Picturebox Transparency - App Has Scrolling Images In The Background And A Picturebox On Top
Feb 28, 2009
My app has scrolling images in the background and a picturebox on top. The image in the picturebox has transparent parts. How can It so that the transparent parts show whatever is belo the picture box, not the form background? I have tried taking screenshots and positioning them as background but this just freezes the app.
Dim ScreenSize As Size = New Size(154, 83)
Dim screenGrab As New Bitmap(154, 83)
Dim blank As New Bitmap(100, 300)
[CODE]...
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Jan 2, 2011
Has anyone else had this problem in VB.Net (I'm using VS 2008)?Basically I have several panels in a form, and the form has one background image (a gradient) while the panels have a different background image for themselves. Now, when I place a couple of labels and a button in the panels, and set the background of the labels to transparent (so that the background image of the panel is shown as the background of the labels in question) while running the application the form and panels kind of "flash" (a very short and fast white flash, like from a camera) the whole window for a couple of seconds (continuously), after which they do several refreshes of their text and background.
The problem only happens in Vista and Windows 7, XP seems to be not affected. Is this fixable? I thought it may be a problem with my display drivers (as it's not happening in my XP installation), but I saw the same problem happen on a video review of my application at CNET, so I'm guessing I'm doing something wrong with the GUI?
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Jun 29, 2010
Right now I currently have an array of pictureboxes, and over them I want another large picturebox that has a sort of transparent fog effect. I created a png with this and made sure to save the alpha transparency, however when the picturebox shows up, you are not able to see underneath it. Is there anyway to fix this without using the GDI instead of pictureboxes? Because of the way the program is set up, I think GDI would be too slow for my purposes.
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May 9, 2011
I have a windows form application where there are several circles that need to be moved around the form at random. I have tried doing this with pictureboxes, as well as ovalshapes.
When I use a picturebox, the corners of the image (which should be transparent) show as the same color of the form, when they should show what is underneath (which could be another circle).
I do not have this problem when I use an ovalshape. However, two of my circles need to have a star on them and I can't seem to figure out a way to do that because I can't get a transparent background. I've tried a transparent background image and a transparent background label and nothing seems to work.
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Dec 29, 2011
I want to try an simulate a fake lighting system in Visual Basic 2010 by using 2 images.One is Form1's background, and the other is Picturebox2's image. Picturebox2's image is a black background with a transparent circle in the middle.The only problem is, when transparent, it shows the background of the form, and looks right through the background image.How could I get around this so that the transparent part of the image is Form1's background image, and not the backcolor?
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Mar 1, 2012
In VB6 I could embed a panel or picturebox containing controls or images within an outer panel or picturebox. If I moved the outer control then the embedded panel would move with the outer panel and stay in the same relative position, which is what I require. This doesn't seem to happen in VB.NET, the internal panel stays fixed in its location, even if I have pasted this panel within the outer container. Is there are trick to this or do I have to code to get the internal panel to move with the outer one? How does an internal container remain embedded within an outer one?
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Sep 4, 2011
What would be the best and easiest way to change background image in a VB application from images that are preselected by user from any given folder on the hard disk.
So say "Mike" selects some images in D:ImagesNature in the Nature folder we have lets say "20" images. Now the VB app reads this and saves path so next time its open its fetching images from that folder once more. And every few sec lets say 45 sec a new image is loaded for background.
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Nov 15, 2010
In the following code is the way to make a picture transparent (picture i1 is emty and opacity can get values from 0.00 to 1.00[code]...
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Jan 13, 2012
I'm trying to make a picture viewer, with which users can see the actual size and fit screen size of the picture. They can also zoom in and zoom out and control the view with scroll box. If its not possible by picture box then what other control should I use?
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May 20, 2011
I am building an image processing program. As part of this, I have a picturebox, set to AutoSize.
When I load an image larger than the size of the picturebox's container the box automatically expands and shows scroll bars. This is what I want. I can scroll the picturebox using the mouse to click on these, but I would like to be able to scroll the image using the arrow keys. This poses a couple of problems:
1) finding what properties to change or events to raise when a key is pressed. It is a property of the picturbox, or a property of the container?
2) dealing with repeated scrolling while the arrow keys are held. I know I can use keydown to detect that an arrow key has been pressed, but how do I continue to scroll as long as the key is held down?
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Oct 12, 2009
I make a project for Cable Television in vb.net 2008. So, require a picture box object to move right to left on the above media player for scrolling flash news's.I use timer control for moving picture box right to left.But i have small jerks in scrolling.how to remove that jerk. I want smooth scroll but it is in jerky.
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Jan 19, 2011
I'm trying to figure out how to pin a Picturebox to a scrolling Textbox so that when I scroll down in the Textbox the picture follows it.
