Interface And Graphics :: Drawing A Rectangle Or A Point On A Form?

Jun 8, 2010

I'm just getting started, and it's as simple as that: I need guidance to draw a rectangle or place a dot or a point on Form1, in VB 2008 Express. I knew how in VB6 -- let's build on that.

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Interface And Graphics :: Drawing A Point On A Particular Picbox

Feb 2, 2012

I have several picture boxes on a form (frmMain).My question is, how do I paint a point on a particular picture box at the location specified by the coordinates of the current mouse position? The snippet below shows defining some canvases and pens. But I'm not sure how to capture the mouse position when the mouse is over a particular picture box and how to paint the actual point at that location.[code]

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Interface And Graphics :: Drawing Objects To Picturebox With Floating Point Numbers?

Jul 17, 2009

If I try to draw a circle by using e.g.

Code:
e.Graphics.DrawEllipse(Pens.Red, 50.133, 100.321, 0.1, 0.1)

I will get an error message. I tried something like

Code:
Public ObjectPoint As PointF
Dim cpoint As New PointF()
cpoint.ObjectPoint = New PointF(startX, startY)
e.Graphics.DrawEllipse(Pens.Blue, cpoint.ObjectPoint, 0.4, 0.4)

but it didn't work for the location and the circle size. How to draw a circle(and rectangle) by using floating point numbers?

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Interface And Graphics :: Making A Custom Class That Mocks The System.Drawing.Rectangle Class?

Jul 6, 2010

I'm making a custom class that mocks the System.Drawing.Rectangle class because the Rectangle class doesn't have a name property. I need a name property because I am adding all of my rectangles to a collection and I need a little more info stored than just their locale and size. So I changed the _onPaint event but nothing is working out when I run the program?

Public Class Rectanglar : Inherits UserControl
Public BackgroundColor As Color = Color.Blue
Public Sub New(ByVal name As String, ByVal XY As Point, ByVal Widthy As Integer, ByVal Heighty As Integer)

[code].....

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VS 2008 - Drawing A Rectangle Snapped To A Grid By Getting Start Point

Dec 27, 2009

I'm drawing a rectangle snapped to a grid by getting the start point(Mouse down e.location) and the end point(mouseup(e.location). The coding I'm having trouble with is having the program determine which way to draw the rectangle(where the location should be, and the height and width.) Now, this would be extremely simple if the user started their rectangle from the top left corner and ended it in the bottom right every time. But you need to be able to drag from all angles. So does anyone have some code lying around that I could look at so I could actually get my rectangles drawn right?

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Interface And Graphics :: System.Drawing.Graphics.DrawString On Other Window?

Aug 14, 2009

drawing text on a window which is not the current form's window.I remember doing this in Win32 api with getwindowdc(handle) to obtain a DC for the Window, then textout() on the DC.

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Interface And Graphics :: How Do You Make A GUI Program That Is Not A Square/rectangle

Jan 31, 2010

I can't seem to make a GUI in the shape a circle...

something other than square/rectangle.

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Interface And Graphics :: Make Image Grey And Rectangle Area Colour

Jan 26, 2011

I am using the following code to place a rectangle around a form / form control, however what I want to do is make my screen grey and only the form / form control area be displayed in colour.

Code:

I have googled for ages trying to find something on this, but with no luck.

To illistrate this better they are using the same functionality in snagit 10, please see below link to a page that has a video link showing this (23 sec into video)[url]

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Interface And Graphics :: Point Containing Decimal Values

Jul 12, 2011

I'm drawing polygons,lines,etc. and I have to have the points of each precise - up to 12 decimals. Since a Point only takes integer values, I'm not sure how to handle scaling. I have a working user control, but rounding the decimals so I can put them into points is causing incorrect calculations (area, ect.).

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Interface And Graphics :: Point Translation Between Polygons?

Sep 7, 2009

i have 2 polygons: 1 - A rectangle with a certain size defined with 4, 6 points or more (what ever becomes easier). 2 - A non-rectangular polygon (a quadrangular) what i need is that when given a certain point with inside the rectangle, i can translate that same point in the other polygon in the right position.

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Interface And Graphics :: (.Net 2008, Framework 3.5). When A Button Is Focused By Pressing Tab Key, A Rectangle Appears On

Nov 13, 2010

When a button is focused by pressing Tab key, a rectangle appears on it. Even if the button's TabStop property is set to false, when the button is clicked with mouse the rectangle appears. Is it possible to
stop the rectangle from appearing?

