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 :: 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 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 :: 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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Regular Expression (RegEx) To Replace Floating-point Numbers In XML?

Aug 22, 2011

I'm using Visual Basic 2010 Express to edit an XML file. I want to replace items that have (typically) non-zero floating point numbers with a single zero.

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Convert Single Precision Floating Point Numbers To IEEE 754 Hex And Back?

Aug 12, 2009

Private Function SingleToIEEE754Hex(ByVal pValue As Single) As String

[Code]...

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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 :: 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 :: 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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Drawing Graphics - How To Clear Image In PictureBox

Nov 23, 2011

I have 1 image in picturebox. Now I draw some rectangles. I'm trying clear the image (only rectangles and left the image) without success.

Private Sub btnImageSelection_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnImageSelection.Click
Dim intImages As Integer = 0
Dim intImagesLine As Integer = 0
Dim intImagesColune As Integer = 0
picImage.Image = PictureBox1.Image
[Code] .....

The cycles for is for show the rectangules and works fine. but
i.Clear(Color.Blue)
The image is clear but the rectangles are showed and then unshowed.

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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 :: Resize Objects Dynamically In .net?

Oct 13, 2009

I need to let the end user move and resize objects (like a textbox or button). There are several examples that demonstrate this in VB, but not in VB Express 2008, based upon VB.net.It looks like earlier you needed to access Windows API, but these calls does not work in VB.net. I understand that these call are replaced by "native" .net calls, but I cannot find any that does the job.

A typial example from old VB is:

Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long

This does not work in VB.net.

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Interface And Graphics :: Panels - Drag Objects Without A Windows Frame?

Oct 1, 2010

How do you drag objects without a windows frame?

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Interface And Graphics :: Clearing All Drawings In PictureBox?

Apr 5, 2012

I've problem with clearing all the drawings I've created in my PictureBox. In fact I've created animation which stops after certain time and remains on the screen. The animation is created/painted with collection of about 25 TextBoxes - input of a user. Now I've added a button which clears all that info in TextBoxes and also should clear PictureBox -ictureBox.Refresh(). The problem is when I add new info in 25 TextBoxes nothing appears in PictureBox and I can't start an animation. Wondering why...

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Interface And Graphics :: How To Make Picturebox Transparent

Aug 23, 2009

i am making a program with graphics and im using a picturebox for a button. The image inside picturebox is transparent .gif. The problem is that i don't know how to make picturebox transparent. I searched the internet but all exaples didn't work. Does someone know how to fix this problem?

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Interface And Graphics :: Picturebox Into Hexagon Shape?

Jan 3, 2010

here is my problem i am making a blockbusters game and have come across a problem where 2 picture boxes overlap each other which i dont want so i need to make a picture box or a button into a hexagon shape so they wont overlap

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Interface And Graphics :: PictureBox Is Zooming Up Images?

Jan 5, 2011

I managed to combine two .png images into one, and then display the result in a pictureBox image.However, the pictureBox seems to scale up my image! Makes it bigger!The pictureBox size is 96x128. The two images I have combined are 96x128. The pictureBox's SizeMode is set to "Normal"I have noticed that even though the pictureBox's image seems to be zoomed, it is cut to keep the 96x128 rect. But I don't want it to be zoomed...

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Interface And Graphics :: Animated Gif In Picturebox, Slow & Choppy?

Apr 3, 2009

I've been searching for days. I can't find anything that I think is going to work. I've probably read the answer and skipped it because I don't get it. I'm new. I've researched multithreading, sub routines and webbrowser. The webbrowser thing doesn't seem professional to me.

All I want is the animation to be smooth when it's displayed and to have it integrated into the app so it's not called from the local drive.The animated gif is in PictureBox3. Please point me in the right direction. I really don't want to use a static image.

[Code]...

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Interface And Graphics :: Clickable Transparent Area On PictureBox

Jul 25, 2011

i'm working on Virtual K770i project - there is a picture of mobile, now i want to create clickable areas on "keypad" of mobile....I'm got idea about transparent label or something but transparency dont work on any object but Form1 - so how to make transparent clickable areas on picture box (see a picture)

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Interface And Graphics :: Get A Picturebox's Clicked Pixel Color?

Jul 31, 2010

I am currently creating an app and i want to be able to get the colour of a pixel, but in a picturebox.Example: I click anywhere in the picturebox and it will give me the color of the pixel I clicked.

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