Any Function To Know Location Of Certain Pixel?
Nov 22, 2011Is there any function to know the location of a certain pixel.
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Forms :: UnBound DataGridView Location - Grid Must Be In The Correct Location According To The Pixel Point?
Dec 19, 2011i am using an unbound datagridview so i can dynamiclly add rows. all that is working fine. but the grid is not is the location i have coded.. i am using the defualt form as a base then coding the unbound stuff in.. should i just create a blank class file and do everything? the only problem i am having is the grid must bees in the correct location according to the pixel point that i have given it. Right now it is placing the grid at point (0,0) no matter what point is entered on the line for location. so what am i missing??????
View 3 RepliesConvert .net Location Pixel To Vb 6.0 Location Format?
Apr 3, 2009i need to developer project from vb.net to vb 6.0 and i have already project in vb.net and i have to convert in into vb 6.0 but i need same GUI format,but i get problem that is in vb.net control height and weidth is in pixel formate and there is vb 6.0 i dont know so i copy control's height and weidth or size so i got there is difference in vb 6.0 so any one have idea how to convert vb.net location pixel to vb 6.0 location format .
View 1 RepliesGet The RGB Color Of The Pixel At The Cursor Location ?
Nov 1, 2009How can I get the color of a pixel at the location of the cursor? I know how to get the mouses position using MousePosition but I can not figure out how to get the pixel color at that location.
View 4 RepliesBuild Graphics And Try Different Colors For Pixel Location?
Aug 6, 20091. Is there either a program or a way of using vb.net where I can load an image and get a reading of every hexadecimal value for every pixel location in the image? Quick example, sometimes, I'll load an image into Microsoft paint and I try to determine which colors are being used in certain locations of the image but all I can do is guess.
2. If it is possible (especially using vb.net), is there a way to build an image by manually coding hexadecimal values for every pixel location, then, saving the image? The thought here is that I can build my graphic and then try different color schemes until I'm happy with its presentation.
Getting Pixel Value From A Selected Location In A Picture Box Display
Feb 15, 2010I am writing a program in VB 2010. My computer is an E Machines dual processor Intel Celeron running at 1.8 gb/sec with 2 GB of RAM. I have a 1680 X 1050 display and the graphics driver in the computer is fully capable of utilizing this display. I am running Vista Home Edition.
The purpose of the program is to analyze a large number of infrared and visible light images from the geostationary satellites GOES East and West. Note: These images are TIFF and range in size from 400 KB to 70 MB. The pixels are either 8 bit or 10 bit depending on the image type.
The program allows the user to select a series of images from a file folder. These images are then displayed in a picturebox. A map covering the same area is also available to the user. The user may then move the cursor, via the mouse, to a selected location on either the map or in a picture. With a left click that location in terms of image coordinates is used to compute the geographic coordinates of the selected location. These coordinates are then displayed for verification purposes. So far, all of this works properly.
The next thing I need to do is to determine the brightness value of selected pixels in the displayed image. Because brightness is related to temperature this permits a detailed examination of cloud temperature and density in each image. By making this measurement at several different wavelengths (provided by images taken at different wavelengths) the program will then compute the atmospheric extinction factor at each selected wavelength and from that derive the atmospheric transparency function.
Here is where I have run into problems. I cannot find a way to extract the pixel value from the selected X, Y values input either by cursor position or by direct entry. I have tried the various approaches described in the documentation but I either get errors or a pixel value that is unrelated to the image. The following is a section of code that I am currently trying.
[Code].....
Picture Into Picturebox Based On Pixel Location?
Sep 30, 2009i have a chart of images.. and i want to load individual images into picturebox from that chart..chart = big image, eg alphabet chart. (yes i am creating a game for my small nephew.. pictures and alphabet) now, i want to show different pieces of images into picture box. like the A box, b Box etc one option is to cut the chart into pieces, save each piece with different filename and load individual filename into picturebox.but i saw somewhere that we can use pixel location to load images into picturebox..as i recall it required two pixel location, 1 was upper left and other was lower right.. and passing that pixel locations would load the rectangular image between those pixel locations into picturebox?
View 9 RepliesVS 2008 : Get The Color Of A Pixel At Current Mouse Location?
Jul 29, 2009I would like to get the color of a pixel at my current mouse location, when the mouse is clicked. The location is anything on the screen, not just a jpg, gif, png, etc..
View 1 RepliesVS 2010 Move Mouse To A Pixel Location Of A Program?
