VS 2008 : Draw Multiple Bitmaps Onto Image?
Dec 26, 2009
I want to know if there's a faster way to draw images onto a picturebox based on a list of point.
vb
Dim MyPoints as New List(Of Point)
Dim MyBitmap as New Bitmap("C:MyBitmap.PNG")
[code]....
Now, This code may be a little sloppy, but I just put it together. The image isn't very simple, but it's simple enough. After about 10 images that need to be drawn, it starts to get slow.What would I need to do to ensure it draws the images faster? If I made the image itself smaller would it make it go faster?
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Apr 24, 2010
I'm currently working on a project where I need to bind 3 different bitmaps.Bitmap1, Bitmap2, Bitmap3.
I tried :
bitmaps = Bitmap1 & Bitmap2 & Bitmap3
But of course, that didn't work.If it's possible, I also need Bitmap1 and Bitmap3 to have a fixed size and Bitmap2 to change its width if the form is resized.
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Sep 4, 2011
I want to draw an image onto another image object but use an alphamask specified from another image that is grayscale.
I am drawing an animation manually so don't want to do this pixel by pixel as this would be extremely inefficient.
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Apr 14, 2009
I've searched these forums, and found some GDI and C# links, but I really want to do some image processing in VB.NET.
how I would go about combining 2 bitmaps into one, sort of superimposed on top of eachother? I don't know what libraries are available in .NET.
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Mar 30, 2010
I am writing a VB 2008 Express Edition application which has multiple forms. All of the forms contain one or more PictureBox controls. All PictureBox controls have assigned bitmaps via Image property during development mode. So far, all the bitmaps displayed during runtime without a slightest problem. Now, suddenly, not a single new one (i.e. which I add from this moment on) would display bitmap during runtime. All the old ones (i.e. those which I have added up to that unspecified point in time when something went wrong) still display bitmaps fine as they did before. But any newly added PictureBox (or, come to that, any other control which can display bitmap.
I have tried also Label control) displays the bitmap loaded via Image property only during development mode. During runtime the PictureBox shows as empty. I tried to load the bitmap during runtime via command Image.FromFile and that works fine (but I don't want to use this approach in my program). If I create a completely new application, all PictureBox controls display the bitmaps just fine. I don't get any errors or warnings in VB editor. I reinstalled the whole VB 2008 Express Edition including SP1 and .NET 3.5 SP1 with no difference whatsoever (as would be expected as any new application works with PictureBox controls fine).
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Mar 15, 2011
I need to draw a bitmap background with one or more moving bitmaps in the foreground; something like a chessboard where pieces move across it. I use a timer-tick event to redraw the background and then draw the relocated foreground image like the code below. But I get flicker, even though I set the form to use double-buffering. The culprit seems to be redrawing the background to refresh where the foreground images used to be; no flicker if I replace the background DrawImage with a simple Graphics.Clear. I think what I want to do is draw the background, and the foreground bitmap(s), in memory and then render it all. I used to do this with double-buffering, BitBlt, and .Refresh in VB6 but I haven't found the equivalent in VB2010. This must be a pretty common graphics requirement; what's the trick to it?
Dim Gfx As Graphics
Me.SetStyle(ControlStyles.AllPaintingInWmPaint Or ControlStyles.UserPaint Or ControlStyles.OptimizedDoubleBuffer, True)
Dim rectBrd As Rectangle 'use as clipping region for drawing
[Code].....
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Feb 7, 2012
[code]...
but, how to draw in picturebox? i use this code but not working!
[code]...
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Oct 21, 2009
Is it possible to have a picture box and draw on a line on top of the image that is in there with the basic express package?
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Jun 16, 2009
I need to know how to draw a bitmap image into a certain area in a picturebox, I also need it to be a specific size. I remember seeing it on the internet somewhere, I just can't find it again.
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Oct 21, 2011
Just wondering how if it is possible to draw onto something, with GDI+, that can then be saved to some kind of vector format?
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Mar 24, 2009
I assume that this will be an easy one for you guys. I have never dabbled with drawing in VB.NET. I have searched the forum and Google already, but have turned up nothing to help me. Here is my problem. I have an image that is in an image box. I would like to draw a string of text on it, centered vertically and horizontally. Here is what I am using to draw the text.
[Code]...
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Jun 1, 2010
I know that you can pass a Point array to the DrawImage method of the Graphics object to apply rotation, skewing and flipping, but I'm having trouble figuring out how to calculate the rotation. So far I've got:
Dim radius As Integer = Math.Sqrt((rect.Width / 2) ^ 2 + (rect.Height / 2) ^ 2)
Dim dX As Integer = RadToDeg(Math.Cos(DegToRad(angle))) * radius
Dim dY As Integer = RadToDeg(Math.Tan(DegToRad(angle))) * dX
Dim new_upper_left_corner As New Point(rect.X + (rect.Width 2) - dX, rect.Y + (rect.Height 2) - dY)
This is all just off the top of my head so far, I'm not sure if it's right. How do I calculate the other points on the rectangle, and is there a built-in VB.NET method that's much easier? (Apart from Graphics.RotateTransform, which is slow and also rotates around 0,0.)
