Create Bitmaps From Filestreams?
May 22, 2009I'm trying to create a new bitmap from a filestream...I keep getting the error "parameter not valid" on the line[code]...
View 6 Replies
ADVERTISEMENT
C# - How Many Bitmaps Can Create In .NET
Jul 9, 2010.NET Bitmap class uses GDI+
I want to know how many Bitmaps I can create.
Will memory leak when create too many Bitmaps?
Create A Multipage Tiff From A Series Of Bitmaps?
Jan 23, 2009I am trying to create a multipage tiff from a series of bitmaps. The bitmaps are not saved I am creating them using graphics. The code goes something like this:
Dim info As ImageCodecInfo = Nothing
Dim ice As ImageCodecInfo
For Each ice In ImageCodecInfo.GetImageEncoders()
[code]....
The problem is I can see the first page, but no others. I have searched the forums, internet, etc., have worked on this for hours and am getting nowhere.
Binding Multiple Bitmaps?
Apr 24, 2010I'm currently working on a project where I need to bind 3 different bitmaps.Bitmap1, Bitmap2, Bitmap3.
I tried :
bitmaps = Bitmap1 & Bitmap2 & Bitmap3
But of course, that didn't work.If it's possible, I also need Bitmap1 and Bitmap3 to have a fixed size and Bitmap2 to change its width if the form is resized.
Bitmaps: Zooming To Pixel Level?
Jan 9, 2012I'm experimenting with the various graphics, bitmap and image functions of vb.net 2010, with the aim of being able to create an image processing tutorial program for my Physics AS group. Currently, I'm trying to zoom in to an image so that individual pixels are clearly visible. The below code shows what I'm doing.
My problem is that the zoomed in image always comes out blurred; the individual square pixels are not visible. I presume this is because as the DrawImage method resizes the image, it re-samples the image in some way. Is there a way of resizing the image while retaining the pixels as in the original image, so that individual pixels are visible? I've tried several other methods, including drawing to a picturebox control and then resizing the picturebox with the size mode set to zoom or stretch... this results in the same blurred image.
[Code]...
C# - Should A Function That Periodically Returns Bitmaps Re-use Them?
Jul 21, 2010I have a function that returns a bitmap meant to be used as background in a panel, and occasionally I'd have to call it to create a new background based on parameters
View 2 RepliesExtract 2 Bitmaps From Winload.exe.mui File?
Jun 19, 2010i want a way in which i can extract 2 bitmaps from winload.exe.mui file in vb.net 2008
View 6 RepliesVS 2005 Convert A Series Of Bitmaps To An AVI?
Jan 18, 2010How can I convert a series of bitmap files to an AVI (or any other format of video)? Or any format of image file? Or any Bitmap object?
View 7 RepliesVS 2008 - How To Populate ListView With Bitmaps
Jun 15, 2009I need to know how to populate a listview with all of the images from my.settings, and I need it to show the image in the listview. How would I do this? I've never used listview because I never cared to learn until now.
View 2 RepliesVS 2008 Drawing X Number Of Bitmaps?
Jan 13, 2010how to draw an unknown amount of images to a form
the amount of images should be determined during runtime.
Bitmaps And Pictureboxes, Memory Usage Off The Chart?
Apr 28, 2009Bitmaps and Pictureboxes, memory usage off the chart!???????????
View 7 RepliesFind 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.
VS 2005 Image Processing, Combine Bitmaps?
Apr 14, 2009I've searched these forums, and found some GDI and C# links, but I really want to do some image processing in VB.NET.
how I would go about combining 2 bitmaps into one, sort of superimposed on top of eachother? I don't know what libraries are available in .NET.
VS 2008 : Draw Multiple Bitmaps Onto Image?
Dec 26, 2009I want to know if there's a faster way to draw images onto a picturebox based on a list of point.
vb
Dim MyPoints as New List(Of Point)
Dim MyBitmap as New Bitmap("C:MyBitmap.PNG")
[code]....
Now, This code may be a little sloppy, but I just put it together. The image isn't very simple, but it's simple enough. After about 10 images that need to be drawn, it starts to get slow.What would I need to do to ensure it draws the images faster? If I made the image itself smaller would it make it go faster?
VS 2008 Store Loads Of Picutres In Different Bitmaps
Oct 24, 2011Basically, I have a program which screenshots the form when the person clicks their mouse button. Afetr the click it will store the screenie in a bitmap.But the problem how would I store loads of picutres in different bitmaps if they for instance clicked 100 times without having to declare the bitmaps 100 times and seeing if each has a image and then checking thge next 1.
