# Draw A Quarter Circle?

Jul 26, 2010

How can I program a quarter portion of a circle, with points A and B ??

How can I code the red line on the image?

## Draw A Circle In .Net?

Nov 3, 2011

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.

## Draw A Circle And GradientFill?

Oct 10, 2009

Using 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.

## Draw A Line / Circle?

Apr 18, 2009

I searched this forum for the answer before posting this and from what i have noticed there is no "simple" way ofcourse "simple" definition varies from one person to another

my definition of simple is something like this Line(x1,y1,x2,y2,color) or something like that.[code]...

## Draw Rectangle In A Circle?

Mar 12, 2011

User launches the application, enters width of circle, then enters width and height of rectangle and presses the button. Then app draws the circle with rectangle inside of it (if it fits). App should output the coordinates x1;y1 , x1;y2 , x2;y1 , x2;y2 (corners of rectangle) somewhere on form and would be great if it could post those coordinates on x and y axes (optional).

## Draw The Circle At The Below Position?

Feb 24, 2011

how to draw the circle at the below position, i have marked where i should get the angle. And i m also sending my piece of code.

Plz tell how to draw the circle at 180 degree on x-axis, For green circle. And later i should draw at the same place semi circle, dnt know how to draw them... i.e on green circle at zero n 180 degrees.

## Draw The Circle Of The Clock

Jun 21, 2010

I am having some trouble drawing a circle that is constant when the program runs. right now I am able to create one of my clock hands (that is going counterclockwise), but I can't figure out how to draw the circle of the clock, any suggestions? [Code]

## Draw A Circle In The Form With One Button In .net?

Jun 21, 2010

This code is to draw a circle in the form with one button in vb.net. Dim g as system.drawing.graphics

g=me.creategraphics
dim p as new system.drawing.pent(system.drawing.color.Blueviolet)
g.drawellipse(p,150,100,30,60)
end sub

this is not working it is showing the error in the declaration of p any one can help me out to rectify this error

## Draw Circle With A Center Reference?

Feb 4, 2011

Is there a way to draw a circle by specifying the center of the circle rather than the upper left corner?

This is what I'm using to draw the circle[code]...

## Draw Lines Inside Circle?

Feb 2, 2011

How to draw lines inside the circle. I mean a circle with n-number of lines within in it.

## Use Timer To Draw Circle / Path?

Mar 17, 2009

I need to write some code which draws a predefined circular path (say 48pix diameter) and use a timer to delay it to show it being drawn. I need to use GDI+ to do this. My guess is on the Timer.Tick, I would set some Point value for the next point on the path, and then call Invalidate to raise the Paint event.

## VS 2005 How To Draw Circle And Cylinder

Aug 16, 2011

i want to draw picture of circle and cylinder in my programme, i am using visual studio 2005 programme anyone able the give me guide.

## Interface And Graphics :: Draw A Circle On The Console?

Feb 28, 2012

I am trying to draw a circle on the visual basic console. I have been told that the console is not made for this but i have to use it.

What I want to do is a circle with:

Centre (40,20)

I know from basic trig that the following will give me the points on the circle:

x= (10 x CosA)+40
y=(10 x SinA) +20
(A) being an angle in radians.

Then combine x & y that will give me a point on the circle.

I want to use the '' Sets the cursor position

Console.SetCursorPosition(x, y)
Console.Write(".") "

To print a point(.) on the given position from the formulas above.

Now heres my question how do I get Visual Basic too calculate:

x= (10 x CosA)+40
y=(10 x SinA) +20

360 times i.e 0rad-2Pirad and then pass the x & y [(x,y)] point to my cursor position code so that a '.' is printed at that position. I.e I will end up with a circle made out of 360 '.'

I would asume that a loop is used and also an array to store the 360 Pi values. I'm finding it extremely hard to even get Vb to calculate the Cos of an angle.

## Draw An Accurate Circle With MouseDown And MouseUp Boundaries?

Dec 30, 2008

is it possible to draw an accurate circle in vb.net with mouseDown and mouseUp boundaries? I only manage to create circle-settings with rectangular boundaries using DrawEllipse. I've tried to work around it using pythagoras but it just doesn't work and I'm pretty sure I've got my maths right...

Is it possible to define a circle with DrawEllipse(pencil,x1,y1,width,length) ?

## Draw Ishihara-transformations (circles In Circle Without Intersection)?

Apr 28, 2011

Question: I need to draw pictures as below in C#/VB.NET Draw ishihara-transformations (circles in circle without intersection)?

Note that my problem is NOT drawing circles in C#.

My problems is drawing them without much whitespace and without intersection.

My thought would be using "Orbits" and then draw the circles with center on the "orbit" lines. (with some orbit lines for bigger and some only for smaller circles)

## Graphic Repaint / Refresh - Draws A Circle Using A Timer - Circle Gets Displays It Flickers

Jun 8, 2011

I 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

[CODE]....

