Video Pixel Colour - Check Whether The Colour Chas Changed Significantly?
Apr 8, 2009
So I have got a program with a timer on, a few labels displaying coordinates, and two buttons. Here is my
[code]...
It displays the color of the pixel at the coordinate typed into the text boxes.I have a video of a tennis ball which is bouncing on the spot, and the background in brown, so when the tennis ball comes into view there is a significant color change and i want it to start and stop a timer each time the colour changes significantly.So my question is, how do i get it to check whether the colour chas changed significantly?
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May 7, 2010
Is there any way to change the colour (background colour or text colour) of just a certain item or item(s)?
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Apr 16, 2011
I 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?
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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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Mar 15, 2012
To .NET after getting tired of using VB6 due to the lack of functionality. I'm trying to create a log on method for a system which will involve users selecting a colour from a paint panel and then placing/drawing the colour in 1 or more tiles of a grid, basically a 3x3 grid in which for example they selected the blue colour and drew in the top left tile and the bottom left tile. The logon is selecting the correct colour and placing the colour in the appropriate tile. What i want them to be able to do is place even a single pixel of colour so it has a high accuracy. So far i have a timer which loops from the width of the grid to the height of the grid.
Private Sub Timer1_Tick(sender As System.Object, e As System.EventArgs) Handles Timer1.Tick
Dim BMP As New Drawing.Bitmap(1, 1)
Dim GFX As System.Drawing.Graphics = System.Drawing.Graphics.FromImage(BMP)
GFX.CopyFromScreen(New Drawing.Point(MousePosition.X, MousePosition.Y), _
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To start with i have just hard coded the colour i want it to detect. At present it produces an error. Parameter must be positive and < Width the error is on System.Drawing.Point(i,j). If i place the mouse over the colour then run the program it will say it has been found, but otherwise it wont find the colour. I believe i am not updating the location of the pixel or something to that effect.
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Nov 30, 2011
I've got a combobox which loads the system colour list, the selected colour is stored in the registry (i've tried storing the index number value aswell as the colour name - how can i get the combobox to display the stored colour as the default colour when the form loads? It always defaults to the first item in the colour list I've tried
[Code]....
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Jul 5, 2010
I am running a program that is connected through the internet and i gets disconnected at times.I 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 it.
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Apr 8, 2010
My VB2010 programme changes the background colour of a button (butExtra.BackColor = Color.Red). But how do I restore the colour to the default "Control" colour?
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May 30, 2011
i am looking to change the windows colour and colour intensity. These settings are accessable through Control PanelAppearance and PersonalizationPersonalizationWindow Color and Appearance But is there a way that i can remotely change these two settings through functions in my windows form application? Also is there any way of removing the slight blur on the window bars/taskbar when using an aero theme?
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Dec 7, 2010
I am making an application which is capable of displaying a picture, and making adjustments to it. Unfortunately i'm stuck at this phase:The colour of each pixel in the image should be inspected and stored in one or more arrays.
My code so far
Public Class Form1
Dim OpenFileDalog1 As New OpenFileDialog
[code]....
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Sep 16, 2009
I'd like to replace all the white pixels in a bitmap image with pixels of the colour "Color.FromKnownColor(KnownColor.MenuHighlight)". Is there some method in the Image, Bitmap or Graphics classes I can use, or will I simply have to inspect each pixel in the image with GetPixel, check whether it is a white pixel, and then set it with SetPixel?Here is the code I am using now:
Private Shared Sub highlight(ByVal b As Bitmap)
Dim highlightColour As Color = Color.FromKnownColor(KnownColor.MenuHighlight)
Dim whiteARGB As Long = Color.White.ToArgb
[code]......
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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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Aug 15, 2011
i tick a check box in my datagridview, the cell in column 3 of the same row will change colour? this needs to apply to all check boxes and corresponding cells.
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Jul 22, 2010
The following code records the row and column of a selected cell.
[code]...
.
If MonthDGV.Rows(selectedRowIndices(0)).Cells(selectedColumnIndices(2)).Style.BackColor = Color.White Then but that is no use. As there could numerous selected cells all over the place, how would I check the BackColor of all the selected cells.
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Mar 26, 2012
this is my very first posting and I must say I am desperate. I have a VB assignment due in 2 days and I am so lost. I have written a code to draw some graphic, just a basic house, tree, sun etc. I have also written a code to magnify said graphics which were all the specifications of my Assignment 1 part A. Now for Part B I am being asked to extend my program so that: A - My graphic can be drawn using different colour schemes designed by me but chosen by the user B - My graphic or an appropriate part of it can be animated around the picture box if the user chooses to do so. C - Error checking is included.
