VB Form And Picturebox Transparency?
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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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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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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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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Feb 7, 2009
Is it possible to have transparency on a form but not on a button on the form?I know transparency can be controlled for the form in properties (VB 2005), but how can we isolate the button from being affected?
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Nov 15, 2010
I know when I draw to the form and add controls I get a flicker effect.If I draw to a picturebox on the form and add controls will the picturebox flicker?
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Dec 19, 2009
I am working on an application which has transparent forms. By using transparency, I am smoothing the edges of the forms. I have got a bitmap which I set as background image of the form. I use red as form's transparency key. Although transparency works fine when my computers display is set to 24 bit color, when I change the setting to 32 bits, transparency doesn't work. In this case, users who have 32 bit color dept setting on their systems will not be able to use my application. When I searched the web, I found some solutions such as using bitmap.maketransparent command, or using magenta color for transparency key or using 32 bit bmp files etc. However none of them worked for me. Some forums suggest that this is a bug and there is no way to solve this problem. But if so, why some applications such as Winamp can display transparent forms although my color dept is set to 32 bit! I am sure there is a solution. I am working on VB.NET 2008 and my OS is Windows Xp Service Pack 2. Please help me about this subject.
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Jan 30, 2012
I used some code i found that extends the aero glass border across the entire form... looks great... however when i add a control (like a datagridview) it doesnt look right at all because of the transparency of the form...
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Mar 20, 2011
[URL]
i hav a transparent png. i need the form also to be transparent so what i did was set the transparency key to the form back colour see what happens (it is in the pic)
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Dec 17, 2005
I have just converted my first VB6 application to a VB Express version. I have a fair sized library that I would like to convert but I am having a severe problem with a very simple little game program that I selected for a trial conversion. The problem is this. I do a lot of graphic / art work in my GUI and heavily use labels with transparent backgrounds. When I converted to VB Exp 2005 the labels are no longer transparent but rather carry the background color attribute of the Form. Is this how MS implemented transparency in VB 2005? If so the product is of no use to me whatsoever. I checked the Labels attributes and they are set to transparent. But they are not being displayed as such.
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Apr 10, 2009
How can i set the transparency Key in MDI parent Form?
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Nov 14, 2009
I can't get the transparency key to work with the mdi child, I really need it to work as well, but I just can get it to work properly.
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Aug 13, 2010
I'm trying to write some toast-style popup notifications (similar to Growl) which should appear next to the system tray and stack as appropriate.I can handle the instantiation/location/etc... but I want to add a capability for non-rectangular toasts. I'd also like to have Alpha transparency so a semi-transparent background PNG on the toast form would blend with the desktop or windows behind it.
So... To get the obvious out of the way: Form.TransparencyKey is not sufficient for my needs as it's an all-or nothing transparency effect I want to get 50/50 foreground/background in some places, 0/100 in others, 100/0 in yet others etc.My initial approach is to override the OnBackgroundPaint() method, comment out the call to MyBase.OnBackgroundPaint and use the graphics object in the eventargs to draw exactly what I want to a form.This seems to work to start with - at the moment, I'm just drawing some rectangle for testing purposes so a PNG may present new difficulties but I haven't got there yet.
What I haven't been able to accomplish is updating the graphic - The first time the form is rendered, it shows perfectly as I'd expect (no border, just some rectangles floating on a desktop). If I move the windows behind the transparent window, the transparent window doesn't update/re-paintI believe that I need to be calling Me.Invalidate() to force a re-draw but am unsure when I should make the call - How do I know a window behind me has changed its' contents?
Edit: I tried putting a Me.Invalidate() inside a timer just to test how the redraw happens - it seems that it does trigger a re-draw but the re-draw opccurs OVER the existing form background - ie an area that was originally 50% opaque is now 75% opaque (50% + 50% of what was there before)So, after a couple of Invalidate()s, my form is showing as a black box - I need to clear the background of the form before re-drawing but Graphics.Clear(Color) seems to simply do a fill with the specified color - and obviously for the purposes of this question, Colors.Transparent doesn't really mean transparent - It seems to be a trick used when rendering the window to "show contents of control beneath this" which just doesn't work when we're dealing with the form itself?
Imports System.Drawing
Public Class TransparentForm
Private Timer As Timers.Timer
[code]....
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Sep 14, 2011
I have a custom shaped form with a transparency key of black. With the opacity set to 100%, I do not see the garbage around my custom shaped form As soon as I change the opacity, I see a transparent square(my borderless form) around my form.
