how can i crop an image based on the size of my picturebox?
my picturebox's size mode is normal, i want to have for example, a 100 x 100 image using a 100 x 100 picture box, also i can drag the the image inside the picturebox so that i can have a focal point, a center of the image that i want to crop on.
I'm playing with creating thumbnail images for my photo website using VB rather than Photoshop.[code]However, I'd really like to be able to crop images to a square shape - same width and height - from a starting image that might be 1000 pixels wide x 667 high, 500 wide x 750 high or already square and around 750 x 750. In other words, crop a square from the central area of a jpeg image, irrespective of it's exact size.
View 3 RepliesI'm playing with creating thumbnail images for my photo website using VB rather than Photoshop. I've found some great code for resizng jpegs whor this one:
Imports System.Drawing.Drawing2D
Public Class ImageResizer
Public Shared Sub ResizeImage(ByV
[code].....
In my code I am taking a screenshot of a CAD screen. The image consists of various colored entities on an all-black background. I would like to find the extents of the non-black pixels in all four directions & crop the image to those extents or maybe a few pixels beyond.
View 9 RepliesIf i wanted to crop an image in VB.net, how would I go about doing it? I am trying to let the user drag out the box they want (system.drawing.rectangle), and it will automatically remove the edges surrounding the box.
My first problem is primarily the fact that I cannot make the system.drawing.rectangle visible. It is not displaying at all, I am setting its location and height programmatically, but nothing is showing up. I know there is probably something fairly obvious I am missing...but I cannot seem to find it.
My larger issue, however, lies with the cropping itself. I cannot find any crop methods, at all. Is there a hidden one I am missing? Or must I code it myself? How would I go about doing this? It ought to be able to output to a bitmap image object.
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 RepliesI have a program I'm working on that, for one of the features, allows the user to drag an image from a picturebox, into the main form space, anywhere they want. [code]...
When trying to drag the image from the CurrentTilePicBox, the very moment I move the mouse while dragging the cursor becomes a circle with a cross and won't drag and drop into the new picturebox.
i'm doing a simple form tat could add picturebox during runtime and i could add several picture into it.
View 5 RepliesI have a Picturebox and a two Buttons on my Form. On click of one of the buttons I want to change the image in the picture box at runtime.
This works fine when I give the location of the image (the full path ) on my computer - but then of course it will not work if I use the solution on a different computer .
So I have made a folder named "Pics" inside my application and added two images into it.
How do I get to this local folder in the following code?
Picturebox1.image = system.drawing.image.fromfile (??? )
instead of the usual,
Picturebox1.image = system.drawing.image.fromfile ("C:UsersMyName My PicturesMyPicture.jpg" )
I'm trying to update pictures boxes with images of controls stored in an imagelist owned by a control. The images stored in the control.imagelist do not showup in the picturebox. I'm working on simplifying the code to post, but for now could use help.If I store the image in a member variable owned bythe control it woks fine.Something to do with persistance of images in control owned imagelist? [code]
View 2 Repliesi'm lost on this code.. i have a picturebox that swaps 2 images, depending on the action, file_red and file_green.. what i'm trying to to is, if a picturebox switches a image or not, to be able to detect that and have textbox8 add a line with the detection.
[Code]...
How do I draw an image respectively on the PictureBox control and Image object? Welcome to the All-In-One Code Framework! If you have any feedback,
View 1 Repliesi have a image with four squares evenly spaced out. I want a picturebox's image to be one of the squares at a time so it's like a animation except it's only one image.
View 7 RepliesI have a PictureBox which I would like to check if it's the same as one already imported to resources . If it's the same it'd do a condition otherwise it's do something else .
If I try
If PictureBox1.Image = Jogos_Matem�ticos.My.Resources.Resources.Cross Then
'code here
Else
[Code]....
I have an application which first load an 1200*800 image into an 600*400 picturebox. When i crop the whole image in picturebox and save it, the size will be 600*400. How can i make it save in 1200*800?
View 6 Replieshow would I allow my screen capture to crop and capture only a particular area of a screen?The user should be able to select the area they want to crop. It would be good if the cursor changers to a plus like other screen captures and also the screen is all paused so the user can select the area they want.v
View 4 RepliesI'm in essense trying to make my own interpretation of the NES hardware, so I can make a game that ideally would resemble what a NES game would look like. I'm currently stuck with how to adjust how to draw the playfield to the video memory (back buffer).
Backbuffer: The NES had restrictions on the nametable, or backbuffer. For my example, the backbuffer is 256x240pixels big, or the size of one screen. If I drew this to the TV, it would fill up the screen perfectly. Now, if I drew this to the screen with an offset of X=5, the entire image would be shifted and would wrap around the screen.
For example.....
