On 23.03.2013 15:09, monowiki wrote:
> 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?
>
>
>
> --
> View this message in context:
> http://mono.1490590.n4.nabble.com/Drawingarea-shows-nothing-tp4659137.html
> Sent from the Mono - Gtk# mailing list archive at Nabble.com.
> _______________________________________________
> Gtk-sharp-list maillist - [email protected]
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You're clearing the window after drawing with GdkWindow.Clear(). Try
removing that?
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