After my code runs for a while (i.e., 1+ hours), a picture box that was being displayed properly switches to showing a red X. The surrounding code still runs, but the image is not shown. I was intermittently having an out of memory error, but recent changes may have addressed this issue.The application is capturing a webcam image of an 8 x 16 grid which can hold different color balls. It displays the live image in picturebox1 (this works). I then grab a still from the live image, process it to see if there is a colored ball in each of the grid holes, and draw a representation of the image in picturebox2 using a grid of colored circles. As the live image changes, so does the drawn image. The drawn image is updated about 4 times a second. In each cycle I trigger a redraw of the image with a PictureBox2.Refresh.
Everything works great for a while (about an hour), but then picturebox2 gets the red X. The code keeps running without throwing an error. The live image still works.Recently I was getting an OutOfMemory error (again after an hour), but memory usage should not be growing in the code, and I have 8 GB installed. To address this issue I
1) forced Garbage Collection every 30 cycles (this does not seem to help, but I left this in the code.)
2) Inserted a Picturebox2.dispose before the Picturebox2.Refresh, but the Dispose took the picturebox off my form. I removed the .Dispose.
3) Moved declaration of variables out of loops to top of subroutines. (that seemed to get rid of the OutOfMemory problem.)
4) Inserted various try ... catch statements, but the code does not throw an error when redrawing the image, so this did not help.
I'm trying to build a project where I have a set of products in a listbox. When you select an item in the listbox, a picturebox shows the preview of that certain product.I practically finished the entire project as well as the picture part; however, I realized that the way I set up the coding, I used image locations from my hard drive meaning that someone can't view them on another computer.This is a portion of my coding:
[highlight="Dim PicSelection As String PicSelection = ListBox1.SelectedItem Select Case PicSelection[code].....
In the form design I set up a TableLayoutPanel, 20x20 cells and in cell (1,1) a PictureBox (called Target) containing the image of a small target. The properties box for Target shows some very promising properties, Column and Row - and if you overwrite the values in the properties box, the PictureBox obligingly shifts to the corresponding cell position in th design. However in VB it is not possible to refer to Me.Target.Row or .Column - neither appears during coding in the menu of properties, and deliberately coding either of them produces an error like
Error 1 'row' is not a member of 'System.Windows.Forms.PictureBox'.
1. Why does the properties box show properties that cannot be altered programmatically?
2. How can my program move Target around in the TableLayoutPanel?
when adding picture to dynamic picturebox from my.resources in .dll a duplicate semi functional picturebox is added too, behind the picturebox i intended to add. has anyone seen this happening before or can provide any insight into this?
In VB6 I used some pattern of programming..I passed the picturebox as parameter to some procedure in some class and inside this procedure paint all needed graphics using this class methods.Now I want upgrade my application to vb.netBut all samples for line drawing show me how to draw inside paint event.[code]
I have a PaintEventHandler connected to a picturebox via AddHandler.
In PaintEventHandler I have coded this for writing the drawing to PictureBox1.Image:
Dim PictureBox1 As PictureBox = CType(sender, PictureBox) PictureBox1.Image = New Bitmap(PictureBox1.Width, PictureBox1.Height) Dim bmp As Image = PictureBox1.Image Dim g As Graphics = Graphics.FromImage(bmp)
... drawing something ...
PictureBox1.Image = bmp
Everything works fine but after running through the paint event handler and showing the picture on the screen it calls the painthandler again and again. It does not stop.
Replacing the code above with
Dim g As Graphics = e.Graphics
Makes it running. But then I cant save the Image to a file.
I have a program I'm working on that, for one of the features, allows the user to drag an image from a picturebox, into the main form space, anywhere they want. [code]...
When trying to drag the image from the CurrentTilePicBox, the very moment I move the mouse while dragging the cursor becomes a circle with a cross and won't drag and drop into the new picturebox.
Hey I am making a GDI++ game in vb.net. Now what I want is the monster(picturebox) to go after the player(picturebox). There Are No Vertical Walls. Only The Edge of map barriers. For example to get to the player the AI would have to go to the end of the ledge and either jump off and fall to the lower ledge or take the ladder down. There is no jumping, only falling and going up and down ladders and across the horizontal ledges. So How Can I make this pathfinding system?
I have a panel, which contaisn two Pictures.When the panel is mousehover the Pictures appears. When the panel is mouseleave the Pictures disappears.However, when I'm trying to pass the mouse between the Picturebox and Panel, the Picturebox disappears, because the panel doesn't detect that as panel area.
Private Sub Panel_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles Panel.MouseHover Me.NextIMG.Visible = True Me.PrevIMG.Visible = True End Sub
Private Sub Panel_MouseLeave(ByVal sender As Object, ByVal e As System.EventArgs) Handles Panel.MouseLeave Me.NextIMG.Visible = False Me.PrevIMG.Visible = False
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)
I need to plot some analog values read from the serial port.I plot them in a picturebox starting from left. When I reach the end of the control at the right side I shift all values to the left of a point and I plot the new point at the right, (I have some flickering but it could be acceptable). This is my plotting control.My problem is that I have to clear the control (picturebox) in order to plot the shifted graph, but the method Clear of the Graphics class clears everything inside the picturebox, even my grid.How can i make always visible a grid "in" my picturebox?
