Hey,

I am currently working on drawing out wire diagrams , I get all the co-ordinates from another program and simply draw them out in a picture box.

vb.net Code:
  1. Private Sub test(Optional mark As Boolean = False)

  2.  
  3.         Dim Img As New Bitmap(PictureBox1.Width, PictureBox1.Height)

  4.  
  5.         Dim g As Graphics = Graphics.FromImage(Img)

  6.  
  7.         g.Clear(Color.White)

  8.  
  9.         Dim graphiccounter As Integer = 0

  10.      

  11.         Dim result As Object

  12.         'Needed to get co-ordinates 

  13.         Dim x() As Object

  14.         Dim y() As Object

  15.         Dim z() As Object

  16.         Dim results As Object

  17.  
  18.         'Will take in x and y values from objects above

  19.         Dim x_loc(0) As Integer

  20.         Dim y_loc(0) As Integer

  21.  
  22.  
  23.          _Paths.Clear()

  24.         namepath.Clear()

  25.  
  26.         For Each row As DataGridViewRow In DataGridView2.Rows

  27.  
  28.             If row.Visible = True Then

  29.                 'sets variables to nothing, needed in order to run certain commands

  30.                 results = Nothing

  31.                 x = Nothing

  32.                 y = Nothing

  33.                 z = Nothing

  34.  
  35.               

  36.  
  37.                 'get the co-ordinates and stores them in x,y,z. results will contain the number of co-ordinates stored.

  38.                 result = cor.GetPath(x, y, z)

  39.                 

  40.                 're declares variables based on how many co-ordinates

  41.                 ReDim x_loc(result)

  42.                 ReDim y_loc(result)

  43.  
  44.  
  45.          

  46.                 counter = 1

  47.  
  48.                 _Paths.Add(New GraphicsPath)

  49.                 namepath.Add(New NamedPath)

  50.                 For k = 1 To result - 1

  51.  
  52.                     x_loc(k) = (x(k))

  53.                     y_loc(k) = PictureBox1.Height - (y(k))

  54.                     x_loc(k + 1) = (x(k + 1))

  55.                     y_loc(k + 1) = PictureBox1.Height - (y(k + 1)) 

  56.                     spacer += 5

  57.  
  58.                    

  59.                         _Paths(graphiccounter).AddLine(x_loc(k), y_loc(k), x_loc(k + 1), y_loc(k + 1))

  60.                         namepath(graphiccounter).Name = row.Cells("Core_Id").Value

  61.                         namepath(graphiccounter).Path = _Paths(graphiccounter)

  62.                         'g.FillEllipse(Brushes.Black, x_loc(k + 1) - 4, y_loc(k + 1) - 4, 8, 8)

  63.  
  64.                         counter = counter + 1

  65.           

  66.  
  67.                 Next

  68.  
  69.  
  70.                 _Pen = New Pen(Brushes.HotPink, 5)

  71.                 g.DrawPath(_Pen, namepath(graphiccounter).Path)

  72.                 graphiccounter += 1

  73.  
  74.  
  75.                 '  Console.WriteLine("New Line")

  76.             End If

  77.         Next

  78.      

  79.         PictureBox1.SizeMode = PictureBoxSizeMode.AutoSize

  80.         PictureBox1.Image = Img

  81.  
  82.     End Sub

So that is my code, some of the code may look funky, but that is because I am using a COM object and Windows Script Host Model.

The results I get back in x and y and co-ordinates based on the other program's co-ordinates. Ofcourse it is easy for me to adjust the co-ordinates so that it works on my screen but how would I go about drawing it so that the image automatically redraws to size based on the window?

Is it possible to set the co-ordinate system of the GDI graphics? For example a setting to tell windows that every 10 points is just 1.

so for the picture box of height 100x100. The co-ordinates start at 0 and go to 400, making each point in the picturebox actually 0.25.

I am looking around for answer but any suggestions is appreciated