I'm loading a picture into a picturebox. How can I set the pixel width to a fixed number, ex 300?
The whole picture must fit the picturebox, even if the original resolution is higher.
Dim bmp As New Bitmap("c:Test.bmp")
bmp.SetResolution(300, 50)
PictureBox2.Image = bmp
How 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]......
I'm working on a Remote Desktop Control in VB.NET. However, I have no clue how to get the location where the user clicked on the picturebox.
There's a picturebox with the captured screenshot and when he clicks on the picturebox, I have to grab the width and height where the user clicked. This is not the width,height from the whole screen but from the picturebox.
I am writing some text in a control using Graphics.DrawString I need to measure the width of the drawn text in pixel.
I tried to mesure it using:
Graphics.MesureString
TextRenderer.MesureText
GetTextExtentPoint32A (API)
All these method of mesuring the string returns different values for the width, and they are all the wrong value They all mesure the narrow caracteres as "i" as being narrower then they realy are and the wide caractere as "W" as wider than they realy are What would the proper way to draw and/or mesure a string to get the right position on the screen where the text ends
I drew an image in a picturebox with the image height as picturebox height and image width as picturebox width. The image is placed somewhere on the center of the picturebox. My intention is to scale the image to fit to the picturebox.
View 2 RepliesHow can i get a x,y location of colored pixel in my picturebox ? so say the pixel i wanted to get was the rgb 0,0,0 for black, How would i find the black pixel and return it's x,y ?
View 18 Repliesi 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 Repliesi've already got a coordinate (x,y) like this that picture at above was create with
datagridview.item(x,y).style.backcolor = color.black
how can i copying to my picture box? and of course become an image..
i 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 Replieshow to get color form a certain pixel from a bitmap image, but i cant find function getPixel in the picturebox object.
View 5 RepliesMy requirement is to display multipage tiff images using a PictureBox (in VB.Net (2.0)).For that i've created a panel (autoscroll ON)and top of that placed the picturebox and i am able to load the image in its actual size. Now i need to implement a)Fit to Width b) Size to Fit and Zoom(2.0/1.0/0.75/0.5) option.
View 4 RepliesI 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 RepliesIs there a simple way to get the width and height of a picturebox in pixels?
View 3 RepliesIve 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.
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?
View 13 RepliesIs there a quick way to check the color of a pixel on the screen?
View 2 RepliesIm trying to resize a picturebox dynamically using .size.height and .size.width Its not working. This is the error message: "Expression is a value and therefore cannot be the target of an assignment." Never used height and width before. Been trying to find the answer, but it seems beyond me. Im sure its easy. Anyone know whats wrong with this?
[Code]...
during 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 RepliesI 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]....
I am downloading a JPEG image from a site and then I need to find the darkest pixel of that image. It also needs to be very fast since speed DOES count here, majorly. (probably has to use an API)
View 4 RepliesI 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?
View 9 RepliesThis program using Visual Studio 2010, WIndows Form App I want to create a program which need RGB value from an picture in PictureBox But it has an error, NullReferenceException was not unhandled
The code Private Sub PictureBox1_MouseDown(ByVal sender As System.Object, ByVal e As
[Code]...
I'm using the next class to fill my listview
Imports System.Data.SqlClient
Public Class ListViewData
Public Sub FillListView(ByRef MyListView As ListView, _
[code]....
I want all the listview columns to be in auto width. I tried adding the next line of code but then only my first column fills my entering listview width. All other columns are not affected!
lvwColumn.Width = -2
What I am trying to do is fill the contents of the datagridview with the cell contents. There are two ways to do this.
1) Either set the DGV width to the cell contents width, or
2) Autoadjust the width of the cells to the width of the DGV.
how to implement either of these two approaches?
This Winforms app has a toolStripComboBox within a MenuStrip container that displays Culture Info languages.The toolStripComboBox's width is not expanding to accommodate the size of the string. The strings are dynamically added to the combobox from underlying code. How do I get the comboboxe's width to expand? Below is an image of the'too narrow' combobox and below that the Properties for the combobox.
View 1 RepliesI'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.
View 5 RepliesI am trying to make an application that can do effects to images but the problem is when I use large photos its takes a very very long time. I am reading it per pixel with bitmap's GetPixel and SetPixel methods. Is there anyway to make this process faster without using C# or C++?
View 1 RepliesHow 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 RepliesI 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 RepliesIn VB.NET for the combo box, I have set the autocomplete mode to "SuggestAppend" and autocomplete source to "ListItems". Its working as expected. But the width of the autosuggest dropdown box is not same as that of combo box and so it looks weird.I tried changing the value dropdown width property but it changes the value of normal dropdown box (seen after clicking down arrow on combobox), and not the autosuggest dropdown box.So what code or property needs to be set to make autosuggest dropdown box the same width as that of combobox width?
View 1 Replies