VS 2008 Create Bitmap From Scratch?
Dec 25, 2009
I want to know how I could create a bitmap from scratch with no images to start with.(I would say need. but than you would think this was for some sort of school project and it's not.)Basically, what I have is an image which is perfectly square in shape and has a black border with a black x going through it, what is not black is white. What I'm looking to know is how to take that small image (50x50 pixels) and make an image based upon those by placing them in X Rows of X amount. I'll make a couple example to show what I mean.(X's represent the 50x50 image.
[Code]...
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Mar 19, 2010
The Vb.Net application creates a bitmap from scratch and either converts to a tiff or sends it to a printer. In both cases, the quality of the image (in this case the font) is not good at all. The sample code listed below creates the graphics object that I use to write to the image.
Dim gr2 As Graphics = Graphics.FromImage(New Bitmap(800, 1000), Imaging.PixelFormat.Format32bppPArgb))
[code]......
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Feb 2, 2010
I'm following the sops from msdn on how to create a database from scratch. I would now like to programmatically add a single record via a command button?
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May 13, 2012
I'm currently starting a new job in which I will be working on some coding in the future and need some advice on some good places to start so I can learn this correctly. Essentially we need to bring VB4 code over to the new VB.net language and I will be tasked with this. The project consists of a large battery of tests for psychiatric patients consisting of mostly multiple choice questions presented one at a time - since VB4 isn't very compatible, I think I will create a new battery from scratch while using the old code as a reference point.
I started creating the code this weekend for fun and am really enjoying it. However, a huge problem has been the abandonment of control arrays in the new language... by the time I got to creating my first questionnaire I'm stumped and can't follow the old code. Clearly I'm not ready to tackle such a large project with no experience and need to start from scratch; who would have thought .
The reason why I'm here is not to ask you to help me with my work. What I'm wondering is if any of you have any cool advice of great places to start learning the language (books, websites, etc). The amount of literature is very overwhelming so I thought I would ask some people with experience for tips. If any of you have stumbled across learning material with emphasis on coding that would be useful in the design of questionnaires or multiple choice exams, it would be particularly useful.
So far my starting place is Visual Basic 2010 Step by Step with Michael Halvorson, it seems good at a glance in the sense that it couples theory with practice but I'm already sure I'll need a little more.
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Sep 17, 2011
how can i create a monochrome bitmap from a semi transparent bitmap in vb.net? the bmp is for a transparency mask image for an icon i'm trying to create with the CreateIconIndirect API function.
i'm using vb2008 .Net3.5, but i would prefer an answer that would also work in vb2005
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Oct 10, 2010
I'm trying to create an image for printing and I know what the dimensions of the image (Bitmap object) is supposed to be in Inches but the Bitmap uses pixels so how would I define it's size to the number of pixels per inch?I do know what the printer's DPI is too, I'm able to get the horizontal DPI and the vertical DPI (which is 99.99% of the time always the same)
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Jun 3, 2009
i have drawn on a e.graphics object and now want to transfer the drawn stuff onto a bitmap object how can i do this?
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Jun 28, 2010
I'm using the following code to create a bitmap from a webbrowsercontrol that is located just off-screen (not visible to user, but control is "visible") Does the CopyFromScreen method work for something that is not ACTUALLY displayed on the screen?
I checked the values of p.X and p.Y at runtime and they are correct, but my "img" does not reflect the portion of the "Screen" i'm trying to capture.
Not sure what I'm doing wrong here, or if CopyFromScreen will still work if my control is outside of the bounds of the primaryscreen.
vb.net
'This is set at FormShown time
'Position the browser off-screen
Dim wbPoint As New Point(Me.Location.X + Me.Width - 50, Me.Location.Y)
[Code].....
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Jan 5, 2011
Dim Image1 As New Bitmap(Application.StartupPath + "ResourcesPic1.png")
But I get an error.... It says invalid argument.
I want to create a bitmap from an image called Pic1.png found in the Resources folder of my application.