ORIGINAL, NO OFFSET: DRAWN WITH OFFSET OF X=5:
ABCDEFGHIJK GHIJKABCDEF
DRAWN WITH OFFSET OF X=-5:
FGHIJKABCDE
The screen is split up into squares 8x8 pixels each, totalling 32x30 rows and columns. (256x240 pixels). The offset is represented in pixels - not columns; so in theory, I could offset the screen by 5 pixels and every column would be shifted to the right by five pixels.
Level Design: My stages are made up of screens, containing data that is represented in 16x15 rows and columns, each by 16x16 pixels. This is to emulate how many NES games stored level data - each tile holds info about what should be in each 8x8 block.
E.g.:
AA
BC with A,B,C,D representing what 8x8 graphic should go where
Level design is represented by this as well, with each number being a different screen and - meaning nothing, null.
-----
-123-
---4-
--54-
-----
Character Replacement: This is easy. I already know how I can determine which table, row, and column my characters are on based on their absolute positioning. I can also determine the relative positioning within the screen.
With this info, I can easily figure out which columns are to the left and right of the character, if any (if the character is at the left side of screen 1, thered be no more level left). How do I draw my levels to the screen, so that they scroll from one to the next. It would be relatively easy to draw one full screen at a time, and when the character gets to the edge just flip to another screen. However, the problem I'm conceptually having is that I need to 'stream' the level data onto the screen. That, lets say the character moves 24 pixels to the right. The BG needs to move as well. So, I need to adjust the scrolling of the backbuffer by 24 pixels.
However, just scrolling alone will cause the screen to wrap over, diplsaying old portion of the level. So, while scrolling I need to make sure to draw new pieces of the level to the back buffer. But before I can do that, which tiles need to get drawn first. And if the person goes 24 pixels to the left, I need to redraw tiles onto the backbuffer and change the offset accordingly as well. And let's not forget that if the character moves right and there's no more level data to be drawn, there should be no offset but instead the character gets closer to the side of the screen (instead of being centered in the middle of the screen via the X axis).
How can I build a cropping tool such as the one in Office Picture Manager as seen below? Notice that as soon as the Aspect ratio is selected a cropped area shows on the picture that can be dragged to the perfect position creeping the aspect ratio in tact. This is why I wanted somehow to link my app. to Picture Manager. I want the picture to open in Picture Manager, cropping tool already selected, ready to be dragged to the perfect position. Unless you have some code that can do jut this.
View 12 RepliesI'm wanting to add a image to the picturebox. The image would be a variable. I'm trying with the following code with no success.[code]...
View 1 Replieshow can i get an image that i drawn on a picturebox? in my application i created a form with the freehand drawing.but i can't save the image that i drawn as a file,there have a error message that "object reference not set to an instance of an object".I am using the code me.picturebox1.image.save(filename,sysytem.....jpeg)
View 4 RepliesThis only works in visualbasic 2008 PictureBox1.Image = Image.FromFile("C: est.jpg")
How to use in Visualbasic 6.0?
in vb.net can i pan an image within a picturebox without having scroll bars at the side or a seperate form that comes up with the the image to navigate round, i just want to click on the image and drag around it to navigate it without a scroll bar or a seperate pan window.
View 5 RepliesIs there any way to set a picturebox's image from a url? My idea is something like "Picturebox1.image = Webbrowser1.(I dont know how to finish the code from here)".
View 1 RepliesI am trying to create an If Then statement to test against the PictureBox.Image property. I want it to test if one image is selected and if so then to switch the image. This is what I have:
If PictureBox.Image Is My.Resources.Image1 Then
PictureBox.Image = My.Resources.Image2
Else[code]....
I am trying to figure out how to make Alt + Clicking on the picture generates this response.
I am using this to get image bytes from the database[code]...
Now how can I add this to PictureBox.image. I am having a lot of trouble retrieving the image and displaying it in the PictureBox.
The datatype is Image in sql database and i use this code to save image to db[code]...
I have a PictureBox on a VB form which I need to check in code to see if it does not contain an image.
View 7 RepliesI'm using VB.NET forms app and I need to check if a PictureBox currently has an image in it. How would I do this?
View 1 RepliesI need to check if a picturebox has an image in particular, to check an if condition. I allready try:
if picturebox1.image.equals(path) then
Do Something
else
[Code]....
I have a form with a picturebox that will allow to draw a free hand picture.
I added the initialization of the image in the form_load and the click event of the clear button. When I click the clear button the image is cleared and at the mouse move on the picturebox the last drawned image will shown.
My question is, how can I validate the picturebox whether it is empty or not?
'i using this code in the piicturebox1_paint
myusercolor=(sysytem.drawing.color.black)
myalpha=100
using g as graphics=graphics.fromimage(picturebox1.image)
[Code]....
by this code i have a problem that when i click the clear button the picturebox is cleared.but in the picturebox's mouseover the last drawn picture will appear.so i cant draw a new image ..