View 1 RepliesPictureBox Control Not Display Bitmaps Specified Via Image Property
Mar 30, 2010I am writing a VB 2008 Express Edition application which has multiple forms. All of the forms contain one or more PictureBox controls. All PictureBox controls have assigned bitmaps via Image property during development mode. So far, all the bitmaps displayed during runtime without a slightest problem. Now, suddenly, not a single new one (i.e. which I add from this moment on) would display bitmap during runtime. All the old ones (i.e. those which I have added up to that unspecified point in time when something went wrong) still display bitmaps fine as they did before. But any newly added PictureBox (or, come to that, any other control which can display bitmap.
I have tried also Label control) displays the bitmap loaded via Image property only during development mode. During runtime the PictureBox shows as empty. I tried to load the bitmap during runtime via command Image.FromFile and that works fine (but I don't want to use this approach in my program). If I create a completely new application, all PictureBox controls display the bitmaps just fine. I don't get any errors or warnings in VB editor. I reinstalled the whole VB 2008 Express Edition including SP1 and .NET 3.5 SP1 with no difference whatsoever (as would be expected as any new application works with PictureBox controls fine).
Avoiding Flicker When Drawing Multiple Bitmaps With Graphics.DrawImage
Mar 15, 2011I need to draw a bitmap background with one or more moving bitmaps in the foreground; something like a chessboard where pieces move across it. I use a timer-tick event to redraw the background and then draw the relocated foreground image like the code below. But I get flicker, even though I set the form to use double-buffering. The culprit seems to be redrawing the background to refresh where the foreground images used to be; no flicker if I replace the background DrawImage with a simple Graphics.Clear. I think what I want to do is draw the background, and the foreground bitmap(s), in memory and then render it all. I used to do this with double-buffering, BitBlt, and .Refresh in VB6 but I haven't found the equivalent in VB2010. This must be a pretty common graphics requirement; what's the trick to it?
Dim Gfx As Graphics
Me.SetStyle(ControlStyles.AllPaintingInWmPaint Or ControlStyles.UserPaint Or ControlStyles.OptimizedDoubleBuffer, True)
Dim rectBrd As Rectangle 'use as clipping region for drawing
[Code].....
Interface And Graphics :: Find Good Information On Working With Bitmaps
Aug 28, 2010It seems difficult to find good information on working with bitmaps. Specifically I am looking for .NET info on getting tile graphics to the screen. What I know so far is this. I need a picturebox for the display. I need a second picture box for a back buffer and then I need a third picturebox for the tiles that I would copy to the back buffer which then gets flipped to the screen.I need this to be done with .net controls and classes or functions and etc. If anyone has good information on this, please let me know. I am using visual basic 2008 express edition.
View 2 RepliesInterface And Graphics :: Passing Bitmaps & Graphics To Subroutines As Arguments
Jan 22, 2011I used to program with Visual Basic 6, so I have alot of old programs that I'm updating, plus I'm learning the new VB2008 methods. I'm writing a program that replaces the old "BitBlit" function which is no longer supported by Visual Basic 2008. It involves three picture boxes, one holds the sprite bitmap, a second holds the mask (silhouette) of the sprite bitmap, and a third has a background image.
[Code]...
Create A Windows Form Application Program That Can Create Games Something Like Gamemaker Or Klik?
Aug 4, 2010Hello I want to create a windows form application program that can create games something like Gamemaker or Klik & Play (butt less advanced) with D&D "Drag and Drop" events and actions.
View 7 RepliesCreate A Program That Asks For Input Then Uses An Else Statement To Create A Handling Fee Balance
Nov 30, 2011To create a program that asks for input then uses an else statement to create a handling fee balance.
Input: sales record - first name, last name, purchase amount, balance before purchase
Output: report - full name, old balance, purchase amount, handling fee, new balance
Definitions: handling fee is 5% of the old balance if the old balance is less than $1000.00 else it is 2% new balance = old balance + purchase + handling fee
Processing:
Ask for and receive sales information
Calculate new balance
Print output report
End the program when a purchase amount of 9999.99 is entered
VS 2008 Object Data - Create A Class And Create A Instance Of CarData?
Nov 28, 2010I want to create a class is it where I can do...
[code]...
How do I do this? Do i create a class and create a instance of CarData? but how do I add Color and Year etc to it?
VS 2010 Create Workspace Where Can Drag And Drop Icons And Create Connection
Mar 3, 2012I Want to develop a software like Yed.i just don know where to start.how we can create a workspace where i can drag and drop icons and create connection etc etc.
View 6 RepliesCreate A Create A New Connection To Database And Produce A New Dataset For Form?
Apr 17, 2009I have produced an application which works with datasets but I now wish to provide the user the ability to add and admend records within the database.But i wish to do this in a seperate form.My current dataset instanciates classes onLoad.Should i try passing the Dataset to the new form class? although I have the problem where by when i pass the dataset to the form class using code below i get this problem:[code]Should i just create a create a new connection to the database and produce a new dataset for this form? or is there a better way to do this?