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Feb 7, 2010
I've been reading a bunch of tutorials on Drawing in VB.Net, and still am reading them, but I have a question which I know I'll need to ask sooner or later:
How can I create a 4000x4000 size bitmap, and then draw a pixel at a certain coordinate on a bitmap? Like say I want to draw a BLUE pixel at coordinate X = 3000 Y = 3450. How could I do that?
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Mar 2, 2010
how can i create an icon (with transparency) from a bitmap?
i've tried this code, which i converted from a create cursor function which worked ok with transparency. i'm guessing its the IconInfo hbmMask + hbmColor properties?
#Region " CreateIconIndirect"
Private Structure IconInfo
Public fIcon As Boolean
[Code]....
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Mar 12, 2009
When I create a new bitmap the file is black. How do I make it white?
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May 13, 2012
I need to create high quality icons for my current project in vb.net
This is my code so far,
Private Sub CreateIcon(ByVal bitmapName As String)
Try
Dim fi As New System.IO.FileInfo(bitmapName)
[Code].....
But the problem is it only gives me a very low quality icon at the end. how to make a higher quality image?
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Mar 29, 2010
is it possible to create a CachedBitmap from a System.Drawing.Bitmap within Visual Basic 2005 by using APIs ?
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Jan 9, 2010
I am trying to convert from a text file to an image(bitmap) file.
For example, test.txt: 01 23 34 56 78 90
[Code]....
The first step will be reading the data, so I created some VB codes:
Dim openFileDialog1 As New OpenFileDialog()
openFileDialog1.Filter = "Text Files (*.txt)|*.txt"
openFileDialog1.Title = "Select a text File"
' Show the Dialog.
' If the user clicked OK in the dialog and ' an image file was selected, open it.
If openFileDialog1.ShowDialog() = DialogResult.OK Then
' Open file.
[Code]...
The second step will be converting the data to some data format which can be used in a bitmap image. This part is making me confused. Some codes I made is listed below:
[Code]....
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Jul 3, 2011
I'm using Bitmap to show picture box like slideshow using Timer. For each timer interval, I've to go for new instance of Bitmap, there System memory increases to 1MB, How to resolve this, 'BG is picture box
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tic Dim img As Bitmap
img = New Bitmap(System.Drawing.Bitmap.FromFile(FileIO.FileSystem.GetFiles
[CODE]...
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Dec 15, 2010
I'm trying to use a ToolTip directly to a Bitmap Object (System.Drawing.Bitmap), aparently I can't do this because Bitmap isnt a Windows Control.
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Nov 14, 2010
I was wondering is it would be possible to create a web browser from scrach(meaning not the webbrowser object) in Visual basic(or any other visual studio languages).
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Sep 17, 2008
I am trying to create bitmap with my text and transformation. I am sure that there is no error in my code. Because this code is worked previously. Here is my code.
[Code]...
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May 18, 2012
I am trying to create an empty table from scratch using Microsoft SQL Server Compact 3.5 and I am running into this problem.Please take a look at the screenshot below.[code]How come I do not have the same screenshot as the web site link below as Frank Smith showed in his example? What Do I have to do/install to have the same screenshot as in the web site below? I have Visual Studio 2008, Microsoft SQL Server 2005 and Microsoft SQL Server Compact 3.5 installed on my computer..url...
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Jun 13, 2009
This is purely academic-- I'm looking for an example of a custom control, created from scratch as in not built out of existing controls, you're actually handling drawing it, ect entirely yourself.
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Jun 22, 2011
I want to build a simple chat app where people can go a url, type in a name and a message and click submit and it will basically show that message to everyone that is current connected.Firstly i would like to state i've had zero experience in sockets programming and the like. I'm simply a web 2.0 person building websites with css/html/js/ajax and backend i have asp.net on vb and sql server for database.So basically coming from an ajax background, i was wondering why do we even need to download any additional stuff to do web sockets? I mean in ajax i can simply create a asd.aspx file and use Response.Write(text) (text based on the input which are available through dissecting the url) and voila, the server side is done, all that's left is just to create new XMLHttpRequest and stuff in the client side.
