[VS 2008] Get The Pixel Color Of An Hwnd Using GetDIBits And Print The Result As A RGB Value?

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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Interface And Graphics :: GetDIBits : Return The Pixel Positions In The Image At Which They Are First Located Adjacent To One Another?

Sep 24, 2008

how I could search a given bitmap, say "test.bmp" or a printscreen, for two pixels that are next to each other and that have specified color values? The colors are: &H486596 and &H213D66. I then want to return the pixel positions in the image at which they are first located adjacent to one another. I'm only after the first instance of the occurrence. I wish to use GetDIBits as I hear that it's quicker. So I want to find the first instance where the color value for pixel (x,y) = &H486596 and (x+1, y) = &H213D66.

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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, 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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Interface And Graphics :: Get Pixel Color Of A Pixel On Screen

Sep 13, 2007

Is there a quick way to check the color of a pixel on the screen?

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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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VS 2008 : Get The Color Of A Pixel At Current Mouse Location?

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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Get RGB Pixel Color Of A Pixel On The Screen?

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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VS 2008 - Display The Color Of The Current Pixel Under The Mouse Pointer

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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Possible To Replace A Specific Pixel Color With A Defined Color?

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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Get To Color Of A Pixel?

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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Detect The Color Of A Pixel?

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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Find A Pixel Color?

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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Find The Color Of A Specified Pixel?

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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Get Pixel Color From A Picturebox?

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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Get Pixel Color Of Label?

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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Get The HEX Color Of The Pixel The Mouse Is On?

Feb 9, 2011

The title basically states it. Is there a possible way to do this?

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Get The RGB Color Of The Pixel The Curser Is On?

Apr 5, 2010

How would i get the RGB color of the pixel the curser is on?Attributor 2.0

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Grabbing Pixel Color Value?

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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Re Getting Pixel Color At X - Y On Screen

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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VS 2010 Set A Pixel A Particular Color?

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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Way To Find Pixel Color

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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Changing The Pixel Color In A Form?

Apr 29, 2012

How would I change the colour of individual pixels in a VB.NET form?

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Aug 21, 2010

I'm trying to figure out some simple code to detect when a single pixel changes color at a location I choose -anywhere- on the screen (ex. 100,100). Maybe with just a msgbox popup when it changes.

The visual basic program will just be hidden and running in the background.

I should be able program the rest of the program around it, I just need the detection part. That is where I am stumped.

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Find A Pixel Color On Screen?

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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Find Pixel With Matching Color?

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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Get Pixel Color At Screen Position?

Feb 11, 2010

Is there a way to get the color at a certain mouse position in the active window? I remember doing it with AutoIt Script, but I can't find any references for it in vb?

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Get Pixel Color Of Hidden Window?

Mar 28, 2011

Is there way to get the pixel color of the specific point of an hidden window WITHOUT to use the PrintWindow Api?[code]....

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Get The RGB Color Of The Pixel At The Cursor Location ?

Nov 1, 2009

How 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.

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Pixel Color Not At Mouse Position?

Nov 8, 2009

i know there are 1000000 posts about getpixel but i cant find what i need. i am able to get the color of a pixel at the cursors position without a problem. I need to be able to compare that color to the color of a pixel on screen at x,y without moving the cursor. how can i go about this?

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Read/Write Color Of A Pixel?

May 6, 2010

This is my first Visual Basic application. I mainly do console applications in C++ and since working with pixels seems to be difficult in C++ I preferred to use VB 2005 for that. What I need to do is to read and save the colors of the pixels of a picturebox located on a form into an array. I then will manipulate the color values and create a new picture. I wonder if somebody could show me how to do that without asking me what my code is. I've struggled the whole day and so far I've realized that to draw a pixel you should draw an ellipsoid like:e.Graphics.DrawEllipse(Pens.Red, 70, 70, 1, 1)in the picturebox_paint procedure.What I need to learn is how to read the color values, and how to initiate creating the new picture by pressing a button (because I don't want the part for drawing a pixel be in the picture_box procedure.)

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Search For The Color Of A Pixel Anywhere On The Screen?

Nov 14, 2008

I searched all over the internet and i haven't found anything about getting the color of a specified pixel like 150;200

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Fetch Pixel Color At Cursor Position?