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Jun 28, 2010
I have placed several PictureBox Images of different colored dots(which represent lights) on an image of a Christmas Tree. I can make the lights randomly flash using a randomGenerator and a Select case statement. However, the code is very long. There are 67 lights on this tree and the code is 71 pages long. There has to be an easier way to do this. So far I have tried the following with two images of lights just to see if it would work and it does not work:
Dim picLight(2) As
Boolean
For intX
[code]....
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May 12, 2012
I want to make a PictureBox to non background color, when I change its backcolor to transparent its backcolor still black.
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Nov 1, 2011
ok, is there a simple way to make a color in an imported picture in a picutrebox transparent?
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May 10, 2012
I want to be able to click a picturebox with an image and then load 3 other pictureboxes with images and then be able to click one of those 3 images and have it show in a bigger picturebox. How would I go about doing this? If its to confusing I will attach an example project I put together.
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Mar 29, 2010
The title is simple and to the point: I have two images, same dimensions that I want one to fade in over the other. How do I do this without locking up the GUI?
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Mar 29, 2010
The title is simple and to the point: I have two images, same dimensions that I want one to fade in over the other. How do I do this?
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May 12, 2011
was just wondering what i have to do to create a save button that actually works. i have a form with a picturebox. i want to create a save button called btnsave and when an image is in the picture box the user can click the save button and it will save it to a location of my choice example c drive. and the other question is how do i get the saved files to name its self in numerical order. for example: image1, image2, image3, image4 and so forth.
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Jan 5, 2011
In this question 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"
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Mar 11, 2010
Well' I'm trying to print image from my PictureBox...this is my code for drawing image: e.Graphics.DrawImage(PictureBox1.Image, 0, 0)
But I need something more specified...when I print my document with this code, for some of those, I don't get the whole document. So I need to specify that...I need to stretch my image to my A4 page so that m.
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May 6, 2011
I have made a screensaver in VB.NET. I am running into some roadblocks in the code though. The idea first was to have a ball bounce across my screens. It then evolved into spawning new balls that bounce across the screen. I then added collision detection so they would bounce off each other. Here is the problem that came up:
When said balls overlap each other, you can easily distinguish the edges of the picturebox that holds the images. I have made the background of the picturebox transparent, made the bitmap with a magenta background and made magenta transparent (for the image), but I can still see the picturebox edges when they overlap. It seems the transparency is not only making the background transparent, but giving it X-RAY vision to display not the visible area behind it, but the root background color of the form. here is a sample of the code which makes the transparencies.
Private Sub frmscr_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim bmp As Bitmap = My.Resources._smiley_face_image
Dim clr As Color = Color.FromArgb(255, 0, 128)
bmp.MakeTransparent(clr)
[code].....
I also tried to see if changing the image from background to foreground would help...no such luck.
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Feb 26, 2009
i have been troubled with my resize function, I have loaded images and when each image is selected is will be displayed on the picturebox...the problem is that when i resize the image in the picturebox it throw me an error message Object reference not set to an instance of an object. I have 4 buttons left, right, up and down..here's my code for it...
[Code]...
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Dec 23, 2010
I use the following code to check the background image of two picturebox but it not work.
name of 1st picturebox is :cell1
name of 2nd picturebox is:cell2
code :
If (cell1.BackgroundImage Is cell2.BackgroundImage) Then
'Do somethings
Else[code].....
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Jan 3, 2009
I have a picturebox with a pic in it, and I have a label on top of the picture.
I want the background of the the label to be transparent, so I set it's background prop to transparent and it's parent to the picturebox. I do this on form load, but for some reason the label entirely disappears once the form loads?
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May 17, 2012
I'm trying to print the selection of my picturebox as the background of the image. I can get the image to show, but it's not the height and width of the background.
' Fig. 15.24: CheckWriter.vb
' Printing a paycheck.
Imports System.Drawing.Printing
Imports System.Drawing.Imaging
[code]....
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Dec 5, 2009
Set contents of picturebox as desktop background?
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Apr 15, 2011
I have a form that contain an big image and an small image.The small image will be showed on top of the big image. Both images are in .gif format and the small image background is transparent.I set the picturebox's backcolor for small image to transparent, but I only get the backcolor of the form in stead of the big image.Is there anyway to see the big image at the transparent area of small image?
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May 9, 2010
I have a picturebox that contains an image and the background of that image has been set to transparent and saved as a .gif in photoshop cs2.
I used that image in a picturebox and I set the BackColor of that picturebox to transparent, but it's not transparent; I have a gray background on that picture.
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Mar 20, 2011
I have a pictureBox on my form along with two buttons (Back and Forward) but I can not find a viable method of doing what I wish to do: Scrolling through images in a folder like the default Windows Picture Viewer does with Arrow Keys.Is there an efficient way to do this?
I'm using Visual Basic .NET with Visual Studio 2010, if that matters.
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