VS 2008 Find Pixel Color In Picture?
Oct 4, 2009
I have a JPEG picture from my digital camera and I want to find the color of a given pixel, say x=10, y=10. How would I go about doing that? I have searched around on the form but nothing is working. I have loaded the picture into a picture box but dont know where to go from there. Also is it possable for it to give me a number corrosponding to each color instead of 3 numbers, one for red, one for green, and one for blue. I am eventually going to be using this to scan through many
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Aug 15, 2011
I have drawn a grid in vb2008 so that each rectangle represents a 15 min period of a day. Time slots are shown by filling in the grid in different colours using the draw rectangle method. No problem so far. Now I want to discover the colour of any given part of the grid to prevent an overdraw.
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Dec 14, 2011
1. Let's say I have two buttons, one that draws a random circle (random size and position) and one that draws a random rectangle. How do I manage that?
2. How can I find the color of a specified pixel?
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Jul 15, 2009
Is here quick way to find pixel color = 0 in rectangle (0,0,10,10)?For example auto it has PixelSearch ( left, top, right, bottom, color [, shade-variation [, step [, hwnd]]] )Is here quick way to find pixel color = 0 in rectangle (0,0,10,10)?
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Aug 24, 2009
I'm trying to figure out how I would find the color of a pixle.
Say I wanted to find RGB(255, 255, 0) and get the X, Y, position of it, how would I do that?
I was thinking of a loop with BMP.GetPixel, but I wouldn't know how to check. It's not compatable with RGB.[code]...
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Jan 15, 2009
I am trying to make an kinda autoclicker when the desired color is found. I am using a class to make an screenshot of the screen.
VB
Public Class CaptureScreen
Private Declare Function CreateDC Lib "gdi32" Alias "CreateDCA" (ByVal lpDriverName As String, ByVal lpDeviceName As String, ByVal lpOutput As String,
[Code].....
Now I wanna make an functions that find the a pixel with the matching color I put in as RGB in 3 textboxes 1 for R etc.
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Mar 16, 2010
I have put a fair few hours into this now and have had no luck, i found this piece of code on the net that seems to offer exactly what i need.[code]...
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Jul 15, 2009
I need help to find pixel color anywhere on the screen by coordinates (for example pixel 377, 496).
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Nov 8, 2010
How To Find Screen Pixel Of Choosen Color?
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Jan 30, 2009
I 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?
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Sep 13, 2007
Is there a quick way to check the color of a pixel on the screen?
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Oct 20, 2009
I'm trying to work up a "Pacman" like game. I used multiple (Blue) RectangleShapes to draw a maze on Form1 and added a Timer and KeyPress event to show motion of the Picturebox ("PacmanImage"). The "Pacman" image changes depending on the direction it's travelling (also opens/closes mouth). Up/Down/Left/Right (and closed mouth) images are stored in imagelist1.
The maze has been set up with just enough clearance for the Pacman to fit between the walls. How can I check for any part of a Blue wall (RectangleShape) in the path of the Pacman? - I was thinking to take the position of the PacmanImage Picturebox and check (depending on the direction of travel) for the existence of a blue color in the appropriate rectangle on that leading edge. Ie: left travel would look at a rectangle defined as (x-1,y) to (x-1,y+25) and try to find the color blue where x/y are the top left of PacmanImage and it's image size is 25x25. Not sure how to do all this, but I think it's the right idea...
The ImageList has index/picture: 2/PacDown, 3/PacLeft, 4/PacMid, 5/PacRight, 6/PacUp (Indexes 0/1 are used for two additional pics not used for the motion of the Pac).
Code So Far:
Public Class Form1
Dim LeftRight As Integer = 180
Dim UpDown As Integer = 103
Dim Increment1 As Integer = 5
[code]....
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Jul 29, 2009
I 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..
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Jul 29, 2010
How 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
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Aug 6, 2009
I want to make a small application for my web designing needs that will display the color of the current pixel under the mouse pointer. I need this to work on the entire screen (no matter what form/application is in focus) and it needs to update in real time.
