The title asks it all, if i have a form with a picturebox (dock = fill), and it loads a bigger picture than the screen bounds, and i want that form to resize so it fits the screen but having the same ratio as the picture size. How shall i do this?
View 4 RepliesI have a folder of images that I would like to loop through them all and resize each one to have a max of 100 in width or height, I have looked at the samples out there but none indicated where I can set the width and/or height and it will do it automatically, I would like to save the file in a new directory once I resize it.
View 4 Repliesi ve one picturebox and one OpenFileDialog when i browse the image and load it into a picturebox it didnt fit to a picturebox, then tell me how to load the full image in a picturebox and maintain ratio
View 3 RepliesI'm just doing a quick little application and was wondering how I can keep the user from moving the window outside of the working area I tried this
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I got this code from this forum, it works perfectly but I have a problem where when you resize the images, the quality of the image becomes not as good, is there a way to keep it in the same quality as it is when resizing?[code]....
View 13 RepliesI propose to start a project which will take image files from a folder selected by the user, and display them as large as the screen will allow. I shall start with images that will be in the form 'filename.jgp'.I reckon I'll be able to do most of the coding without too much trouble but before I begin I'd like to know that there is a way of discovering the x and y pixel sizes of a .jpg file so that I when expand, or reduce it I will be able to keep the image in the correct aspect ratio.I'd also like to know if there is a way to rotate an image through 90 either clockwise or anticlockwise, (counterclockwise) for those cases where an image is stored sideways due to the difference between taking photographs either in landscape or portrait mode, or even through 180 I guess for if the camera was totally inverted.
View 4 RepliesI play a game and in the game you acquire skills which you can display on the screen in a box very similar to a data grid. The grid has 3 columns and X number of rows.Column 1 is the name of the skill, column 2 has a descriptive term like "Beginner" and column has the number of points you have acquired in that skill. So it would look something like this:[code]Remember that it is in a data grid so it has cells like an Excel spreed sheet.The program that I use is able to parse the skill name and the points and save that information outside the game to a n area in the program.My question is, is this possible to do something similar in VB? That is something like, Press a hot key, with will get a screen shot, parse the data and save to a data grid in my VB program.
View 2 RepliesHow can i print a large image using vb.net? A A4 paper seems not be enough!
View 18 RepliesI need to send and receive a large image between programs running on different machines within the same network.
I've looked at using upd however ran into problems with the size of the packets and
(after breaking the image into smaller pieces to get past this problem) the number of packets needing to be processed all at once - and ultimately packet loss.
I've also thought of sending the image by storing it in a common file folder and receiving it by using file watcher as a trigger. However, this just adds further complexities in setup where common folders don't already exist.
Assuming I'm barking up the right tree looking at tcp, can someone point me to/provide an example of how to send an image file using it (vb.net would be ideal). Also, are there practical limits to tcp package sizes?
Just a doubt: if I have large amount of image files for my app, is it ok to store them in the resource file ?
Will those files be saved in a single resource file ? Will that cause any problem to the performance of my app ? When I try to access a image file from the resource using code, will it load that file only into the memory or the entire image contents from the resource file ?
Ok so i have an jpg image of around 8.10mbs at around 13424 x 11344 pixels, i need to load the whole image in to a scrolling picturebox, is they anyway to do this without using so much memory for example like what google maps does n cuts the image down and some how stitches it all back to gether?
View 1 Repliesok so i currently have a large image loading in to a picture box the image is 13424 x 11344 and 8.10mbs and it up around 460,000k of memory i was just wondering if they was a more efficient way of loading this image?
View 4 RepliesI have a map image and i want to open it look like ACDSEE (very fast)my image is 12756 x 8504 pixel and i try backbuffer but not work for me.
View 3 RepliesI am an experienced programmer but mainly in 4GLs and assembly. Relatively new to VB programming, especially GUI applications. On a form I need to create an area that will be used to display *extremely* large TIFF images. typical image size would be 2000 pixels by 100,000 pixels. Typically I will NOT want to display the entire image at once, so the area will need to have scroll bars and/or other methods to scroll/pan around the image.
I have read about and tinkered with the bitmap and picturebox objects, including some threads about several different ways to implement scrollbars. However, I see that the picturebox size is limited to 32K pixels in both dimensions. I suppose that I might be able to copy various portions of the bitmap to the picturebox depending on scroll position, but that seems potentially quite slow and cumbersome. Can an expert developer who is experienced with these types of issues regarding the following:
1. Can bitmap objects be used effectively with TIFF images of the size I am working with?
2. an approach that should produce reasonable scrolling performance for these extremely large images without excessive coding effort?
3. For an image that exceeds the picturebox size when displayed at 1:1 scale, is the picturebox capable of displaying a reduced size version of such an image without lots of code, and if so, how?
4. Many (most?) graphics display objects count on all of their display data being stored in memory rather than on disk. Would that be true of a TIFF image loaded into a bitmap object and displayed via a picturebox? If so, the amount of RAM required in order to buffer the entire image in memory could be a potential problem for images of this size. Is there an advisable way to have the picturebox or other display object only load portions of the image into memory on an as needed basis, and purge them once they are no longer required? Are there any built in objects/methods/properties or is there any sample code to show how to do this?
