I'm trying to draw a partial circle with GraphicsPath, starting at the top of the document, going counter-clockwise 270 degrees, so that it will look like a clock at 3 o'clock. The following is a simple, partial translation of my function.
Dim DestImage As New Bitmap(Source.Width, Source.Height)
Dim g As Graphics = Graphics.FromImage(DestImage)
Dim gp As New GraphicsPath()
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changing the text alignment property. If I change it from left, center to right, you can see all three remain painted. It's as though nothing is being cleared before the next draw.(A screen shot of this is also attached)My best guess is it's the ControlStyles.Opaque(only thing I've changed between when it worked, and when I started to notice it wasn't)... But unfortunately I need this particular style for the transparency effect I'm looking for.
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can i have codes of drawing a circle using visual basic 2005
View 3 RepliesI'm trying to draw some kind of circle diagram. Input data are only two integers: "a" (even or odd) and "b" (even). Here is the
HTML Imports System.Drawing.Drawing2D
Public Class Form1
Dim P As New Pen(Brushes.Red, 1)
Dim a As Integer = 24
Dim b As Integer = 2
Dim Angle As Single = b / a * Math.PI
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I am drawing a circle, of let's say 300 pixels diameter. I want to draw a triangle, with the top of it being at New Point(diameter / 2, 0). How could I get the other 2 points of the triangle? If possible, how could i get the 3 points of a triangle rotated by x degrees?
View 1 RepliesI have developed a program which continuously draws a circle using a timer. Now every time the circle gets displays it flickers and which is because i have used me.refresh. Is there any other way to avoid this flickering.
Here is my code
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As EventArgs) Handles Timer1.Tick
Me.sweepAngle += 1
If Me.sweepAngle = 360 Then
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Is there anyway to find out if a graphicspath contains a point like you can with the rectangle object etc?
View 4 Repliesis it possible to detect overlapping Graphicspath? I have e.g 200 different Graphicspaths created, and I want to filter out which one overlap...
View 10 RepliesThis is my problem...I have created graphicspaths (gp) in Visual Basic...but every gp has a name. So I want to print every name next to the gp. I use GetBounds to get the nearest rectangle around the gp. But like for a circle the name will be quite far away from the gp. Now I want to draw a line from the name to the outline of the gp...can somebody help me with this little part of script?
View 11 RepliesIm currently in the mid of making a drawing project , and part of it is free drawing using Graphicspath object
now drawing is ok,moving or dragging the drawn path is done using System.Drawing.Drawing2D.Matrix but the problem is using System.Drawing.Drawing2D.Matrix object to scale the graphicspath object results into scaling and moving the drawn graphicspath on the same time ..
any resizing method code is listed below
Public Overrides Sub ResizeShape()
Dim Sqrt As RectangleF = GetBounds()
Dim Dx As Integer = MoveResizeEnd.X - MoveResizeBegin.X
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I need to calculate a couple of lengths and an angle, so basic trig. Embarrassingly I can't remember enough of my school trig to sort this out in my head.
Here's the problem pictorially, I need to calculate the two variables in red text (with light blue background) where Radius can anything between 1 and "r.Height /2" and r.Width can be anything between >0 and Radius.
The only other thing I can tell you is ther total width of the dark blue rectangle and the % of that width that r.Width represents - I didn't include it in the picture since it didn't seem relevant.
Ultimately I am trying to create a rectangle to use with GraphicsPath.AddArc.
I have written a simple program which receive data from serial port i.e (temperature) and display on a line graph. but i require accumlate the graph data upto 10 minutes on screen. after that it again accumlate next 10 minutes data.[code]....
View 1 Repliesdraw individual pixels, without resorting to drawing a line and setting it's length to 1. Is there an actual ability to draw a pixel that is just 1 pixel big?
View 2 RepliesI need some code to draw a resizable, draggable rectangular cursor (or selection box) on a picturebox. I found some excellent code (albeit rather old) that does just that, but on a form rather than a picturebox. I have tried converting the code - basically moving things to the picturebox events (Paint, MouseDown, MouseMove etc). It nearly works but leaves a trail behind it when you move or resize the cursor. In other words, the selection rectangle is not being erased before being drawn in the new position.
Is there some fundamental difference between drawing graphics on a form and drawing on a picturebox that would cause this behaviour? Something like, when you invalidate a form and cause a redraw it erases what you did last? If not, then I just need to dig a bit further and work out how the cursor is being erased from the previous position.
Here's the original code that works fine on a form:
Private DragRect As New RectangleF(20, 20, 100, 80)
Private Adornments(7) As RectangleF
Private MouseInRect As Boolean = False
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Say I have 3 Buttons, labelled: Unit 1, Unit 2 and Unit 3. When I click on any button I want a drawing of that unit to appear on screen at a pre-specified starting point. Thereafter when I press any other one of the buttons the unit drawings appear alongside each other in a line. So I could end up with:
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With this line...