1.a transparent image with a grid over the PB? (the clear method cannot remove it)
2.an image with a grid below the picturebox that must be with a transparent background to make visible the grid?
Ok, so I have a new challenge for the D.I.C. Heads. I'm making a simple little game using VB controls. I know it's not the best idea in the world but it'll have to do for now!
Here is whats happening. I've created a class that inherits the PictureBox control that I want to use to place my game pieces on the playing field.
Dim pbArmyUnit(0) As ArmyUnit ' ArmyUnit is a Class that inherits Picturebox now I create the playing pieces at runtime as needed and append them to the array. Player currently buys the units and places them on the playing field.
[Code]...
On a side note how can I look at a stack of pictureboxes all created at runtime to determine whats at a particular location? Example. I move my army unit over top of the picturebox that shows my forest. How can I tell what picturebox I just moved on top of? does that make sense? I don't need code for this just directions on looking at the right info so I can figure it out.
I am creating my terrain at runtime as well since it's randomly generated. and I'm basically making an array of 192 pictureboxes with the appropriate terrain image as well as some other modifiers. Just like with my armies above I've inherited picturebox and created a terrain class array, this way I'm able to add my movement modifiers etc, directly to the picturebox I place on the screen. It's these pieces of terrain that I want to be able to check before allowing the unit to move into them! to get movement costs etc.
I have a picturebox on a form. The image in the picturebox is actually a report. I want it so if the user clicks on it it will zoom larger --- while the picturebox remains the same size. Of course, the entire image will no longer be seen. So I also want to be able to drap this image around with the cursor. The examples I've found for picturebox zooming cause the picturebox itself to get bigger and smaller. I need it to be like an Access report. Click on the report and it gets bigger. Click again and it goes back to the full image. Does anyone know of an example or tutorial in VB.Net for this type of zoom-with-fixed-size picturebox function?
I am working on a small desktop form in VB 2010 and am trying to place a pictureBox with an image in it, next to another pictureBox already located on the form when the user clicks a button.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim tool As String
[Code]....
But for some reason the newPictureBox with image from "ptext" does not show up on the form. When I specify the new Point to be something like, (50,50) instead of getting the first pictureBox coordinates, the new pictureBox shows up in the right place.
Am I using System.Drawing.Point wrong? Or is there some other error that I'm making?
i would like to drag a picturebox inside of another picturebox and I think I already made it. the problem is the object I am trying to drag is behind the picturebox ....how to I make it so that it will appear infront of the picture box? also when I drag it out again of the picturebox I would like to restrict it so that dragging out of the picturebox is not anymore possible?
HTML
Public Class Form1 Dim dragging As Boolean Dim mousex As Integer Dim mousey As Integer
I am trying to make a picturebox follow another picturebox. But I also want this picturebox to be able to collide with the other picturebox if the picturbox stops. I hope this is not too confusing. I cannot figure this one out. The code below is probably nothing like what I should be doing, but i cannot think of any other way to do what I want.
PictureBox1.Location = New Point(PictureBox2.Location.X) PictureBox1.Location = New Point(PictureBox2.Location.Y)
I have two Picturebox and both should be transparent background, but the real problem is both transparent for form background but not over each other .
I am making pictureboxes as enemies, and i have a picturebox that that user controls. I want the enemies to move towards the user's picturebox, regardless of their position (Which will be random!).
I have a DateTimePicker in my form. When I set a message box to force user not to chose a date grater than today two message boxes shows up one after another. Below is my code -
Public Class frmLargestSmallest 'Declare public variables Public intInput As Integer Public intArray(9) As Integer
[code]....
I am trying to make an application where the user inputs 10 numbers in an array. The application then displays the highest and lowest values of the array. My code so far just display zero as the result.
I have created a com dll in Visual Studio 2010, vb.net. The dll is supposed to compile in the framework 3.5 for X86 processor. Should run anywhere right? I reference this from an Access application using vba. All works well on my development machine. I must also say that the project references an eBay sdk dll called ebay.service.dll. This file supports converting the .net commands into the appropriate soap commands to communicate with eBay.
All this works well on the development machine when compiled. The files in the bin/debug folder are eBayListing.dll, eBayListing.tlb, and eBay.Service.dll. I can reference eBayListing.dll from Access and everything works well on the development machine. On the laptop I registered the eBayListing.dll and eBayService.dll using the visual studio regasm at: C:WindowsMicrosoft.NETFrameworkv2.0.50727RegAsm.exe. Both files appear to register as I get the registered message from regasm. I run this as administrator.
When I try to set the reference from the Access application in the VBA references I can only see the reference to the file as it was on my development machine. I can tell because it has the path the the bindebug file. I don't see the version of the dll supposedly registered on the laptop. The file obviously isn't there so I browse to the file on the laptop that is theoretically registered, but get an error.
I am trying to create a basic tracker where and person clicks on button1 to display the start time in textbox1, button2 displays the stop time in textbox2 and texbox3 displays the difference between stop / start time. Textbox3 keeps showing 00:00:00 and not the difference between textbox2 / textbox1. I am having difficultly getting the format for the final textbox. I have look at Elasped Time and Parse, but without sucess. I have displayed the code below -
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