Mar 10, 2012How can I move the mouse to a pixel location of a program?[code]I know it doesn't work, but I'm trying to make it easier to understand what I'm trying to do.
View 5 RepliesTranslate MouseEventArg.Location X,y Pixel Coordinates To Custom Grid Coordinates?
Nov 29, 2010I want to translate MouseArgEvent.Location (x,y) coordinates into my custom graph coordinates. Mouse Y coordinates increase from top to bottom while my grid's y value increase from bottom to top. Given my following code, I would need to create 21,500 separate conditional expression for 100(y) x 215(x) possible coordinate locations for my grid.
Sub OnMouseMove(ByVal e As System.Windows.Forms.MouseEventArgs)
If e.X > 48 AndAlso e.X < 50 AndAlso e.Y > 397 AndAlso e.Y < 399 Then
MessageBox.Show("about 0,0")
[code]....
Load A GIF File, And Start With The First Pixel And Check To See If That Pixel Color Is Closer To Black, Red, Green Or Yellow?
Jan 30, 2009I would like to load a GIF file, and start with the first pixel and check to see if that pixel color is closer to Black, Red, Green or Yellow, then take what ever color it closest matched to and output that color as a number, 0, 1, 2 or 3. So just for a small example a 5x4 GIF would be converted to something like this: 0112223322220111332?
View 13 RepliesDetermine The Pixel Width And Pixel Height Of The Largest Image?
Jul 4, 2010How do i determine the pixel width and pixel height of the largest image i can paint onto the graphics object of a printer while inside a printpage event?
Imports
System.Drawing
Class
[Code]......
Interface And Graphics :: Get Pixel Color Of A Pixel On Screen
Sep 13, 2007Is there a quick way to check the color of a pixel on the screen?
View 2 RepliesChanging The Position Of A Form, Pixel By Pixel?
Jul 20, 2009during the development of my project, i've fall in the need to change the position of some forms, pixel by pixel using a timer.Now, i've checked that the movement is very fluid when form is not very heavy, when it contains few elements, but when it has a lot of elements inside, the movement becames nervous and not fluid, the movement becomes jerky.
View 5 RepliesGet Location Function Based On GPS
Oct 20, 2010I am writing a windows mobile application based on GPS technology. everything is ready but I need the function which is used to retrieve GPS location coordinates (latitude and longitude).I declared latitude and longitude, but now I need the function of GPS to put it inside a button I created, get longitude and latitude values and save them.
View 1 RepliesMDI Forms Location/Class-function?
Jan 8, 2009I want to create a function (class?) that will have stored the coordinates(values) of my mdiforms, so I can call it whenever I want to dispaly the mdiforms. I want to avoid retyping again and again (in every mdi form) the above Me.Top=5 Me.Left=150 on forms load.
View 2 RepliesGet RGB Pixel Color Of A Pixel On The Screen?
Jul 29, 2010How can I find out the pixel colour of a certain point on a web browser. For instance,WebBrowser1.getPixelColor(0,0) would get the rgb colour value of pixel 0, 0.It doesn't have to be rgb it might be hsl or whatever.The web browser is showing a local web page that is hosted on a network. If there is an error then the screen goes all grey. What I want to do is, if this does happen, display an alert message like - "An error has occurred
View 3 RepliesGet The Pixel Colour Of A Pixel On The Screen?
Apr 16, 2011I have an empty picture box with the background colour set to the transparancy colour. How can i get the colour of the pixels within the transparant picture box so that i can create a bitmap of the transparant section of the form?
View 2 RepliesSubString Function - Index And Length Must Refer To Location
Feb 13, 2012Consider the Statement:
Dim pstr As String
FileOpen(2, pfilepath, OpenMode.Input)
pstr = LineInput(2)
pstr = pstr.Substring(13, pstr.Length)
Label1.Text = pstr
FileClose(2)
And it is Giving me the following error:
Index and length must refer to a location within the string. Parameter name: length.
Substring Give Error - Says Index And Location Must Refert To A Location Withing String
Oct 22, 2011I got a error when I run this code:
Dim btch As String
Dim LeftPart As String
[CODE]...
It says index and location must refert to a location withing string
Where To Place Database In VB Project And How To Access With C:,D: Etc Means Open Location Not Fixed Location
May 3, 2010dim cn as oledbconnection
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:valid.mdb")
[code]......
2 Group Box Components And Both Are Same Size,font,location And Visible Is False - Both Component Cannot Locate At Same Location
Mar 13, 2012I have 2 group box components and both are same size,font,location and visible is false. When i click button2, the groupbox1 won't appear(the group box2 is on bottom n group box1 is on top).
