I need to capture image from WebCam in my .NET application which should work on both Win XP & Vista. While creating this thread, the forums suggested me 3 links that were helpful. I though I got the answer from one of them, but it worked spcifically on Win XP, not Vista.
I jus tneed to capture an image from the WebCam, rest all processing of the would be handled by my .NET code.
I'm building .NET application that uses DirectX API for web camera device I'm using DirectShowNet Library .
i want to capture the image when user clicks the snapshot button available on webcam.and then dispaly the image in picture box.pls help me out iam stuck with this issue.
I have a logitech webcam that I use to take pictures of customers to submit to a server/database. Utilizing AVICAP32.DLL calls, I was able to modify my VB.NET program to take these pictures via a button in my program.
My question is, it would me more convenient to my intended users to click the webcam button, instead of clicking on the button in my program.
Is this possible to do in VB.NET? and how can I do this?
If this is not possible to do with my logitech webcam than is there a Microsoft Webcam that can do this?
I'm trying to take a snapshot of a website and show the snap shot in my picturebox.
the only thing on my form would be the picture box and a button to take a snapshot.
I would like to be able to take a snapshot of an whole RTF document displayed on screen (and also whats not yet displayed below screen) and save it as a JPEG image, but I cannot work out code to do this in VB.NET.I can do it all manually by displaying the document on screen, highlighting all text displayed and copying it to the clipboard. Then I can paste it into 'Paint' and save it as a JPEG. But I would like to be able to do this programatically inside my program.
View 5 RepliesHow i can take snapshot of webbrowser and save it to C:file.png
View 4 RepliesBasically I need to be able to take a snapshot from a webcam.The webcam is known so I know what cam I am looking for and what I wish to connect to and it will be there but I can't find out how to take a snapshot from it and then be able to save it as a jpg?
View 2 RepliesI have been using the VB2008 express edition following Bob Tabors's 18 course lesson in VB 'snapshot 5'. I was starting lesson 14 on the RSS reader. This lesson adds the .mdf for the first tome. The .mdf file was unable to be opened due to some message about code 603?. The final requst is that the database be recreated. What would you suggest. I was not expected to run into this problem so quickly in the learning process. so be it
View 3 RepliesI have a third party GIS tool that I'm using to view maps with. Occasionally we have to take a snapshot of a portion of the map and dump it to a bitmap. The third party tool has a function that will give me the upper left and lower right coordinates of the area selected on the map. These coordinates come out as system.drawing.point objects.
The two point objects are then used to generate a new system.drawing.size object that will give the height and width of the area selected. The height and width values are passed to the constructor for the system.drawing.bitmap.All this works fine most of the time. Sometimes, however, when the user selects a particularly large area, the bitmap constructor bombs with a 'parameter is not valid' error. There isn't any documentation on this error, but I'm assuming it means the height and width are too big.
So what I'm wondering is... is there some way to check my height and width values prior to creating the bitmap and make sure they are in acceptable bounds?
I am trying to take a snapshot, or a copy of a control, for a bitmap. I'm wanting to do this to a listbox, but part of the listbox may be hidden.On the mouse_down event I need to get the snapshot of the whole listbox (even though parts may be hidden behind other controls, I need the whole listbox) and draw it to the screen in the same location as the original listbox (but the hidden parts still stay hidden behind the other controls on the bitmap).
On the mouse_move event I need to move the snapshot up/down based on mouse movement. This also moves the listbox up/down and this code is done. I will just move the snapshot of the listbox the same way as the original listbox.On the mouse_up event, I will dispose the bitmap and display the original listbox again.
I am doing this because moving a listbox up/down is really messy. It's a custom drawn listbox and looks horrible moving, so I figured if I could snapshot it, move the bitmap while visible, and listbox behind the scenes, it will flow smoothly and no one would notice I am scrolling a bitmap instead.
Double buffering the form and listbox didn't help . I've done some graphics.drawstring before, but not much on other graphics.
I need to take a snapshot of a form which is not necessarily visible on the screen. I need to save that into a Bitmap object. I cannot use Graphics.CopyFromScreen() because if there was anything obstructing the form, it will appear in the snapshot taken.
View 6 Repliesi have seen google chrome, whenever you open a new tab, it will show you the last 8 pages that you have visited. I want to do a similar thing, except i have a vb.net code behind the .aspx file, which shall give me a list of URL's called form the database. When the page is loaded the URL's are displayed on it. what i need my code to do is to pick up these URL's, on the background open a web browser, take a snapshot of it and save it, and display it on the screen. dont recommend IFrames cause I need a snapshot and not an actual running site in the small snapshot.
View 2 RepliesI have already incorporated DirectX into a program and set the owner to a picturebox which so far works great, but all it does is set the place/dimensions of the directx window to the picturebox... it doesn't actually USE the picturebox for the video so if i pause the video or set a timeframe I can't use the picturebox frame/image to pull information from. So what I want to do is when i pause the video at a certain frame I want to be able to actually take a snapshot and populate the picturebox with that image and then be able to save/manipulate it like a normal picture. I have read some examples and coding on screen snapshots using DirectX.3D, but not audiovideo. Not sure if its the same or what. I know normally you would start out with CODE, but in this case I have NO IDEA exactly where or how to start it.. I tried Bitmap options with the screen area/location, etc... but was getting errors and exceptions..
