GetPixel Color From A Picturebox?
Apr 17, 2009i 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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GetPixel API On Picturebox?
Aug 6, 2009I'm having trouble getting the pixels of a Picturebox. My code is as follows:
Option Strict Off
Option Explicit On
Imports VB = Microsoft.VisualBasic
Imports System.Runtime.InteropServices
[Code]...
The program is supposed to load a picture, and then get each every pixel on the first line, adding the HEX color code and a "," to the richtextbox. At the last pixel of each line, it adds a ";" and skips to the next line, repeating the process until all processes are read. I've done this successfully by creating a new bitmap and using the .GetPixel from that, but that is terribly slow. Will this be faster? If not, is there any other API I could use that is faster?
VS 2008 - GetPixel Moves Mouse To Wrong Color
Dec 5, 2009I get no compile/debug errors. When I opened it, and tested it on this site, it doesnt move the mouse to 255, 0, 0 (red). it moves it to 128-128-0.
Try
Dim dc As IntPtr
Dim screencolor As Integer
If myHandle <> IntPtr.Zero Then
dc = GetDC(myHandle)
Dim XPos As Integer = Cursor.Position.X
Dim YPos As Integer = Cursor.Position.Y
[Code] .....
VS 2008 GetPixel Moves Mouse To Wrong Color?
Apr 23, 2010I get no compile/debug errors. When I opened it, and tested it on this site, it doesnt move the mouse to 255, 0, 0 (red). it moves it to 128-128-0.
Try
Dim dc As IntPtr
Dim screencolor As Integer
If myHandle <> IntPtr.Zero Then
[code]....
Interface And Graphics :: Get The General Color Based On What Is Returned From Bitmap.GetPixel()?
Aug 28, 2009how can i get the general color based on what is returned from Bitmap.GetPixel()? Like i want all shades of blue to just be blue, and so on
View 10 RepliesVS 2008 Changing Picturebox Back Color To System Color "Control"?
Feb 5, 2010Im havin a problem changing my picturebox back color to System color "Control".I can set it to color.red , color.blue etc , but not control .
View 6 RepliesGet Pixel Color From A Picturebox?
Apr 17, 2009i 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...
View 3 RepliesPictureBox Hover Over A Certain Color Of Image
Oct 17, 2011[code]This code finds a certain coloured pixel in an image but I also want to be able to know how to search for a smaller image within bmp.But it doesn't work and Im a newbish coder.
View 20 RepliesSetting PictureBox Border Color
Jul 12, 2009Is there a way to set the color of a PictureBox border? (Visual Baisc)
View 18 RepliesHow To Override Transparent Color Of Image In PictureBox
Feb 9, 2012I started off with a VERY simple form and added a picturebox item to it. The code I was following used a procedure in the Form1.vb to override the transparent color of the image:
bmp.MakeTransparent(Color.Fuchsia)
bmp was defined in the Form's "Load" section.
Now things are different. I have more than 20 picturebox items now, each created in the Form1.Designer.vb code as follows:
Me.Tile020.Image = CType(resources.GetObject("Tile020.Image"), System.Drawing.Image)
Me.Tile020.Location = New System.Drawing.Point(922, 297)
Me.Tile020.Name = "Tile020"
Me.Tile020.Size = New System.Drawing.Size(64, 64)
Me.Tile020.TabIndex = 3
Me.Tile020.TabStop = False
The image is referenced from the resources. When I run the program, I'd like all these images to have their backgrounds transparent. None of these controls is currently referenced anywhere in the code at present. What's the best way to get them to display transparently, other than recreating them as transparent .PNG's?
Reading Pixel Color From A Image In Picturebox?
Mar 9, 2003how to get color form a certain pixel from a bitmap image, but i cant find function getPixel in the picturebox object.
View 5 RepliesVS 2010 PictureBox - Color Under Mouse Cursor
Nov 18, 2011Basically I found a code that could find the color under the mouse cursor and put it in a picturebox's backcolor. So I wrote the code
Timer1.tick
If picturebox1.backcolor = color.dimgray then
call apimouseevent(1)
But all this would do is spam click over any color. Any code that gets the color under the cursor then performs a click when the color under the cursor is for example 'dimgray'.
Check PictureBox If Clicked Then Change Associated Textbox Color
Jun 5, 2009I am fairly new to vb.net and the form includes 3 picture boxes in red which you can click and change their color to green, also each picture box have three text box associated with it and they are by default color dark gray. I want the system to check whether the picture boxes are clicked and if yes set the associated text box colours to white.
Here is the code I wrote:
Public Class Screen
Inherits Windows.Forms.Form
Dim T(1, 2) As TextBox
Dim S(2) As PictureBox
Dim x, i, j As Integer
[Code] .....
Interface And Graphics :: Get A Picturebox's Clicked Pixel Color?
Jul 31, 2010I 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.
View 3 RepliesForms :: Transparent Picturebox - First Picture Cover The Second One With The Background Color?
Dec 30, 2010i'm using VB 2010 and i'm trying to make a transparent images but without success .i draw 2 GIF pictures in Photoshop and save it as transparent.i put that GIF's in 2 pictureboxes on the form and the background of the pictures is really transparent, but when i try to put one picture in the top of the other one, the first picture cover the second one with the background color (and becuase it's transparent it's like the form color)
View 2 RepliesConvert Textbox's Text (containing Different Characters Of Different Font & Color ) Into Image Or Picturebox?
