I'd like to stroke on Drawingarea using Cairo.
My code worked, but it shows nothing.
Next code I created is to draw a line on the drawingarea.
--------------code---------------------
using System;
using Gtk;
public partial class MainWindow: Gtk.Window
{
public MainWindow (): base (Gtk.WindowType.Toplevel)
{
Build ();
//this.GdkWindow.KeepBelow=true;
}
protected void OnDeleteEvent (object sender, DeleteEventArgs a)
{
Application.Quit ();
a.RetVal = true;
}
protected void OnExposeEvent (object o, Gtk.ExposeEventArgs args)
{
//da:DrawingArea
Cairo.Context cxt = Gdk.CairoHelper.Create(da.GdkWindow);
cxt.LineWidth=30.0;
cxt.SetSourceRGB(1.0,0.5,0.0);
cxt.LineCap=Cairo.LineCap.Butt;
cxt.MoveTo (40,50);
cxt.LineTo(250,50);
cxt.Stroke();
this.GdkWindow.Clear ();
}
}
-----------------code------------------
<http://mono.1490590.n4.nabble.com/file/n4659137/da_shows_nothing.png>
A red line should be drawn on this window...
Any ideas?
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