i am new to vb. i have created a program which has work areas/image areas. i can create as many as i like and i have created a code to delete a work area. but i cant delete more than one and i cant find out how to fix the problem i will post my code so you can see what i have out so far,
[Code]...
i have a program with the ability to save view and scan images. i am currently working on making work area's. so i have two list box's. listbox one is for the image area name. listbox2 is to list the pages in selected image area (mouse click). i have created the form to show you and i will post a link below. i have started trying to do it but have got stuck. i use an input box to give the image area's names. but thats as far as i have got at the min.
i need to be able to make image area's and list/view the images in my picturebox. plus i would like to create a folder or how ever many the user makes behind the scene thats called whatever the image area is called and in that folder is the images the user has saved in that folder. sorry if this is hard to understand. i have asked on another forum but i didnt get what i wanted it to do.
[URL]
i have gave you a link so you can see what my form looks like so you have a slight understanding on what i want it to do. its work in progress so sorry if it looks rubbish.
by the way i can save an image but it only saves it one certaint place and i cant save more thasn one as it replaces the image. and as for the scanned image thats the same.
How to zoom a particular area of Image in vb.net
Like e.g.,(50,50,100,100)
how to zoom this small region of an image I Already know how to zoom an image but not how to zoom a particular portion
I'm storing images in a List Of Image. When I want to clear/remove all the images it contains should I dispose & set each item to nothing before using .Clear? Or can you just call .Clear? I'm doing it like this for now...
' remove all images in list of image named "images".
For i As Integer = 0 to images.Count - 1
images(i).Dispose()
images(i) = Nothing
Next
images.Clear()
I'm working on a small project for the fun of it. One of my hobbies is astro-imaging and I take pictures of planets, nebulae gallaxies etc . One of the more challenging targets is the International Space Station. I have had some success with the ISS by manually aiming my telescope as the Station moves across the sky.
What I am trying to achieve is to write a program that will lock onto the brightest area of a webcam image. If the brightest area (which will be the ISS) is off center, then commands are sent to the telescope to recenter it.
So far I have been able to write code that talks with the scope, and I have been able to get a webcam stream to show on a Form.
So the last piece of the puzzle (well I am sure there will be other things that have to be worked out) is to identify the brightest area of the image. I am scratching my head as to how I should accomplish this.
I'm thinking I should dump pixel information into an array maybe, and establish which line and column has the brightest average values (I could then draw a cross hair over the image).
I need to load a picture and save some areas into a database (like you do it on Facebook when tag peopple into pictures).I need to save de selected area and then, in another form, show the picture and the selected areas in blue?
View 1 RepliesI am currently working on image cropping software. Any idea how to make image under rectangle to be clear and outside area translucent?
View 5 RepliesI'm working on a Vb.net project. I have a form with a RichTextBox or a simple TextBox control. It contains hundreds of text lines, so the control has to be scrolled.
I want to send to a printer only the lines that are currently seen on the control window.
That is, I want to convert what I see into an Image and then draw that image thru e.Graphics.DrawImage.
As you can see, it could also be the case of a ListBox, a TreeView or any other scrollable control.
How can I grab that rectangle area and then convert it into an Image? The rest I already know how to do it.
Is it possible to scan the pixels in webbrowser for an image that was loaded into my resources and then click on it? What I want to do:Have a reference image in resources Scan webbrowser1's PIXELS to see if it appears on the current page,Then if it does, Click somewhere in the region of the image.I do NOT want to search for a .jpg .png .gif .bmp etc. in the webbrowser.
View 10 RepliesI am using the following code to place a rectangle around a form / form control, however what I want to do is make my screen grey and only the form / form control area be displayed in colour.
Code:
I have googled for ages trying to find something on this, but with no luck.
To illistrate this better they are using the same functionality in snagit 10, please see below link to a page that has a video link showing this (23 sec into video)[url]
how to create a specific area to drag my form (ie: image, label). I found some code that works, however you can click anywhere and have it drag...
Const WM_NCHITTEST As Integer = &H84
Const HTCLIENT As Integer = &H1
Const HTCAPTION As Integer = &H2
[code]....
Another program I am working on for fun, I am basically shuffling a list inside a listbox, what I want to do is delete the rest but not sure how to go through with that. At the moment I have this: [code] Just contains the code, declarations outside weren't included.So anyway, once clicked, it will call on the function to basically shuffle in a for loop, I was wondering if I should (or how should) create another function and call it in the click button or have just a loop in the click button so it deletes half the list. What I am doing is I have 20 list of items, I want the program to shuffle the items and then deleting the lower 10, meaning, if I had 10 items and wanted 5 top, I'd want: 0, 1, 2, 3, 4 and deleting 5, 6, 7, 8, 9.
View 7 RepliesI have to create an image that is to mimic a single clock rotating hand within a square area,and the user has to choose the width and speed of the rotation and the direction.i managed to create the square area with a hand inside,with this codes and variables,
(Dim Mygraphics As graphics = e.graphics
mygrqaphics.Draw Rectangle(pens.color x1,x2,y1,y2)
mygraphics draw line(pens.color,x1,x2,y1,y2),now i have to find codes and variables to rotate the hand or line within a square area.one point remaining constant the other moving.