Dec 13, 2011I am doing project in vb.netI am using a Rich text box on which i can set different ont(name,size,bold,italic,underline),color to different selected text.I am able to do this in Rich textbox but i want to create bitmap (or assign to picturebox) of this of different text with different font style & color but i am getting not much font as like textbox in image..
View 1 RepliesInterface And Graphics :: Rip Pixel Color Off Of The Background Image Picturebox ( The Level)?
Feb 27, 2009Ive 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.
Getpixel Is Not Working?
Nov 28, 2010Look at this code, it's so simple, yet I can't manage to get it to workon the top of form1 is
Option Strict On
Imports System.Drawing
Imports System.Drawing.Drawing2D
[code].....
How To 'getpixel' For 32 Bit Float
May 18, 2010My program works through each cell in a raster bitmap loooking at the r g b values. Actually I'm just working with greyscale so r = g = b. I use the get pixel method to return the 8 bit value of each pixel (0 - 255). However I'm now working with a single channel 32 bit float bitmap. I can't load it into VB. I tried Dim myBitmap As New Bitmap(OpenFileDialog1.FileName) but this fails with an unspecified error when trying to open a 32 bit tiff.
The question is: which graphics format will allow me to load a 32bit bitmap into VB, and if I succeed will the getpixel method return 32bit float results for the greyscale level for each pixel?
How To Use Getpixel And Setpixel
May 18, 2010I have a icon maker program. I have two pictureboxes pic1 and pic2 and a open image button. I need a code that will if the pic1.image color has any red in it, it will take that red and turn it into the desired color. I know you can use getpixel and setpixel but I don't know how to use these.
View 13 RepliesVS 2010 Use GetPixel In A Different Way?
Feb 28, 2012Is it possible to use GetPixel in a different way? I want to use it like:
'If GetPixel(x,y) = COLOR Then
Loop Until GetPixel(x,y) = DIFFERENT COLOR
Something like that...
Why Is It That The Cint() Is Only Used For Pic.GetPixel(X,Y).R) And Not For The Others
Jul 22, 2011i need some help on explaining to me whats going on in the code below. Basically, the code below is used to convert a bitmap image to grayscale level (black and white).
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim pic As Bitmap
pic = picVisible.Image
Dim X As Integer
[code].....
what i dont understand is the part;
color = (CInt(pic.GetPixel(X, Y).R) + pic.GetPixel(X, Y).G + pic.GetPixel(X, Y).B) / 3
why is it that the Cint() is only used for pic.GetPixel(X,Y).R) and not for the others ? Any Image processing expert that can help explain this ?
Note: The code works well and manages to convert an image into its grayscale.
Faster Than Getpixel Setpixel VB?
May 23, 2012I worked in a role and functioning properly. The problem is that it is a bit slow for use in many images would be very slow. I read online that with stride and scan0 and working in memory with buffer can be made faster, but i donīt understand anything . Does anyone know how it works or how to make my code run faster?
[Code]...
Something Faster Than Bitmap.getpixel?
Apr 24, 2010What I'm trying to do is iterate through each pixel in a bitmap, and get the color value of each pixel.I've tried using .getpixel, but it's fairly slow. On a 640x480 image, it takes roughly .35 seconds to go through it. Which can add up if doing many pictures.
[Code]...
VS 2010 GetPixel Not Working
Mar 3, 2012[code]Well, the first GetPixel works fine, it sets textbox2 to yellow if the pixel is ofund and textbox1 says green. But, the second GetPixel doesn't work. The coordinate are correct and the color is also, but I never receive the msgbox.
View 28 RepliesVS 2010 LockBits Or GetPixel?
May 30, 2012Which would be better to use if I want to find one pixel?
View 2 RepliesGetpixel And Mouse Click Program?
Mar 13, 2009Im trying to make a program that will automatically send a left mouse click on the current mouse position using a getpixel trigger. The one i made will wait for the pixel color to change and it will trigger the next timer to monitor if an indicator hits the middle of the bar.
This is the example of the bar waiting for a color change:
This is the example of the bar when the indicator comes out
[Code]...
Memory Leak Using GetPixel/GetDC In VB?
Apr 6, 2012I have a timer that among other things, checks 5 spots on the screen for a color change. My program monitors a phone system app and checks to see if there is a new incoming phone call from any of 5 buttons. I'm using the following code based on another question I had posted. Monitor an area of the screen for a certain color in Visual Basic
Private Function CheckforCall()
Try
Dim queue1 As Integer = GetPixel(GetDC(0), 40, 573)
Dim queue2 As Integer = GetPixel(GetDC(0), 140, 573)
[code]....
Using this code, GDI Objects skyrockets very quickly and within short order, throws an OutOfMemory exception. I'm assuming I'm not releasing the DC properly, but I can't seem to find any other way to do it.
Find The Colors Of Pixels Using GetPixel(x,y) With Bitmaps?
Oct 12, 2010I'm trying to find the colors of pixels using GetPixel(x,y) with bitmaps.
I understand how to use it and it works.
When I use .ToString I get the string version of the color.
Now when I use .ToArgb I get a negative number and the colors are backwards?
16777215 should be white and 0 should be black.
This is an example of some results:
-16273900 is showing close to black and -32567 is showing close to white.
Getpixel + Printwindow : Getting A Pixel From A Program That Is Not Focused?
Jul 21, 2009what i have been trying to get to work is getting a pixel from a program that is not focused (so minimized). I tried Getpixel but only got it to work when the window is active(focus). It seems it only works for active window.Then i thought making a temperately screenshot of the program and get the pixel. I came across PrintWindow. Right now im searching to make a temperately screenshot of a minimized program and read the pixels of it. So far i had no success.
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