How do I make it where my form retains its custom shape, and can have an opacity of less than 100%?
If you want something you've never had, you need to do something you've never done.
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Feb 15, 2010
I've tried adding a splash screen ]...to one of my applications and after exploring a while I somehow managed to get it working what bugs me now is that my splash screen is in fact a image inside a picture box and the form always shows the control color behind so what I tried is adding the form color to the transparency key this worked, somehow now, I use a png image that has some transparent effect also what I've noticed is that where I would want to show the transparent effect from the image the transparent color that is set in the forum shows below is the image to get my point of view:
I'm wondering if I can remove that "pink" color (set by me in the forum) from the image .I want to get a effect like the one Adobe products have for example
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Nov 12, 2010
I am an intern at a company doing Drawing Tools for their program. My supervisor is currently having me just make a user control that draws a line and adds transparency over a form. (I started this internship very early, so my knowledge is very limited compared to what it should be for a standard intern)
This is what I have so far:
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
If MyBG Is Nothing Then
MyBG = New Bitmap(Me.Width, Me.Height)
[CODE]...
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Jan 6, 2011
I have a picture box created in the parent form.But whenever i call a child form, the picture box will be at the top and cover the child form.I try with SendToBack and then it is completely hidden at back ofthe parent form.
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Nov 12, 2009
I'm trying to add picture boxes on my form for a connect 4 game. I'm trying to make the grid and use a loop to do so. This is the code I have so far, trying to make it a subroutine I can just call on my form_load.
'create picture boxes for game board
Private Sub pb()
Dim i, j As Int16
Dim space As Int16 = 5
For i = 0 To 3
[Code]...
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Dec 30, 2009
Add scrollbars to picturebox or form when it becomes too big?
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Apr 23, 2011
I finished making a top view shooter game that shows the whole map from above. The map is kind of big so the characters that move around are kind of small. Is there anyway to zoom in on the main character (a picture box), but still keep all the original properties of the form?
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May 17, 2009
I want to move a picturebox in my form.[code]I get an error saying: Cross-thread operation not valid: Control 'PictureBox1' accessed from a thread other than the thread it was created on.
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Nov 20, 2009
(Visual Basic .NET 2003) I am trying to move a picturebox up and then down on my form. The Picturebox moves up but does not move down. The motion is more of a bouncing motion (to the left) until it disappears off the screen. I have one button and one timer. I know this is probably so simple, but I cannot resolve the problem
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Timer1.Enabled = True
End Sub
[CODE]...
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Sep 17, 2009
how do i "drag and drop a picturebox" on a form drag and drop is used in vb.net for moving a picture by mousedown
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Oct 12, 2007
Okay, so just wondering, if its possible. I Have a picturebox (PictureBox1) and just wondering if I dragged the picturebox how could i drag the form?
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Dec 5, 2010
How would I draw a picture on a form? Would I put in a "picturebox" and draw in that? And if so, how do I do that? (I want to draw a bar chart).
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Jul 22, 2009
My name is DN and I'm creating a strategy game. I have created a panel and I have put a PictureBox on it. Now, the problem is here: The PictureBox is bigger than the panel. I know that we can solve the problem with putting to the panel two scrollbars, but as in a good game scrollbars should not exist in the main picture (map). I want for the people to control the map with keys (up,down,left,right) and the scrollbars should not be visible.
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May 29, 2012
how to add a new form to my application programmatically & then add a picture box, text box, and a button to that new form?
I can add a new button, a new form, or a new picturebox on my current form but I can't seem to figure out how to add a new form to my application and then put the picturebox and textbox and the button on that new form.
'Form2
Dim form2 As New Form
form2.Size = New System.Drawing.Size(500, 500)
form2.Show()
[Code]....
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Apr 17, 2010
I can't find a basic thing: how to enable a picturebox to be dragged inside a form? I'd need to be able to drop it inside a listbox so that listbox would get the picturebox's name-value in it. But I'm having trouble even getting started.
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Sep 30, 2010
I'm trying to change the image in the picturebox located on one form from a second form.
My code is: frmSetup.pbxUSBInterfaceAttached.Image = My.Resources.CheckMark
I noticed that when my code goes from one form to another, the debugger no longer knows that there is an image in the picturebox (pbxUSBInterfaceAttached.Image = Nothing). I tried changing the Modifiers property of the picturebox to Public and it had no effect. Is there any way to do this or do I have to change the image from within the form that contains the picturebox?
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