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svn path=/trunk/gtk-sharp/; revision=43627
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Miguel de Icaza 2005-04-26 21:45:19 +00:00
parent 01b62e8572
commit a49ba2d3a1
1 changed files with 34 additions and 3 deletions
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doc/en/Gtk.DotNet/Graphics.xml
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@ -28,11 +28,42 @@
<Parameter Name="drawable" Type="Gdk.Drawable" /> <Parameter Name="drawable" Type="Gdk.Drawable" />
</Parameters> </Parameters>
<Docs> <Docs>
<summary>Gets a Graphics context for a drawable.</summary> <summary>Gets a <see cref="T:System.Drawing.Graphics" /> context for a <see cref="T:Gdk.Drawable" /></summary>
<param name="drawable">a <see cref="T:Gdk.Drawable" /></param> <param name="drawable">a <see cref="T:Gdk.Drawable" /></param>
<returns>a <see cref="T:System.Drawing.Graphics" /></returns> <returns>a <see cref="T:System.Drawing.Graphics" /></returns>
<remarks /> <remarks>Use this method to obtain a System.Drawing.Graphics context from a Gtk drawable.
<para>
Both pixmaps (<see cref="T:Gdk.Pixmap" />) and windows (<see cref="T:Gdk.Window" />) are drawables (<see cref="T:Gdk.Drawable" />).
</para><para>
The following example shows how to create a custom widget that renders a mesh. This example overrides the OnExposeEvent method and uses <see cref="N:System.Drawing" /> calls to do the actual drawing:
</para><example>
<code lang="C#">
using System.Drawing;
using Gtk;
class PrettyGraphic : DrawingArea {
public PrettyGraphic ()
{
SetSizeRequest (200, 200);
}
protected override bool OnExposeEvent (Gdk.EventExpose args)
{
using (Graphics g = Gtk.DotNet.Graphics.FromDrawable (args.Window)){
Pen p = new Pen (Color.Blue, 1.0f);
for (int i = 0; i &lt; 600; i += 60)
for (int j = 0; j &lt; 600; j += 60)
g.DrawLine (p, i, 0, 0, j);
}
return true;
}
}
</code>
</example></remarks>
</Docs> </Docs>
</Member> </Member>
</Members> </Members>
</Type> </Type>