View 2 RepliesI want to capture a still picture in any format like .png,.jpg,.bmp etc. using a webcam.And want to save that in directory.
View 3 RepliesI would like to connect a webcam to vb6.0 or to vb.net and wolud like to take a photograph which is then to be stored in access / sql database.
View 1 RepliesI use VS2008 with Visual Basic and VB.Net. I am writing an application to save videos from a webcam, and I've found several examples that provide the basic functionality, so that I can now start and stop the webcam, and save a video as a .avi file. However my interface is still clunky: when video capture starts following
SendMessage(hWnd, WM_CAP_SEQUENCE, 0, 0)
then the window is locked and the [Stop Capture] button doesn't function, so I need to exit the window to stop capture.The documentation at Video Capture [URL] has a lot of methods that look useful, and I think that I need to link up a callback function to allow [Stop Capture] to function, but I can't figure out from this documentation how to send a WM_CAP_SET_CALLBACK_VIDEOSTREAM message to do this. I don't know how to control the formats so that I generate video files that are concise enough for web use - changing the frame rate or dimensions seems to have absolutely no effect Is there any general tutorial that will cover all of the messages in AVICAP32.dll, and show me how to implement them in VB?
How can I have my VB.net application take a picture of me from my webcam? Nothing too complicated,
View 2 RepliesI'm trying to take a picture from my webcam when the user clicks a button on a Form on a Windows XP Machine.
I tried going through several threads, but couldn't find the solution I was looking for. Most of the threads involved matters (and code) too complex for my requirements, or had bugs when I reproduced the code in my editor window which I was unable to resolve due to my lack of knowledge in I/O related programming.
So far the simplest solution I could find was this one:[URl]...but after using his solution in my editor, it says 'type WIA is not defined', despite adding a reference to Microsoft Windows Image Acquisition 1.01 Type Library.
how to use webcam in a form in vb.net, pls provide me the sufficient information
View 1 RepliesI wrote some software that use the AVICAP32.dll to do a spot of video capture.All was going well till they went and bought a laptop with a built in webcam.Now my software picks one a random and uses that for the video (somewhat annoying to say the least) Can anyone tell me how to pick a camera to use,I suspect it is related to DVM_DIALOG but my experiments have not been too successful.
View 1 RepliesI have to develop an application where I have to stream my webcam over lan. I have a server where my webcam will be connected and when requested I have to send my webcam over lan. i need to view the server webcam from another network pc.
View 4 RepliesI am playing around with using a webcam in a program to have the program automatically target key things within the webcams frame. I was just wondering how I would go about getting the webcam to be "used" within the program.
View 25 RepliesIs there any Visual Basic SDK that will let me scan a barcode from a webcam, not an image? I have seen some that read from files, but this is not what I am looking for. If possible, I would love it if this is free!
View 2 Repliescode snippet in visual basic 2010 to automate the webcam to click a picture based on if any key is pressed on the keyboard?
View 1 RepliesHow to use GDTwain control in VB.net
View 1 RepliesI have swann webcam Mac IP cam network camera...its connected to the RJ-45 connector....I want to capture images after every 10 sec. from this and save it in to sql database..[URL]
View 6 RepliesI'm currently working on a project which is basically Server-Client based. Client is standalone VB executable file and Server is web based.The program is supposed to use webcam as video capture device, stream video footages to server (on website - live feed) and allows users to manually save captured videos into their computer.Thats basically the brief description of my system. I'm starting off working with VB right now and website after I'm done with VB.I'm new to VB, this would be my 1st project on it. I've looked for available sources online and found several VB apps which lets me capture image file through my webcam. Also on MSDN forum, i found recommendations on using "DCAM Server" to stream videos on website but I'm still not sure of how to configure the settings to make it work properly, and of course, don't have a proper website for it to work with yet atm. Also realise I'll need to integrate some .dll files or activeX functions to use video capture function. I don't really know how to use these yet rite now.
View 3 RepliesI Am Trying To Get A Webcam's Frames, I Can Get The Frames Succesfully But I Cannot Preview It.
I Mean, The Program Can Succesfully Record A Video To My Local Disk, But It Doesnt Preview On A Picturebox.
But This Isn't So Important, I Don't Know If I Can Change The Resolution Of That Captured Video?
I Mean, I Have An HD Camera, But It Doesnt Record On HD, It Just Records The Right Top 640x480 rectangle of screen. So I Mean It Doesnt Even Records Me, It Records My Back...
Is there any code to test the webcam if it's on or off ?. i mean, i need a code that telling me if my webcam is on.
View 2 RepliesWhat is the proper way to connect a webcam into our system?
Purpose: To record / save a video files using a webcam
Objectives: To Learn Advance On VB.NET Languages
Significance Of The Study: For being basis/example to us programmers especially to all beginners programmer.