So ok I'm not worried about the client side part of Web Sockets. but the server side part of web sockets is just difficult. so in the client side i have this: ws://localhost:8080/websocket. Is it true that it will work if is also an .aspx file as such: ws://localhost:8080/websocket.aspx ?I'm wondering so how do i continue from here? in Ajax i will supply parameters from client in the url as such: page.aspx?a=1&b=2 and do output in the server using Response.Write it's all clear but how do we do it in web sockets?
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Jul 15, 2010
Rather than create a Form and use Graphics generated via the CreateGraphics Method, how does a System.Drawing.Graphics Object get built?
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Apr 21, 2009
We are migrating our applications to VB.Net 2008 from Classic VB and I need to create a base namespace and business layer. My method of approach is going to be to visit our top BA and identify the common areas of our (Fixed Income) company and try to form a decent inheritence model with as much of the code in generics as possible. What's everyone's experience of doing this and also as a second part of the question, we are looking at incorporating Web Focus into the OLAP side, how would this affect the design of the corporate namespace and it's derivatives?
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Oct 12, 2010
i would like for my first project to be a CPU stress testing program (kind of like Core Damage or Intel Burn Test).I have no problem designing the form, but how and where should I start? I've done some searching, but haven't really found much. I think the reason for that is because nobody is really going to just give out source code for anything (which is completely understandable).
The main thing I would like to understand is what exactly makes the CPU work at 100%? And how could I design it to where it automatically determines the amount of cores/threads the CPU has, and utilize them 100% without having to open up one instance for each? Or is that jumping too far ahead?
EDIT > I know that I'll need to create some kind of loop for the CPU to process over and over until closed. I was thinking something along the lines of calculating Pi to 32 million digits or something like that.
> Another goal is to have some sort of error checking capability. I am an overclocker, and I would like to have this ability with this program. For example, it I make it to calculate Pi, then I would like for it to tell me if there were any errors in the digits it produced.
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May 4, 2012
Without using MVVMLight, I need to implement drag and drop for photos onto a listbox using mvvm using Icommands preferably and interaction triggers, however if i use commands then I don't know what to pass in for a command parameter? Any ideas? Thanks.
Heres some ideas I tried:
Public Property ImageList As New ObservableCollection(Of ListBoxItem)
Public Property AddImageCommand As ICommand = New Adjuster.DelegateCommand(AddressOf addImage)
Public Property DropCommand As ICommand = New Adjuster.DelegateCommand(AddressOf dropImage)
[code]....
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May 26, 2011
Here is a short program to demonstrate my question. I just want to extraxct a rectangle bitmap from a big bitmap.Code as follows:
Private
Sub Button3_Click(ByVal sender
As System.Object,[code]....
Execution stops when hitting the Dim cloneBitmap statement, which should have created a bitmap out of the rectangle cut out.The message is:
"MissingMemeberException was unhandled.
No default member was found for type 'bitmap"
I just don't get it. Seems that the method Clone(Rectangle, PixelFormat was not found.
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Feb 10, 2010
I have a grass image located here in my directory. I want to just create a Bitmap, but I am getting an error. (Parameter is not valid.) Immediate Window: A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll
[URL]
private void Form1_Load(object sender, EventArgs e)
{
Bitmap bmp = new Bitmap("grass.jpg");
}
bertino
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Aug 31, 2009
I was wondering if it is possible to get a bitmap from a gfx... I am painting straight to a panel in the paint method I DO NOT want to have to paint to a bitmap then return that bitmap then paint this bitmap on the panel - as this is a lot slower I am doing this as i need to obtain a bitmap sometimes (if the user has requested it) 1/2 way through a draw eg the user says i want the picture after it has drawn the 3rd curve (just explaining why I want to do it this way)
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Jan 21, 2010
I borrwed some code to capture a image with the onboard Web Cam of my Laptop. It works fine, but is is saving the image as a Bitmap, how can i convert the image to a JPG file? [code]
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