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Interface And Graphics :: DoubleBuffered And External Drawing?

Dec 18, 2011

I am drawing a bunch of shapes on a form and I want to relegate some of these to a subroutine other than Form1_Paint().The form has the DoubleBuffered property set to TRUE.All the shapes that are drawn by an external sub get overwritten:Code:

[Code]...

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Interface And Graphics :: Performance Invalidating & Drawing A Lot

Jan 18, 2011

IGraphics and drawing and invalidating thing.I have improved, that I can tell. I won't explain everything, so here's the essential:Technically, my application will let you draw a rectangle on the form. You click, drag, and boom, a red rectangle is there. This rectangle will disappear when you start drawing another.I got that working.But my problem is performance. You see, obviously I have to update, invalidate and paint my rectangle every time the mouse moves while it is in "drawing mode". I do that every time the mouse's position changes.And that is quite a big deal. Every time the mouse's position changes? That's a lot of invalidations and redraws for a decently-sized rectangle!I thought of skipping some mouse movement, like only update every 5 coordinates moved or something. But that would render my goal quite inaccurate.I already invalidate only the regions necessary, that I can tell.

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Interface And Graphics :: Reinventing (and Drawing) The ComboBox?

Jul 25, 2009

I'm trying to make a custom combobox from scratch that multiple instances will share the listbox that holds the data on. I'm trying to draw the button face manually using GraphicsPaths and pens and brushes, but I'm having a few issues with it:

1. How do you draw that down arrow glyph in a way that doesn't look like a two-year-old sneezed on it? I'm having problems with the shape looking like the traditional one.

2. How do you position the listbox that contains the data in such a way that isn't bound by the containing form's render window?

3. I've tried to make the background look different when it has focus, but the OnPaint seems to think it always has focus and always makes the background the "focused control" background.

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Interface And Graphics :: Rubberband Drawing Using Controls?

Jul 17, 2008

Im using VB 2005 express edition. Im trying to draw rubber band lines and rectangles using controls like buttons in one form. My problem is, i did the rubberband lines and rectangles on diff forms.Here's the snippet code for rubberband rectangle:

Code:
Private Sub MyDrawReversibleRectangle(ByVal p1 As Point, ByVal p2 As Point, ByVal dashed As Boolean)

[code].....

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Interface And Graphics :: Rotate A Graphic At A Specific Point?

Dec 9, 2010

I want to rotate a graphic at a point and I used the centerX and centerY to define the center of rotation.
Here is what I wrote:

Dim rotate_mirror as new RotateTransform(CSng(txtbx_rotate_by.text))
rotate_mirror.centerX = 5
rotate_mirror.centery = 55
blk_mirror.RenderTransform = rotate_mirror

blk_mirror is the graphic I want to rotate. Unfortunately, It does not work.

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Interface And Graphics :: Drawing / Painting Imgs To Background.

Feb 9, 2009

Well im just upgrading from VB6 and i was able to paint images to the background of a form. The same method does not seem to work in VB 2008. Is there a way i can draw/paint images to the background of my form?

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Interface And Graphics :: Drawing Equilateral Triangle In Circle?

Jan 14, 2012

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?

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Interface And Graphics :: VB2010: Picturebox Drawing Disappears?

May 26, 2012

Problem1: I have a picturebox on a form. I have also managed to draw several PNG files with transparency onto the picturebox (see below). However, If I move the form outside the border and move it back, the image is gone. My source so far:

Dim k1 As New Bitmap(My.Resources.image1)
Dim k2 As New Bitmap(My.Resources.image2)
Dim drawMe As Graphics = PictureBox1.CreateGraphics
Dim bgcolor As Color = Color.FromArgb(128, 128, 128)
drawMe.Clear(bgcolor)

[Code]...

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Interface And Graphics :: Drawing Dynamic Connection Between Two Listview Controls?

Jul 4, 2010

I am need to drag drop listboxes with connection line in vb.net. If the listbox move then connection line should also move. I have attached picture as wel

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Interface And Graphics :: Drawing Line Chart With Dynamic Data

Apr 13, 2009

I would like to build a line chart which can redraw or change during a period of time with dynamic data. So that the x, y axis will change if out of range. The graph may be somehow similar to Matlab. I am using vs2005.