[Code]....
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Jun 21, 2010
i want to know the code to produce colour in a box of my DB
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Apr 3, 2009
how to get the Red, Green and Blue values from a specific colour. I have a Label, and the user can set the backcolor property. I would like to extract the Red, Green and Blue values from the users chosen colour.
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May 20, 2012
im trying to change the colour of the progress bar for a custom control. ive tryed quite a few methords like using the sendingmessage function below:
<DllImport("User32.Dll")> _
Public Shared Function SendMessage(hwnd As Integer, wMsg As Integer, wParam As Integer, lParam As Integer) As Integer
End Function
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but this didnt work for me i couldent see any change.
what would be the best way for me to change the forecolor for this control? i cannot use PercentFull.ForeColor as i will have xp styles enabled.
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Nov 5, 2011
I have created a program that Draw a circle and then you can move it around a picturebox. I have made code so that it changes colour but instead of changing the colour of the circle already been drawn it creates a new circle which when you overlap the original circle with the new circle it cuts part of it.So what I wanted it to do when I change the colour of the circle it changes the colour of the circle already been drawn instead of creating a new circle.
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Also I can't use the X and Y coordinate input to move the circle to the entered coordinates.
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Apr 7, 2011
I want that when a form appears, your screen colour changes to red, blue and black, how to do that in VB.net? I'm using Visual Studio 2005. Explain me as I dont; know.
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May 7, 2010
if i have ten textbox. in each with different a b c d e f g h i.. i want to retype it and the colour wil change. lets say i backspace a and when i retype it will change to green.
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May 7, 2010
my puzzle have random characters. and i want the colour of the character to change when i retype it. Lets say R... i backspace and retype r but there's coulour. can i know how?
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Mar 12, 2010
I am trying to make syntax highlighting text-box. I have got it done pretty much, but I am having a problem. Whenever I type a word like below:
<html>
It appears fine,But if I type it in like below:
<img src="
Because there is no space inbetween the = and the " it doesn't show up coloured.Here is the code I use:
Public Class SyntaxRTB
Inherits System.Windows.Forms.RichTextBox
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" [code].......
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Nov 17, 2011
I am making a html editor in visual basic 2010 for Uni and i am coming across some problems.
I'm using the richTextBox because it is more editable for what i am doing. The first of my questions is: How can I change the colour of text.
What I have done so far is add a timer that will constantly check to see if the user has entered... lets say "<div>" then i want that text to change to a different colour... say red.
My second question is: Obviously in web dev when you write the <div> tag you have other content inside it like: <div id=""/> so how can i make the entire string between the < and the > or the <div> </div> become the same colour.
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Oct 19, 2010
I need to convert a VB.NET colour to a hex code.Here is my code thus far:
TextBox1.Text = ColorTranslator.ToHtml(Button1.BackColor)
The back color of button 1 is red. However when I use this code the textbox types "red" instead of "#ff0000". Is this because when typing HTML, most normal people would type:
<font color="red">
<!--- Instead of typing --->
<font color="#ff0000">
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Jan 9, 2008
I have written a program to return the colour of a pixel from an image. The problem I have is I need to return the colour name. Of course not all colours returned will be one of the pre-defined colours (knowncolours), so my question is, is there a way to find the nearest knowncolour which matches the colour of the pixel?
I have looked at GetNearestColour but am confused by its function. It just seems to return the same colour as the parameter passed into it.
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Oct 9, 2010
I currently have a listview on a forum. The user will select an item and press a button, presenting a second form with data based on their selection. In the event that the user wishes to return from the second form back to the first, the selected item in the list view should still be selected.
I have set the hideselection property to false, but have found that the selected item will be a light gray as opposed to the normal blue. Can anyone please tell me how to change the colour so it will always be blue?
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Mar 21, 2009
In My Form When I Change The Colour Of A Button It Still Has A Ring Around It, Can I Change It So It Is All One Colour.
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Dec 5, 2011
I have 10 labels lined up. i went to write a code that will change each of the label back and for colour one after the other. in such a way that its look like a scrolling colour from the bottom label to the topmost label and then comes down.i want this to be done when the form loads.
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Apr 26, 2011
Well, i created a form and added a textbox and a button to it, when i press that button this text "VB Forums" appears in the textbox. The question is, how can i make that those initial letters (VB) appear in another colour e.g Red but the remained Text (Forums) stay as it is.
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