I'm not worried about the math or working with coordinates, but I don't know (and can't find) anything that might get the color of the pixel under the cursor on any form. I've found a small number of VB6 examples, but I'm with .NET 2008. Does anyone know of a method or anything (DLL even >.<)
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Apr 3, 2009
Does anyone have any code snippet on how to get the pixel color of an hwnd using GetDIBits and print the result as a RGB value? I used copyfromscreen method and getpixel but it cannot processes it in 1ms timer interval.
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Mar 12, 2009
In either of these (preferably Vb6), is it possible to replace a specific pixel color with a defined color? For example, if i scan my screen for 100,200,150, is there a way i can replace every instance of that with a specific color?
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Jul 6, 2011
I am running a program that is connected through the internet and i gets disconnected at times.wanted to know how this would be to examine a color of a pixel , If the colour turns changes, my mouse will move to reconnect
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Oct 4, 2010
I've read all of the examples for getpixel using bitmaps. I'm not using bitmaps.
I'm drawing simple shapes to forms and pictureboxes.
I need an example of how to get the color of a pixel (x,y) for use with forms and controls.
how to get the color of a pixel (x,y) on the screen would be helpfull to.
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Jun 3, 2012
Possible Duplicate: VB.NET replace pixel color of picturebox image i want to extract square from full picture full pic: [URL] i want only this: [URL]
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Jan 13, 2008
How do i detect the color of a pixel ANYWHERE on the screen (not just in a picture or on the form). do i need a dll or something?
(politely) can someone help me write a function that returns the color of the pixel in argb?
for eg public function(x,y) as color ?
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Apr 17, 2009
i am working on a project in vb.net 2003 and i want to get the color of a pixel when i click on the image loaded in the picturebox. i ve tried anything but nothing seems to work...
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Oct 8, 2009
I am creating a custom tooltip label. My problem is auto resizing it (particularly height).The thing to note here is that the label i am using is an infragistics label, and i can have different fonts and formatting inside the label which means i cant just measure the text height based on the font because the label will contain multiple fonts.The only thing i can come up with is to make the label the height of the screen, and then perform a loop which scans the colour of each row of pixels starting from the bottom, decreasing the label height each time until it finds some pixels which <> the backcolor of the label (which would indicate that there is some text there).This is the only reliable way i can think of to make this happen, but im having trouble finding out just how exactly to get the color of the pixel at the given point.I did find one method of getting the pixel color, but the problem was that it when i requested it in the form_load it didnt return the right color because the screen wasn't painted (i guess).
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Feb 9, 2011
The title basically states it. Is there a possible way to do this?
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Apr 5, 2010
How would i get the RGB color of the pixel the curser is on?Attributor 2.0
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Jun 25, 2010
I've recently been working on some VB.NET programs, grab the value of the color of a pixel on my screen(Out of my WIN32 Application).
I need this so I can make a little bot that automatically pushes buttons for a online game called "JamLegends"(http:jamlegends.com). Its kind of like Rock Band, and if I can grab the color, then I can simply used 'sendkeys' to press buttons to make the bot work.
Edit: This is for a project in school. We need to make something that will make a program that will make something easier to work with or use(In my case, JamLegends). I have nothing to work with, I've researched a bit but I found nothing that can grab pixel color values.
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Jan 25, 2008
What I want to do is get the color of a position on the screen. I'd rather not capture the whole screen if I don't have to, just one pixel's color. I was trying to use GetPixel(ByVal hDC As IntPtr, ByVal x As Integer, ByVal y As Integer) As Integer, but I can't figure out how to get the handle to the screen.
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Mar 6, 2011
I am trying to set a pixel a particular color. The code below does not work and don't know why.
Dim myimage As New Bitmap(PictureBox1.Image)
Dim i As Integer
For i = 0 To 59
[code]....
I also checked the Microsoft's sample code for setpixel which is below, does not work either. At least, I could not make it to work. I have used it within picturebox1_paint subroutine but got nothing.
Private Sub SetPixel_Example(ByVal e As PaintEventArgs)
' Create a Bitmap object from a file.
Dim myBitmap As New Bitmap("Grapes.jpg")
[code]....
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Nov 19, 2011
I am looking for some information on getting the colour of each pixel in a picture. The ide is to get the colour and then have my program draw a line along that colour itself. For example. If i have a black square on a white background, I want the software to be able the draw lines on the four edges of the black square, Is this possible?
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Apr 29, 2012
How would I change the colour of individual pixels in a VB.NET form?
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