Trying to set the viewable area to a smaller screen area and have it cycle through as the person moves using collision detection to move the backgroudn image. Here is the start but its off to a bad start so far.
Public Class Form1
Dim Mapx As Integer = 600
Dim Mapy As Integer = 2000
[code]....
Basically the forum size is set to 600x2000 but the client should only allow you to view 600x600. I want it to add +1 once you "collide with a invisable box I'll add and this will redraw the screen.
I designed a form and managed to fit graphics inside it. Picture box is 465 pixels high. Form1 is 500 pixels high. SnapShot of the screen verifies that the 500 pixel height is the overal height. It includes the upper Bar and lower frame. Is there an instruction to set the From's inner pixel size and not overal?
View 2 RepliesDoes anyone know if it is possible to resize an imagelist/listview image without repopulating the image list? I am using scroll bar to change the image size from 25 point to 256 point. When I leave the scroll bar the imagelist repopulates from the files list. This can be very slow when working with high resolution pictures. I don't want to limit the image size to 2 sizes by using large and small imagelist.
View 1 RepliesI have got two image folders namely a and b which consist of images of products. All images are save as there productid. how can can i find the images from a folder by passing there productid and save the images in a list.Dim AllImages As New List(Of String)
After saving it , how can i render those images one by one into string builder like
Dim imagecontainer As New StringBuilder
For Each image In AllImages
imagecontainer.Append("<img src="image" alt="" />") Next image
I am loading a series of JPG images into an image list then using that to fill a list view. My program is using ALOT of memory by doing this. What would be the easiest way to add the images but take up less memory/time?
View 3 RepliesI have an image list and would like to add a directory of images to the image list in my code. How would I do this? When I run the code:
[Code]...
I get an out of memory exception. Currently there is only 14 images so there really shouldn't be a problem.
After "searching and trying" my problem is still alive.I read the topics about this problem but I can't escape from it.[code]...
View 14 RepliesI've been working on a program lately. On the form load it loads a list box with a list of names from a .txt file. It's a sign in form, so when people click their name then the button it will write to a .txt file their arrival time, and the folder is their name. I can make it do it one at a time, but that's so inconvenient. I have the list box set so it accepts multiple selections, but I need to make it write the time for everyone.
how to delete the selected name from the list that would be extremely helpful, that way the person isn't signed in multiple times.
I have this code:
Dim xx as image
xx = image.fromfile(Fileloc)
picturebox.image = xx
And i can't delete the file even though I've loaded it into a picture box. If I add this line:
xx.dispose the picture box becomes a big red X. I only want to delete the images when my application is closing (they are temp files). So shall I just dispose them before I delete them?
i mean, if i have an update button for inserting images and i have got another navigator which adds information to the database, how could i delete a selected row in sql server database...In dataset, i used to remove a specific row in database by doing:
me.customersbindingsource.removecurrent()
So, this one doesn't delete anything when the image is included.
1.
[code]....
I have a button which when clicked, saves an image of any format from a picture box to a file.I have tried to come up with a code which can open the same file and delete any selected image but to no success.
View 6 RepliesI have got a listview and i added few items inside with a dustbin look-a-like image for remove item purpose. but now how do i make the user to click on the image n remove the item?i know how to remove the item with a button,but now would like to try using by image. anyone?
Here is the code i used for delete item with a button.
For Each lvItem As ListViewItem In ListView1.SelectedItems
lvItem.Remove()
[CODE]....................
i have image list like this : [URL]
so, i want to get image from that file, and display to PictureBox.
Dim myArray() As Integer = {a, b, c, d, f}[code]...
Based on the code above i would like to remove the largest and smallest element from the array list and then put it into a new array list.
I am trying to generate a script which handles more than 1 file from FTP. For example I have 4 files on the FTP and I need to have them saved locally and after that to delete them from FTP. I was trying and example for list and get but it is not working correctly.
Here is what I have:
Public Function GetFileAndFileList(ByVal StartsWith As String, ByVal EndsWith As String) As List(Of String)
Dim oFTP As FtpWebRequest = CType(FtpWebRequest.Create("ftp://testftp.host-ed.net/customer"), FtpWebRequest)
oFTP.Credentials = New NetworkCredential("xxx", "yyy")
oFTP.KeepAlive = False
[Code] .....
I have 4 files; it is working OK for 3 of them but the application crashes on the last one.
I have a MyList (List Of Longs) in which I need the check a specific relation between any two members of that list, if the relation-check returns true I need to delete checked member.I was used to do something like that with 2 For Next Loops, is there a better way. Would it even work that way with Lists?What is happening when an Item is removed from the List that has not been called by the outer For-Next yet? [code]
View 6 Replieshave an ArrayList of arrays and I am having issues iterating through it to delete cetain entries.I want to go through the entire ArrayList and check if the array at index 0 equals "". If it does, then put that into another array.heres the exception i get
Quote:
System.ArgumentOutOfRangeException was unhandled
Message="Index was out of range. Must be non-negative and less than the size of the
[code].....