View 2 RepliesAsp.net - Create Function To Create Thambnails Of Available Images In A Folder
Aug 28, 2009I have create a CMS to upload all image to a folder using ed all my images to a folder using,
file.SaveAs(Server.MapPath("../images/") + advertID.ToString + "_" + i.ToString + fileExt)
Now, all images are saved and i forgot it create thumbnails. :(
I need to read all images at once and create thumbnails,
myimg = System.Drawing.Image.FromFile(imgFileName)
myimg = myimg.GetThumbnailImage(154, 94, Nothing, IntPtr.Zero)
myimg.Save(Server.MapPath("../Content/") + "Thumb_" + imgFileName, myimg.RawFormat)
I need this to function fast. I don't seems to know how to read these image names one by one.
How To Create Actual 'wizard' That Allows Users To Use It To Create Their Own Forms
Dec 1, 2010I've designed my own encryption application in VB 2008 that has a free tools section where users can choose a particular wizard to use from the drop down. The javascript wizards display the code required to put in their own sites. I already created wizards that users can well, use.I see people have their own "contact form wizards" on their websites all the time. Where users can use the wizard and get the displayed code to copy and paste on their sites. But trying to locate source codes to these things is very aggravating on the web.So what I want to do is create my own "form wizard" like out of javascript, that allows the user to put in some information then get the displayed code to put in their own websites. I'm not looking for the generator such as the online form generators.But the javascript source code(s) for the generator itself.Then I could simply put a form generator inside of my VB-app, that will allow the user to use the wizard, then get the html code to paste in their own sites. Preferably not the PHP one because the php backend is very difficult to put in a VB app.I know that it can be done. For example copying a web pages source code then putting it inside a string, then calling that string from a button click that will open the javascript page in the webbrowser inside the VB app.
View 2 RepliesVS 2010 Create A Program To Allow A Student To Create Their Own Schedule?
Nov 30, 2010I have a project to do for one of my classes that i need help on. Its and extra credit so im left on my own. Project Create a program to allow a student to create there own schedule. what i am trying to do is create a checkedlistbox for the student to check classes they are taking, and need something else to pop up or to show in another box or listbox the classes they can take for the next quarter. I know it has to do with if then statements but i dont know how to write basically:"if (class is checked in checkedlistbox) then ( these are the classes you can take)".
View 2 RepliesSQL Data Access: VB2008 / VB2010 - WinForms - Create A Datasourse And Drag / Drop Fields Or Tables On A Form To Create A Grid
Oct 22, 2010I have used VB (versions 2 - 6) through many years; however, I am crash-course training myself into the VB2008 / VB2010 world kicking a screaming. I would like suggestions as to what SQL database access method should I focus more on in my learning process without making me feel that I'm a million years behind. I know I have WinForms where I can create a datasourse and drag / drop fields or tables on a form to create a grid (not really what I'm looking for).
My trouble isn't so much designing the form but in how I access the database. Theres XML, LINQ to SQL, ADO.NET, and many other methods. Not only do I need to grasp these methods quickly but I also need to know what type of projects I should create. What I mean is...I was thinking that I would design a WinForm app; however, I see that there are WPF apps and others to chose from. This is getting deep. I know it depends on the project that I'm working on. My plans are to write an app based off of either an SQL Express 2008 or SQL Server 2008 database. This first app will be standalone for now but may later become multi-user. I know I'm far behind on my learning curve coming from VB6. I have read a bit on VB2005 / 2008 / 2010. I own
both VB2008 and VB2010. I use VB2008 at work. I know ADO.NET is still alive but by what I read online, it's a dying method and is only kept for backward compatibility. XML and LINQ to SQL and other methods are all pretty new to me.
Create A Button That Can Create Custom Enteties?
Feb 7, 2009I am not a new coder, but i am not a know-it-all. I have been watching some of those NVidia fluid videos, and got jealous. I thought "Why can't i do it?" I'm not good enough for OpenGL or some other 3d engine, but i thought i would try it in 2d.
View 4 RepliesCreate A Class That Will Allow To Create Windows Shortcut?
Sep 10, 2008I'm in the process of trying to create a class that will allow me to create windows shortcut; Im using the following PDF file that gives me the shortcut file structure.
Ive been able to successfully load a shortcut file and parse its Lnk File Structure but now Im on the Shell Item ID List structure but I cannot find the Structure of the ITEMIDLIST anywhere
Furthermore I know I could use the Windows script object, but this is a dependency Im trying to avoid if I can, hence writing my own Shortcut class.