If PictureBox1.Image = My.Resources._2star Then
I get this error: Operator '=' is not defined for types 'System.Drawing.Image' and 'System.Drawing.Bitmap'.Is there another way to say = with images?
Is it possible to convert an object form System.Drawing.Graphics to System.Drawing.Image?
View 4 RepliesHere is my favicon code
Dim oURL As Uri = New Uri(e.Uri.AbsoluteUri)
Dim favicon As Image
If oURL.HostNameType = UriHostNameType.Dns Then
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The error is Value of type System.Drawing.Image cannot be converted to System.Drawing.Icon Is it even possible to make the favicon be the icon of the form?
im using an MDI parent form and MDI Child. how can i print the image that's inside a picture box that's inside the Child from a button that's on the Parent?when i try to use print preview or print dialog, i can't get it to recognize that the document is the picure inside the picture box. i've looked up this error message:Value of type 'System.Drawing.Image' cannot be converted to 'System.Drawing.Printing.PrintDocument'.[code]
View 6 RepliesI am making a web browser using geckofx. I have put the favicon in a picture box but I have changed my mind and now I want it as the form's icon. The code for the favicon is:[code...]
The favicon works fine in the picture box but i think it will look better as an icon. If i change the line Me.PictureBox1.Image = favicon to Form1.icon = favicon I get the error Value of type 'System.Drawing.Image' cannot be converted to 'System.Drawing.Icon'. How can I get this to work?
I have a System.Drawing.Graphics g, which draw something in a PictureBox. Now I want to export this pGraphics to a new System.DrawingImage pImage (or Bitmap). But how?
Dim pImage As Bitmap
Dim g As Graphics
g = Graphics.FromImage(b)
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I have two graphics I'm trying to superimpose into one, then display in a DataGridViewImage cell...The Value property of a DataGridViewImage is an Image type.
Dim Image1 As System.Drawing.Image = imgl_Imagelist1.Images(0)
Dim Image2 As New Bitmap(imgl_ImageList2.Images(0))
Dim DualGraphic As Graphics = Graphics.FromImage(Image1)
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Private Sub PictureBox1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
e.Graphics.DrawEllipse(Pens.AliceBlue, New Rectangle(New Point(0, 0), New Size(PictureBox1.Width, PictureBox1.Height)))
End Sub
I am trying to draw a circle in VB.Net, .Net version 4.Nothing shows up in the paintbox.
I have an assignment and I have to calculate the area of a circle. I have my textboxes and buttons but I don't know how to write the codes and I have followed the directions and the example in my book which is microsoft visualbasic 2008 step by step.
View 2 RepliesWhen I change the color of the circle it creates a new circle. How do I get it to change the color of the existing drawn circle?
View 6 RepliesI have created a program that Draw a circle and then you can move it around a picturebox. I have made code so that it changes colour but instead of changing the colour of the circle already been drawn it creates a new circle which when you overlap the original circle with the new circle it cuts part of it.So what I wanted it to do when I change the colour of the circle it changes the colour of the circle already been drawn instead of creating a new circle.
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Also I can't use the X and Y coordinate input to move the circle to the entered coordinates.
I drew a filled circle using: pixFractal.CreateGraphics.FillEllipse(RedBrush, MyPoint.X, MyPoint.Y, 16, 16)
I expected the circle to be centered on MyPoint. Instead, it seemed to be drawn as though centered in a square whose upper left corner was at MyPoint.
I am making a whiteboard program. So far I managed to generate the ability to draw lines and other small things. The problem is that I want to make a circle that follows the cursor to display what a dot there would look like. I am aware of the creategraphics property of picture boxes, but when I do that the circle stays there and a new one is generated where the mouse is now (an expected result). My question is, is there a way to draw and delete circles as the mouse moves. Also, is there a more efficient way of doing this. I did try using the OvalShape found in the power pack, but I cannot figure out how to display that over the picture box, when I right click the oval nothing happens.
View 2 RepliesOkay, so I am making a whiteboard program. So far I managed to generate the ability to draw lines and other small things. The problem is that I want to make a circle that follows the cursor to display what a dot there would look like. I am aware of the creategraphics property of picture boxes, but when I do that the circle stays there and a new one is generated where the mouse is now (an expected result). My question is, is there a way to draw and delete circles as the mouse moves.
View 3 RepliesUsing Visual Basic 9 I want to draw a circle and gradientFill the circle using FillGradientStyle = Centraland a FillStyle = SolidWith the same results as can be achieved in The Power Packs 3.0 OvalShape.
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