how to fill color to the rectangle stroke ?

Question

hi every body!

i have a rectangle stroke and i wanna fill it! how? here is the code:

StylusPointCollection pts = new StylusPointCollection();

pts.Add(new StylusPoint(mouseLeftDownPoint.X, mouseLeftDownPoint.Y));

pts.Add(new StylusPoint(mouseLeftDownPoint.X, currentPoint.Y));

pts.Add(new StylusPoint(currentPoint.X, currentPoint.Y));

pts.Add(new StylusPoint(currentPoint.X, mouseLeftDownPoint.Y));

pts.Add(new StylusPoint(mouseLeftDownPoint.X, mouseLeftDownPoint.Y));

if (st != null)
  inkCanvas.Strokes.Remove(st);

st = new Stroke(pts);


st.DrawingAttributes.Color = Colors.Red;
inkCanvas.Strokes.Add(st);

thank u!

Answer 1

try this way with rectangle

http://www.c-sharpcorner.com/UploadFile/raj1979/WPFRectangle08282008234151PM/WPFRectangle.aspx

Answer 2

thank you amir but my problem is not about rectangle! i am using stroke because i wanna have complex shapes. i wanna create shapes just like win 7 paint, star, clouds, .....! you got that? but i know my question was not clear enough. sorry.

Answer 3

shouldnt you use polyline or path instead of strokes?

---

Kenneth

Answer 4

hi guy!

I think this isn't a better way to build complex sharp by rect stroke, so I suggest using Path,  whatever complex sharp you can finnish by Path control!

hope that help you !

Answer 5

hi 4k.hrh!

I checked out path before but the problem is when you select it and resize it just the path control will resize, and the shape in there will not resize! i wonder if you had any solution about path!

thank you all guys!

Answer 6

Hi moosavi,

If you do not want to use Path or other shapes, I suggest you can create a custom Stroke inherits from Stroke class and override the DrawCore method. Below is my Stroke class which can draw a Rectangle filled by brush.

 public class customStroke : Stroke
 {
  public customStroke(StylusPointCollection pts)
   : base(pts)
  {
   this.StylusPoints = pts;
  }

  protected override void DrawCore(DrawingContext drawingContext, DrawingAttributes drawingAttributes)
  {
   if (drawingContext == null)
   {
    throw new ArgumentNullException("drawingContext");
   }
   if (null == drawingAttributes)
   {
    throw new ArgumentNullException("drawingAttributes");
   }
   DrawingAttributes originalDa = drawingAttributes.Clone();
   SolidColorBrush brush2 = new SolidColorBrush(drawingAttributes.Color);
   brush2.Freeze();
   drawingContext.DrawRectangle(brush2, null, new Rect(GetTheLeftTopPoint(), GetTheRightBottomPoint()));
  }

  Point GetTheLeftTopPoint()
  {
   if (this.StylusPoints == null)
    throw new ArgumentNullException("StylusPoints");
   StylusPoint tmpPoint=new StylusPoint(double.MaxValue,double.MaxValue);
   foreach (StylusPoint point in this.StylusPoints)
   {
    if ((point.X < tmpPoint.X) || (point.Y < tmpPoint.Y))
     tmpPoint = point;
   }
   return tmpPoint.ToPoint();
  }

  Point GetTheRightBottomPoint()
  {
   if (this.StylusPoints == null)
    throw new ArgumentNullException("StylusPoints");
   StylusPoint tmpPoint = new StylusPoint(0, 0);
   foreach (StylusPoint point in this.StylusPoints)
   {
    if ((point.X > tmpPoint.X) || (point.Y > tmpPoint.Y))
     tmpPoint = point;
   }
   return tmpPoint.ToPoint();
  }
 }

 

Hope this helps.

Sincerely,

Bob Bao

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Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 7

your right!

but i have a problem with path witch if it solve path is really perfect for me!

i wanted add a path that just contain one object and when i select and resize it the inside object resize. but now the path will resize and the child object have position in there and will not resize!

Answer 8

i found it!

path is the best answer!

myPath.Stretch = Stretch.Fill;

with this property i have a path object that will resize perfectly!

thank you all guys!

 

Answer 9

Hi moosavi.amir

                 I met the same problem as you ,  i appreciate it if you give your dome to me ...

             

Sincerely

                                 elegantluo

Answer 10

Hi Bob Bao ,

               i am  a newer in wpf , but i meet the same problem  above ，could you give a dome .

thank you

Sincerely

                     elegantluo

Answer 11

DEMO is here: http://cid-51b2fdd068799d15.office.live.com/self.aspx/.Public/Samples%5E_2011/20110614%5E_CustomStrokeForInkCanvas.zip

---

Bob Bao [MSFT]
MSDN Community Support | Feedback to us
Get or Request Code Sample from Microsoft
Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Answer 12

Dear All

I've downloaded the above demo app. Thanks for the demo.

After I draw the rectangle in the Inkcanvas with the above code and try to erase it with the code

this.myInkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint; ( "myInkCanvas" is the name of my InkCanvas)

Erase functionality is not happening as expected. I want to erase just the points where my eraser moves.

Any help please.

Thanks

---

Murali Mahendra Banala