Dec 15, 2011

In Visual Basic 2010, how do I fetch the color of the pixel on the cursor's position (whether it be outside the program or inside)?

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Find Pixel Color And Move Mouse?

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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Find Pixel Color Anywhere On The Screen By Coordinates?

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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Find Screen Pixel Of Chosen Color?

Nov 8, 2010

How To Find Screen Pixel Of Choosen Color?

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Get The Color Of The Top-left Pixel Of The Desktop Window?

Mar 29, 2010

I need to get the color of the top-left pixel of the desktop window, here's my

vb.net
<DllImport("user32.dll", SetLastError:=True, CharSet:=CharSet.Auto)> _Private Shared Function GetDC(ByVal hwnd As IntPtr) As IntPtrEnd

[Code].....

But GetPixel always returns -1. I tried to get it to work using different coordinates (1,1 for example) but no luck. Does anybody know what might be the case?

P.S. Is there any alternatives for obtaining the desktop pixel colors?

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Reading Pixel Color From A Image In Picturebox?

Mar 9, 2003

how to get color form a certain pixel from a bitmap image, but i cant find function getPixel in the picturebox object.

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VS 2010 Checking Pixel Color Under Pointer

Dec 3, 2010

I've set up a transparent user control (used for drawing tools) over a page, and I'm trying to set up some code that will allow you to click through the control if the pixel underneath the pointer is transparent, but will NOT let you click through if the pixel is colored. Basically, if they've drawn a line there, I don't want them clicking through it.

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Draw Rectangle On Image Where Color Pixel Is Black?

Mar 17, 2011

I want to draw a rectangle on image where color pixel of image is black

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Interface And Graphics :: Get A Picturebox's Clicked Pixel Color?

Jul 31, 2010

I am currently creating an app and i want to be able to get the colour of a pixel, but in a picturebox.Example: I click anywhere in the picturebox and it will give me the color of the pixel I clicked.

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Scan Program To Detect Pixel Color Change?

Sep 14, 2011

The purpose of the code below is to scan a program of mine to detect a pixel color change. It loops through until a change is detected. It works fine for about 10-15 seconds and then I get an ArgumentException was unhandled error. So far this has happened on two different lines at separate times...
Image = New Bitmap(Rec.Right - Rec.Left, Rec.Bottom - Rec.Top)

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Interface And Graphics :: Rip Pixel Color Off Of The Background Image Picturebox ( The Level)?

Feb 27, 2009

Ive been working on creating a side scroller game, and the back color of my pictureboxes needs to go. when transparent, it shows through the program and onto whatever is active in your Windows os(usually Visual studios).

I am trying to rip pixel color off of the background image picturebox( the level), and replace parts of the character picture box that show transparency with the level art. there may be poor logic in my code?

Heres my code:

Dim newImage As Bitmap = New Bitmap(PictureBox1.Image)
Dim backImage As Bitmap = New Bitmap(PictureBox2.Image)
Dim ximg As Bitmap = New Bitmap(PictureBox3.Image)

[code]....

not the best idea, but all i get is one color for all the level pixels placed in the new image, which is odd. any poor logic you see in this code that could allow the newImage.setPixel not to be 1 color? when i breakpoint, it is recieving different colors from the backimage.getpixel, but only putting one shade on for setpixel somehow. im not going for an accurate color read from the background yet, just wondering why im getting 1 pixel color for the whole picturebox background when being changed.

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Interface And Graphics :: Simple Code To Detect When A Pixel Changes Color Anywhere On Screen

Aug 19, 2010

I'm trying to figure out some simple code to detect when a pixel changes color anywhere on the screen. Maybe with just a msgbox popup when it changes.

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VB 2008 - Main Window From Child Hwnd

Jan 6, 2011

Hwnd = WindowFromPoint(Cursor.Position) I can get the Hwnd of every control of an external window is under the cursor. Question: I need only and always the MAIN WINDOW hwnd, everywhere should be the cursor. what API I need?

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VS 2008 Setting Sizable Style To HWnd

Jun 6, 2010

im getting errors and ****.. can someone give me a working code to actually call it

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