Okay, I solved the problem by myself. It is very easy. I must use the
"AddWithViewport" function of the ScrolledWindow-Class, instead of using
only the "Add" function!
Thomas Zühlke wrote:
Hi *,
i have build a "mini" example for my problem (please see the
attachment). There is a Gkt.Window and it is filled with a
Scrolledwindow. This Scolledwindow is filled with a EventBox and this
EventBox is filled with a Fixed. :-)
If you perform a right-mouse-button-press on the window, a black filled
DrawingArea is created on the Fixed. This DrawingArea can be moved by
holding down left-mouse-button.
The problem is that there should be created scollbars when i move the
DrawingArea out of the windowborder or if i make the window smaller. Is
this possible that there will be scrollbars shown?
Thomas
------------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
using Gtk;
namespace GtkFixed_Scrollbars {
class Program {
static void Main(string[] args) {
Application.Init();
MainWindow hp = new MainWindow("Hallo");
hp.ShowAll();
Application.Run();
}
}
public class MainWindow : Gtk.Window{
public Gtk.Fixed FixedWidget;
public Gtk.EventBox EventBoxWidget;
public List<Gtk.DrawingArea> drawings = new List<DrawingArea>();
private Gdk.GC gc_black;
private double mouse_x,mouse_y;
public MainWindow(string title):base(title){
this.Destroyed += new EventHandler(MainWindow_Destroyed);
this.SetDefaultSize(500, 500);
FixedWidget = new Fixed();
EventBoxWidget = new EventBox();
EventBoxWidget.Events = Gdk.EventMask.AllEventsMask;
EventBoxWidget.ButtonPressEvent += new
ButtonPressEventHandler(event_box_ButtonPressEvent);
// putting all things together
EventBoxWidget.Add(FixedWidget);
Gtk.ScrolledWindow sw = new ScrolledWindow();
sw.Add(EventBoxWidget);
this.Add(sw);
}
void MainWindow_Destroyed(object sender, EventArgs e) {
Application.Quit();
}
private void event_box_ButtonPressEvent(object o, ButtonPressEventArgs
args) {
if (args.Event.Button == 3) {
AddDrawingArea(
FixedWidget,
(int)args.Event.X,
(int)args.Event.Y);
}
}
#region some stupid DrawingArea functions
private void AddDrawingArea(Gtk.Fixed FixedOn, int x, int y) {
MyDA da = new MyDA();
da.SetSizeRequest(30, 30);
da.Events = Gdk.EventMask.AllEventsMask;
da.MotionNotifyEvent += new
MotionNotifyEventHandler(DrawingArea_MotionNotifyEvent);
da.Realized += new EventHandler(DrawingArea_Realized);
da.ExposeEvent += new ExposeEventHandler(DrawingArea_ExposeEvent);
da.ButtonPressEvent += new
ButtonPressEventHandler(DrawingArea_ButtonPressEvent);
da.Position = new Gdk.Point(x, y);
FixedOn.Put(da, x, y);
FixedOn.ShowAll();
}
private void DrawingArea_ButtonPressEvent(object o, ButtonPressEventArgs
args) {
mouse_x = args.Event.X;
mouse_y = args.Event.Y;
}
private void DrawingArea_ExposeEvent(object o, ExposeEventArgs args) {
MyDA da = (MyDA)o;
da.GdkWindow.DrawRectangle(gc_black, true, 0, 0,
da.Allocation.Width, da.Allocation.Height);
}
private void DrawingArea_Realized(object sender, EventArgs e) {
MyDA da = (MyDA)sender;
da.ModifyBase(Gtk.StateType.Normal, new Gdk.Color(0, 0, 0));
gc_black = da.Style.BaseGC(Gtk.StateType.Normal);
}
private void DrawingArea_MotionNotifyEvent(object o,
MotionNotifyEventArgs args) {
MyDA da = (MyDA)o;
Gdk.EventMotion ev = args.Event;
Gdk.ModifierType state;
state = ev.State;
if (state == Gdk.ModifierType.Button1Mask) {
// holding down left mousebutton and moving
double move_x_to = (da.Position.X + ev.X) - mouse_x;
double move_y_to = (da.Position.Y + ev.Y) - mouse_y; ;
da.Position = new Gdk.Point((int)move_x_to, (int)move_y_to);
FixedWidget.Move(da, (int)move_x_to, (int)move_y_to);
}
}
#endregion
}
public class MyDA : Gtk.DrawingArea {
public Gdk.Point Position;
public MyDA() : base() { }
}
}
------------------------------------------------------------------------
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Gtk-sharp-list maillist - [email protected]
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_______________________________________________
Gtk-sharp-list maillist - [email protected]
http://lists.ximian.com/mailman/listinfo/gtk-sharp-list