I'm wondering how to maintain the aspect ratio (i.e.: 16x9) of a window in WPF upon resize--if possible in a way that leverages MVVM.
View 1 RepliesI want my program to take an image of the screen every second or so acording to a timer i have the screen capture code but Im not sure on how to get the program to save the image to a directory without showing the save file dialog.[code]this is the code for putting the image in the image box if possible could i have some help so that i could go straight form this code to the save without using a separate sub for it.[code]picturebox1 is the box that the image is held in but i would prefere not to have it there and like i said before as soon as the screenshot is taken i would like it to be saved to a directory of the users choice.If possible i would like each image to be named after the time it was taken.
View 7 RepliesIm making a small tool that helps gamers keep track of their kills and deaths, and their kill/death ratio.I calculate ratio on startup of the program, straight after kills and deaths are loaded off my website.Dim ratio As Decimal ratio = Val(txt_kills.Text / txt_deaths.Text) At the moment, kills = 172 and deaths = 145. Ratio results in 1,1862068. How can I round this number up and turn this into a number with 2 integers after the dot? ( 1.19 ) I tried a hundred things so far but I cannot figure this out.
View 3 RepliesI'm trying to to figure out how to calculate monitor aspect ratio. I have resolution ad i can do fractional deviation by hand but how can I di that w/ the code?
View 5 RepliesI did a little search on here and google, I tried to find the answers for how to change the aspect ratio on shockwave but there is no answers. Is it possible to change the pixel ratio on shockwave?? I hope there is solution for my needs.
View 10 RepliesSo I need to write a program that will approximate PHI (the golden ratio) using Fibonacci Numbers. It has to be within a negative power of 10 (between -1 and -16) oh PHI. So for example, if I put -2 into the input, the approximation of PHI would have to be with 10^-2 of the number that we're using of 1.618033988749895. Also, we need to show how many Fibonacci terms that were used to get to that number and the difference that the number that we approximated is to PHI.
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how to change the aspect ratio on shockwave but there is no answer.
View 13 RepliesI'm using a web cam that takes 320 X 240 pictures. This sort of gives the picture a "landscape" look to them, and I need to re-size the pictures to a 169 X 225 "portrait" picture. Its for a badge program. Anyway, when I re-size the pictures, they get all scrunched up because of the difference in aspect ratio. Is there a way to re-size the image and the aspect ratio at the same time? Would this be considered cropping or resizing? I'm a little confused on where to begin. I mainly use VB, but if someone has a good example in C#, ill take the time to convert it.
View 3 RepliesI'm using a web cam that takes 320 X 240 pictures. This sort of gives the picture a "landscape" look to them, and I need to re-size the pictures to a 169 X 225 "portrait" picture. Its for a badge program. Anyway, when I re-size the pictures, they get all scrunched up because of the difference in aspect ratio. Is there a way to re-size the image and the aspect ratio at the same time? Would this be considered cropping or resizing?
View 5 RepliesI want to write a program to do Markov chain, but my states are quite large. First of all I calculate all the transition probabilities and revenues for all states(1381860 total states), and store in a multidimensional array. Public RevArr(0 To 9, 0 To 750, 0 To 282) As Long
After that the iteration of markov chain should use these as inputs to calculate the steady-state probabilities. But when I try to run the main code I got this error.Exception of type 'System.OutOfMemoryException' was thrown.
The following is the declaration of second array I add just another dimension for storing all the iterations, but I get this error. Dim stateprob(IT + 1, 0 To 9, 0 To 750, 0 To 282) As single
I am trying to detemine whether an image is currently displayed on the screen or not, even if only in a given location on the screen since I will know the exact pixels it will display it & everything but I am having a hard time trying to determine whether an certain image is there or not.
View 1 RepliesI have been trying to make a image recognition function for a program I am making. I am having a hard time getting it to work. It does find the image, but it says pixels don't match after going so far.
The Code below works partially. It will output the program screen as Print.bmp
Will load prizes.bmp
But when it compare the images it exits after half way through like it doesn't match and ouputs test2.bmp as part of the prizes.bmp with a black area in it.
Module ImageFunctions
Public Declare Function PrintWindow Lib "user32" Alias "PrintWindow" (ByVal hwnd As IntPtr, ByVal hDC As IntPtr, ByVal nFlags As UInt32) As Boolean
Sub Print()
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I was wondering if their is a way to set my program to search for a certian image or a set of pixels on the screen every 5 seconds, and if the specific image is on the screen, click it.
View 3 RepliesHaving many thousands of pictures, I made a screen saver with the functionality I want. If the LAN path goes away it reconnects later, bad pics can be deleted, rotated and saved, etc. Sometimes the pics don't size correctly and expand off the screen. The problem may be reuse of the same picturebox. What I might do is have a dedicated picture box with autosize left on, use that to obtain raw image size, then reload again into the picture box that will be displayed.
Private Function loadimage(ByVal pic As PictureBox, ByVal lab As Label, ByVal fname$) As Boolean
With pic
.SuspendLayout()
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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 use this code for maintaining aspect ration of form when resizing:
Public Class Form1
Public Structure Rect
Public left As Integer
Public top As Integer
Public right As Integer
Public bottom As Integer
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