[Gtk-sharp-list] GnomeCanvas questions

[Jorge García]

Ciao,

it works for me, but I think the other constructor must work too. Maybe
I'm missing anything but I don't know what ...

CanvasGroup group = new CanvasGroup(canvas.Root(),CanvasGroup.GType); 

ui.cs(231) error CS1501: No overload for method `Gnome.CanvasGroup'
takes `2' arguments

Thaks,

Jorge






On dc, 2004-04-28 at 16:56, Owen Fraser-Green wrote:
> Hi,
> 
> There's a public constructor missing from CanvasGroup. The attached
> patch adds one so you can do, for example:
> 
> CanvasGroup group = new CanvasGroup(canvas.Root());
> 
> OK to commit?
> 
> Cheers,
> Owen
> 
> On Mon, 2004-04-26 at 19:41, Jorge García wrote:
> > Hi,
> > 
> > does someone know how is the best method for declare a CanvasGroup?
> > 
> > With this sentence I get the following error:
> > CanvasGroup group = new CanvasGroup(canvas.Root(),CanvasGroup.GType);		
> > 
> > ui.cs(196) error CS1501: No overload for method `Gnome.CanvasGroup'
> > takes `2' arguments
> > 
> > But if I make like samples/Fifteen.cs example and I define a subclass of
> > CanvasGroup then it works:
> > 
> > MyGroup group = new MyGroup(canvas.Root());
> > 
> > ...
> > 
> > public class MyGroup: Gnome.CanvasGroup{
> > 		public MyGroup (CanvasGroup group)
> > 			: base (group, CanvasGroup.GType)
> > 			{
> > 				
> > 			}
> > }
> > 
> > 
> > 
> > Another question that I have is how to write lines fast. I use this
> > function (ported from George Lebl's DeveloperWorks article):
> > 
> > void DrawALine(CanvasGroup group,double x1, double y1, double x2, double
> > y2, string color){
> > 
> > 	double[] coords = {x1, y1, x2, y2};
> > 	/* allocate a new points array */
> > 	CanvasPoints points = new CanvasPoints(coords);
> > 
> > 	/* draw the line */
> > 	CanvasLine item = new CanvasLine(group);
> > 	item.Points = points;
> > 	item.FillColor = color;
> > 	item.WidthUnits = 1.0;
> > 	item.CanvasEvent += new Gnome.CanvasEventHandler (Item_Event);
> > }
> > 
> > The problem with this function is that each time that it calls to
> > "new CanvasPoints(coords)" the coordinates are showed by the console,
> > and its makes veeeery slow my program (that uses thousands of lines)
> > 
> > 
> > Thank you very much in advance,
> > 
> > Jorge
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > _______________________________________________
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