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Interface And Graphics :: Drawing Text With Custom Font And Color

Jan 8, 2009

I created an application in VS2005 that draws text with a custom font and color. The images look great from my XP machine. But from another machine running Windows Vista, the graphics are messed up. It seems that the transparencies inherit the default black background so there's this gray'ish/black haze around the text...

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Interface And Graphics :: Preventing Erasing Of Drawing When Window Is Painted

Jan 7, 2009

I'm having a problem with the graphics portion of vb.net. As a school assignment, we are making "turtle graphics" applications. I have mine working perfectly, the problem that we are having (not even the teacher can fix it) is that when the window gets sent the command to be painted (ie minimized and maximized) the drawings in the picturebox I am using are completely erased. I am looking for a way to prevent this from happening. I have been trying to store the image as a bitmap in memory, which does not work. Is there another way to draw to a bitmap/image in memory and then output that to a picturebox?

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Interface And Graphics :: Use A Graphical User Interface That Contains A Drag And Drop Form?

Oct 19, 2008

I'm working on a design project where I have to use a Graphical User Interface that contains a drag and drop form. It consists of having a window dropped on a wall. Both of them are images to scale. I would like to know what kind of code I would have to use to show the x and y coordinates of one of the points of my window when dragged so when I drop it, I'm dropping in it on the desired coordinate of the wall.

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Convert An Object Form System.Drawing.Graphics To System.Drawing.Image?

May 23, 2009

Is it possible to convert an object form System.Drawing.Graphics to System.Drawing.Image?

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Interface And Graphics :: Drawing Dotted Path Lines, With Even Dots Along The Path Line?

Apr 13, 2012

Problem drawing dotted path lines, with even dots along the path line.I want to draw a path line that can be any shape (square, round, outline etc), and along this path line I want even dots to appear.

I also want to be able to resize the shape (as in the example attached)This is very easy to do using "DrawPath" and defining points for the path and using a pen defined as dots.The problem I have is I want the dots to be evenly placed along the path, on any shape or size I draw.In the example I have created, I create a square with 4 points and draw a dotted path.There are 2 buttons that allows me to resize the square (larger or smaller) this helps show the problem more clearly.

The path starts at the top left corner and finishes back at the top left corner, the dots are evenly placed along the path, except the final dots at the end of the path. (Sometimes the dots are even and other times they are not even).The shapes I want to draw can be any size and any shape, but I have used a square in this example to show the problem I have. point me in the direction I need to go that allows me to draw the dots and give the impression that they are even all along the path, for all shapes and sizes.

In the pictures below if you change the size of the shape, one will have even looking dots, the other will not.

[Code]...

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Drawing Rectangle Inside Another Rectangle?

Jul 26, 2009

I'M creating a kind of photo viewer, and I cannot figure out how to orient the scroll buttons with the photos I want to draw because they all are different sizes.This is really hard to explain so please ask questions if you don't understand.I'M thinking if i could draw every photo on a single rectangle and then the scroll bars will position that rectangle up or down. but is there a way to make a rectangle inside another one so it only shows inside that rectangle?

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Interface And Graphics :: Adding A A Form As A Child Form To A Third Part Window

Mar 24, 2011

As Autodesk is going to discontinue VBA for their Inventor product in the near future I have been looking at other ways to run VB.NET in Inventor. To date it doesn't look like VSTA will be the replacement. Automation from an External VB.NET app is certainly possible, but leaves something to be desired for speed and integration. Compiled Add Ins are the Cadillac of choice but can be a royal pain to debug and develop. Autodesk now provides a lightweight VB.NET script interface called iLogic. It's main purpose is to allow extreme customization of Solid Modeling parts. The code actually resides inside the Part Model file.

[Code]...

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Interface And Graphics :: Add A Scrollbar To Form?

Aug 12, 2009

How can I add a scrollbar to my form I tried the auto scrollbar option but is not working ??

How can I validate the user inpute inside a textbox to check that he type the desired word?? for Example validate if the user typed the word ( Bob)?

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Interface And Graphics :: Maximizing Form And Everything In It?

Aug 20, 2009

how to maximize my form window and for example my list view, tool strip container etc etc, maximize with the form window. I would just create the form to my monitor 1440x900 but this will be used on several computers all with different monitor size. What I'm looking for is a quick easy way of doing instead of setting each one up separately.

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