System.Drawing.Graphics

System.Drawing.Graphics

• Terry Rossow

  ohhh sorry, may be I was not well clearly. I can draw everything, the line, the arche, retangle...., everything. But i can't draw a only pixel. Like a DOT ".".
  
  
                                                  .
  
  
                                               This.
  
  i seeking a method what look like this prototype: DrawPixel(pen as System.Drawing.Pen , x as floating, y as floating)
  
  Sorry english is not my firt language. Tank you for the cooperation.
  You can tell me in C++ to.
  
  
  

• Rizzi Davide

  From the docs http://msdn2.microsoft.com/en-us/library/9dtfzwyx(en-US,VS.80).aspx:

  PSet Method

  In Visual Basic 6.0, the PSet method is used to change the color of a pixel on a form or PictureBox control. If the DrawWidth property is set to a value greater than 1, the PSet method draws a filled circle. An optional parameter is used to specify the color; if omitted ForeColor is used.

  In Visual Basic 2005, there is no equivalent for the PSet method. To change the color of a single pixel on a form or the PictureBox control, use the DrawEllipse method to draw a circle with a height and width of 1 pixel. To duplicate the functionality of PSet when DrawWidth is greater than 1, use the FillEllipse method.

  Hope this helps,

  Steve Hoag

  Visual Basic Express

  
  
  

• DataCorrupt

  Well, this should work.  Is your form more than 200 pixels high Try starting at 0,0.
  

  
  
  

• JEROPS

  Hello.

  FillRectangle(brush, new Rectangle(x, y, 1, 1))

  I guess you knew that allready. But this is the best answer I have, unless you want to use P/Invoke or scan lines.

  Hope I am helping.

  
  
  

• Bernard C

  right. but i can't still draw the pixel.
  
  

  Public Class Form1

  Private Sub Panel1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Panel1.Paint

  Panel1.BackColor = Color.White

  e.Graphics.DrawLine(Pens.Blue, 0, 200, 800, 200)

  End Sub

  End Class

  
  

• blkeller

  yes, i made in VB. And this works.
  
  

  Public Class Form1

  Private Sub Panel1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Panel1.Paint

  Dim panelGraphics As System.Drawing.Graphics

  Panel1.BackColor = Color.White

  panelGraphics = Me.Panel1.CreateGraphics()

  panelGraphics.DrawLine(Pens.Blue, 0, 200, 800, 200)

  panelGraphics.Dispose()

  End Sub

  End Class

  
  

• trianta99

  Dim panelGraphics As System.Drawing.Graphics
  
  I repeat : your PaintEventArgs has a Graphics object in it, which you need to use.  You're just drawing into thin air with this code.
  
  
  

• NeedSQLHelp

  I have the same problem. I know in earlier VB 6 and earlier you could use PSet or SetPixel to set a pixel. I think VB.net does not have PSet but I was able to use SetPixel to modify a bitmap but i wasn't able to get it to just draw a pixel without first drawing to a drawing.graphics.bitmap object.

  Obviously, you could draw a really tiny rectangle but that seems a bit stupid doesn't it.

  Could someone with experience tell us if there's a replacement for PSet

  
  

• maui_desu

  How did you try it Your form has a Paint handler, which you can override.  The PaintEventArgs contains a Graphics object.  This is the object you need to use to draw onto your window.
  
  
• System.Drawing.Graphics