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Jan 27, 2010
I'm currently working on a VB 2008 course of Michael Halverson, and I'm stuck at an assignment where I'll have to expand a previous wood order program so customers can add woodcuts to their orderIn the newer program a customer can define 4 coordinates (x & y for startpoint and x & y for endingpoint), after clicking on the button 'Next cut' a line will be drawn on screen (in PanelCuts) with a maximum of ten lines. After finishing, the coordinates must be saved in the order.txt, and when the client re-select the order in the main order program, they can review and adjust / remove the already specified cuts.Right now I'm at the point that the you can enter the coordinates, and the line will be drawn.
- What's the best way to store the submitted cuts, in a Label? array? or something else?
- When the form reloads, how to displays all previous made cuts? Can i count the numer of cuts and with For i = 1 to combined with SelectedItem. Split() ? [code]
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May 6, 2010
draw an image on form using an image in resources within VS2008VB instead of using C:userspublicimages
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Jun 15, 2009
I need to know how to populate a listview with all of the images from my.settings, and I need it to show the image in the listview. How would I do this? I've never used listview because I never cared to learn until now.
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Jan 13, 2010
how to draw an unknown amount of images to a form
the amount of images should be determined during runtime.
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Jan 9, 2012
I add a Image Control and a RichTextBox control to a from. And I want to darw a image by my codes.And then insert the image into a RichTextBox.
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Jun 6, 2011
i am trying to draw a iamge in an mspaint control, and then put that image into a richtextbox but it will ask for save file and file has been saved i want to show image in richtextbox as soon as click on save file in dialog window.
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Apr 10, 2009
How do I draw an image respectively on the PictureBox control and Image object? Welcome to the All-In-One Code Framework! If you have any feedback,
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Oct 24, 2011
Basically, I have a program which screenshots the form when the person clicks their mouse button. Afetr the click it will store the screenie in a bitmap.But the problem how would I store loads of picutres in different bitmaps if they for instance clicked 100 times without having to declare the bitmaps 100 times and seeing if each has a image and then checking thge next 1.
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Jan 27, 2010
I'm having a image ".bmp" in my asp.net page. I should be able to draw over that image. How can i do this?(Similar to drawing in Paint)
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Sep 4, 2010
I'm making a front end to dvdauthor.I have a picturebox which holds the menu background. In order to draw a textbutton on the background image I store the image in a hidden picturebox. So the text doesn't get drawn to the visible background.
Dim ctl As Control
For Each c As Control In pbMenu1.Controls
If c.GetType() Is GetType(TextBtn) Then[code]...
This works the first time. But if I hit save again it writes the text to the background image on pbMenu1.
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May 14, 2009
I have a problem with my code
after I click undo I can't draw on the image and I don't know why
this is my code
Imports System.Drawing.Graphics
Imports System.Drawing.Bitmap
Imports System.Drawing
[Code]......
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Nov 11, 2011
I'm trying to draw a 400x400 px image to a 400x400 form that I made. What I'm doing is:
Graphics.DrawImage Method (Image, 0, 0, 400, 400) 0, 0, 400, 400, ...
But when I run the form, the image seems to stretch slightly upon the y-axis, the x-axis seems to be working correctly.
This was what I was doing before (stretching the old smaller images to fit the size)
... (Image, 0, 0, 264, 231) 0, 0, 400, 400, ...
or something like that. Now that I'm trying to do it the correct way, I can't seem to get it to work properly.
Edit: I wonder if using a simpler verson of Graphics.DrawImage would work?
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Mar 23, 2012
I was wondering how I could draw an image using GDI, zoomed, like a PictureBox set on Zoom (SizeMode). How does that algorithm work?
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Apr 1, 2011
draw an image in my picturebox. Is it possible to give it an opacity attribute? I have been looking at the other versions of DrawImage but couldn't find such thing!
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Oct 30, 2010
trying to Draw an image to a picturebox using DrawImage(image,0,0, picturebox.width, picturebox.height).I know I have to use the PAINT argument but still having a little problem getting it to work.how to start the code?
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Nov 1, 2009
I have a very annoying problem, I am trying to draw an image with the Graphics class but when I do DrawImage, it automatically scales it up! heres some example code
graphics.DrawImage(My.Resources.TestImage, 20, 20)
PictureBox1.Image = My.Resources.TestImage
The picture box image is the correct size whereas the graphics drawn verison is too big!
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Oct 28, 2009
Can i draw a image outside my form?
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Feb 17, 2010
I'm using a class which lets me retrieve the a System.Drawing.Image by specifying a Sprite ID... I'm wondeirng, after I get the image, how do I draw it onto the form? Heres what I got so far
Dim img As Image = Util.SpriteReader.GetSpriteImage(3367)
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