new CellRendererText (), new TreeCellDataFunc (CellDataB));
sw.Add (tv);
win.ShowAll ();
Application.Run ();
}
public static void OnButtonPressEvent(object o, ButtonPressEventArgs args)
{
Console.WriteLine("Button pressed.");
}
public static void OnButtonReleaseEvent(object o, ButtonReleaseEventArgs args)
{
Console.WriteLine("Button released.");
}
private static void DeleteCB (System.Object o, DeleteEventArgs args)
{
Application.Quit ();
}
}
}
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