## Round Up To Next The Quarter?

Aug 22, 2011

I need a function in VB.Net that is round up the value to the next quarter.Example value 0.26 should become 0.5 and 0.51 should become 0.75,etc.Excel has this function standard like RoundUp(value;0.25). But I my opinion this function is available in VB.Net. Is there an easy way in VB.Net to calculate the next quarter.

## Split The Given Dates And Add It To Their Respective Quarter?

Apr 3, 2012

I want to find the Quarter date time values for my exampleSuppose I have selected this two date and I want to split it by quarter date

Start Date : 11/21/2010
End Date : 04/14/2012
I want the below result from the above date:

[code].....

## Get DataGridView To Draw The Way A Professional Control Should Draw?

Apr 26, 2010

I need to get the DataGridView to perform the way it should perform. I'm new to the .NET environment, but I learn fairly quickly. However, I find it difficult to decipher themassive black box of the DataGridView control enough to make it do anything other than what it already does--Draw very slowly.

## Calculate The Area Of A Circle?

Jun 14, 2009

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.

## Change Color Of Circle?

Nov 6, 2011

When 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?

## Change Colour Of Circle?

Nov 5, 2011

I 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.

[Code]...

Also I can't use the X and Y coordinate input to move the circle to the entered coordinates.

## Circle To Be Centered On MyPoint?

Jan 27, 2012

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.

## Display Circle That Follows Cursor ?

Jun 9, 2011

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.

## Display Circle That Follows Cursor?

May 9, 2010

Okay, 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.

## Drawing 3/4s Of A Circle With GraphicsPath

Dec 29, 2011

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()

[Code].....

## Drawing A Circle Using VB 2005?

Nov 3, 2009

can i have codes of drawing a circle using visual basic 2005

## How To Create A Circle And Square

Jul 13, 2010

i need a code the will draw a circle on a picturebox that will have the border color blue and the inside color black. i also need the same thing but for a square.

## How To Move Mouse In Circle

Jul 7, 2011

I would like to be able to move mouse in a circle, given the height and width...

## Make The Circle Bigger By +1 Til = To 55?

Feb 8, 2011

I am trying to do a do while loop to make a circle draw itself resized by 1 each time 50 times. I just dont know how to define the numbers that make up the circle size properties. here is my simple code

Me.CreateGraphics.DrawEllipse(pencolor, 135, 125, 5, 5)

I would like to just make a simple do while loop to adjust the 5,5 by +1. I am really new to programming and any help will be excelent. If I knew the property name of the 2 numbers I need to change I could declare them as a letter H & W and just do while

H,W is < 56
H+1
W+1

if this makes any sense?

## VS 2010 - Get All The Points That Is In The Circle

Mar 9, 2011

I have a picture and I have defined a circle on it(as a rectangle) . This will not always be on the same place and i need a way to get all the points that is in the circle. If it it will always be a near perfect circle.

## 2-dimensional Control Array With Circle's

Mar 5, 2011

I have to make a game "connect four". I'm having some trouble with the 2-dimensional Array that needs to be created in order to play the game. Firstly there is a function which makes rectangle shaped pictureboxes into circleshaped boxes. Secondly there is a method which is supposed to create a 2-dimensional array with circle's but i can't get it to work. When I run it it only gives me 1 circle at the location which i have given it. I don't know how to get it to repeat. Here's the code.

[Code]...

Jan 8, 2010

i just want the RadioButtonList without the radio button on it, i will code the rbl so that selected items have a different background color and make it look more professional, the radio buttons themselves i want to be able to get rid of in terms of apperance... if you know of any way to do it,

## Create And Move A Circle In Maze?

Jun 25, 2012

I'm a beginner in visual basic and i am working on a maze that that your are supposed to move a ball or circle using he arrow keys [code]...

## Make A Clock - Circle With Points

Sep 6, 2009

I want someone to help me on using graphics on vb.net form.I am planing to make a clock so first i want to draw 12 points in a circular fashion.

## Moving Control(Label) Around A Circle?

Oct 27, 2009

I have created a simple circle on my Form with this code

Private Sub DrawCircle(ByVal cp As Point, ByVal radius As Integer)
Dim gr As Graphics
gr = Panel1.CreateGraphics

[Code]....

I have a timer and a label on the form , and i want that label to circulate around that circle on each tick of a timer.

Mar 8, 2010

I want to change the clicked circle color of a radiobutton to gray (from blue - I'm using Vista). How can I do this?

## VS 2010 Circle Diagram Drawing?

May 13, 2012

I'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

[Code]...

## VS 2010 Formula To Check If C2 Is In The Circle Of C1?

Apr 12, 2011

I have 2 coordinate points, lets say C1 and C2.

C1 has a circle around him, with a diameter of lets say 20px.

Now the problem is, i need a formula to check if C2 is in the circle of C1.

## Forms :: Uses A Button To Draw A Line And A Second Button To Draw A Rectangle?

Oct 14, 2011

I have a form that uses a button to draw a line and a second button to draw a rectangle. I have a third button to clear the form but can't find a code example to code the Clear button.