Example:
button1
groupbox1.visible=false
groupbox2.visible=true
button2
groupbox1.visible=true
groupbox2.visible=false
Because i want to show the different,so the location have a little different(actually both are same location). I think my code is no problem. The problem i guess is both component cannot locate at same location?
Comparing The 2 Images Without Actually Comparing Them Pixel By Pixel?
Mar 20, 2012I have the code below on a timer( "b" is a bitmap )
If
Not (Clipboard.GetImage
Is
Nothing)
[Code]....
The problem is that it raises the event even if the picture didn't change.
comparing the 2 images without actually comparing them pixel by pixel (too slow to do the job)?
Error - You Cannot Start Application <App_Name> From This Location Because It Is Already Installed From A Different Location
Dec 10, 2009we have a user that my program works fine for.. and another that it just crashes for.. they get this error
"You cannot start application <App_Name> from this location because it is already installed from a different location."
then they run it up again and it comes up.. and then just closes..in reading some stuff online it says its a framework 2.0 sp 1 issue ?these pc's have 3.5, but my program uses all 2.0 stuff..so is this a 2.0 sp level issue ? or should I make my programs start to use framework 3.0 instead ?
VS 2008 Round E.Location To Nearest Grid Square Location?
Nov 9, 2009I was using this old method of creating a bunch of rectangles when I need to get the location of a certain point within a grid so I could draw images on the grid. The thing is, I don't want to use rectangles, I want to be able to just round the location as if I were using rectangles. I need it to be able to round the point (66,70) to (50,50) so if you can imagine a grid and the mouse position being within that square in the grid, I need to get the location of the upper left corner of that square.
View 5 RepliesCannot Start Application Shell From Location Because It Is Already Installed From Different Location
Jul 21, 2009I have encounterd a problem when trying to re-enstall a program i have writen in vb 2008.I get the following message:"You cannot start application Shell from this location because it is already installed from a different location."This program is to be used on many workstation computers and i need to be able to update any changes by just reinstalling the program, no uninstalling needed first. If the program was installed from a cd first and needs to be updated from a flash disk this error will be a problem, if the update is from a cd as well then there is no problem.Is there a way to change the installation package to ignore where the program installs from and just update itself?
View 2 RepliesChange The Location Of A Label ( Middle ) To Another Location When A Key Is Pressed Down?
Jan 27, 2010I'm currently working on a project that has a simple game . I want to change the location of a label ( middle ) to another location when a key is pressed down. But there is something wrong with the first of the If statement .I've underlined "point " because it has the error.
Private Sub Space_Navigator_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown If e.KeyCode = Keys.Up Then If middle.Location = [u]Point[/u](156, 655) Then middle.Location = New Point(156, 547)
End Sub
Copy A Picture From One Location And Paste It Into Another Location?
May 3, 2012I'm trying to copy a picture from one location and paste it into another location however VB throws out the following error
Exception from HRESULT: 0x800A0046 (CTL_E_PERMISSIONDENIED)
both locations are on my local computer. So not sure what is causing the problem.
Here's the code
Module CPASU_SPC
Sub Main()
Console.Title = "MOARW Programs"
[Code]....
Copy Folder From Location To Another Location?
Dec 18, 2011How to copy folder with its content from location to another location defined by FolderBrowserDialog
View 7 RepliesHow To Pass A Function To A Function Is Functors/function Objects Avaiable In VB2010
Oct 12, 2011I want to make an numerical integration method with takes in an analytic function and integrate it over a specific interval. For the numerical integration procedure I want to use some procedures in nr.com. The problem is that these are programmed in C++ and they uses functors to pass a function to the integration method. How can I do this in VB 2010?
I want to initialize the function (i.e. set a=1,b=0 for function y(x)=a*x+b) and then pass the function to the integration method. Then when the integration method call the function it only calls the function with one parameter (i.e. x since a,b is already set)
What is the best way to do this in VB2010?I want to make a general integration method where I can pass any single valued function and integration limits.
I have just started using VB, and from what I have found so far it seems like the tools you have is
- to us a delegate for the function
- to use a lambda expression for the function
- send a pointer/adressOf
- to create a function class/structure and submit this to the function
As for now I am most inclined to create a function-class. But I am not really sure how.F.ex. I make different classes for each "uniqe function" I want to integrate, but how can I pass them to the integration function when I need to specify the argument type in the integration-function-call?This seems like a basic problem which applies to many Math operations, so I think it would be very useful to clarify this.