Converting Signature Display On Screen To BMP Or JPG
May 26, 2009
I am working on a project where I have a signature displayed on the screen that is drawn via code based on data that has been transmitted from another device. This is from one of the samples from MS. The signature displays on screen just fine but I need to convert this to a bmp or jpg so I can save it to disk and/or print it on a report.
Code:
PrivateSub DrawSignature(ByVal g As Graphics)
' background
g.Clear(Color.Cornsilk)
' border
g.DrawRectangle(Pens.Gray, 0, 0, pictSignature.Width - 1, pictSignature.Height - 1)
' return if don't have a signature
[Code] .....
I have tried creating a new bitmap from the image property of pictSignature but it is empty even though it has an image displayed on screen. This is the first time I have tried to work with this type of coding and am totally at a loss as to what I need to do to get a bitmap from the data.
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May 15, 2011
I'm planning on using the Smart Device Framework 2.3 to use the signature control panel in a Windows Mobile 5 application using the compact framework 3.5.
The control has the option to save the signature as either a byte array of points, or as a bitmap. Now seeing as I want to store the signature in a sql compact database, I guess the byte array is going to be better. The trouble is, I'm not sure how to render that in a full WinForms application after I've transferred it back to the desktop.
I need to show the signature on a report, so it would need to be an image I could link/embed into the report.
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Apr 16, 2009
how can i capture a signature from an Electronic Signature Pad and store it in database. is there any particular api or it can be captured just like capturing an image from a WebCam. Is it manufacturer specific?
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Jul 11, 2010
I was trying to use a GetAsyncKeyState code but each time I run the program an error occers where
[Code]....
'A call to PInvoke function 'WindowsApplication1!WindowsApplication1.Form1::GetAsyncKeyState' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.' The full code is in timer with (1) time interval
[Code]...
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Dec 19, 2009
Im trying to make a custom splash screen , but i cant seem to get it to work. Im trying to display a welcome screen for 3 seconds then close and display form1 (main form).Heres my current code.
[Code]...
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Sep 24, 2009
I have a variable which I called ElapsedTime. I press a button and it displays the time in seconds since clicking the button, into a label . I did it with HTML
Private Sub Timer2_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer2.Tick
LblElapsedTime1.Text = ElapsedTime
ElapsedTime = ElapsedTime + 1
End Sub
Private Sub BtnStart_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnStart.Click
Timer2.Enabled = True
End Sub
This updates every second a bit like a simple stop watch. Great so far, because I do need the elapsed time (in seconds) for later use in my app. However, whilst elapsed time is being displayed in this label on the screen I want it to be shown in HH:MM:SS format. How can I convert it into a new variable " ElapsedTime2 " so that I can show it in the desired format yet still retain my original " ElapsedTime " variable for later.
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Jun 8, 2012
So basically, I have this RSS feed in hand. I converted the RSS into XmlDocument by the following:
Public Function GroveHallFromRss() As String
Dim webClient As System.Net.WebClient = New System.Net.WebClient()
Dim ourUrl As String = "http://abc.123.org/RSSSyndicator.aspx?type=N&
[Code]....
So I'm wondering how could I display the converted RSS as any other XML file with the nodes styled. (but not rendered and displayed by browser as RSS, but only styled XML)
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Nov 25, 2009
I need some guidance on the codes on how to :
1) convert voltage level into graphical display,and
2) Voltage indication with moving needle .
[ Info : I've already input the codes to display the voltage in numeric, but not in graphical display ] =)
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Feb 22, 2011
I'm making a hangman game right now, and the way it works is: It takes ten words from a text file and puts them in an array.It's supposed to take one of those words randomly and change all the letters to asterisks and display it in a text box for the user to start playing.I'm currently having trouble with converting the whole word into the right amount of asterisks to display.As you can see, I've already started trying something with a for next loop to go through the word and replace each letter with asterisks.But I'm not sure of the exact 'wording' of it.
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Aug 1, 2011
I am writing a VB.Net program. In my Main form, I ask the user if he has an old file that he wants me to convert first. If he says "yes", I start converting the file, loading the records into an Access database. I want to update a line on the form, showing my progress. But the form doesn't display until AFTER the entire file is converted (and loaded into the database). That means the user has to look at a form for 2-3 minutes without knowing if the program is actually processing, or is hanging up (looping).
I don't understand what is going on, and so I don't know what to do about it. I'm sure SOMEONE with experience has come across this situation before.
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Jan 7, 2011
Is there any way we can display welcome screen with vb.net?
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Mar 8, 2009
In the application i am developing is there a way i can see tha values of certain variables?[code]...
if i do: messagebox.show(varRequest1.ContentLength) it print numerically the value, but i really need to see what the cookie contains to see where i'm going wrong kinda thing i have tried .tostring but i get an error
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Jan 18, 2010
How do I get a VB program to display a character to the screen after clicking a button and then once the character has been pressed for the character to dissapear from the screen?
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Mar 10, 2012
I 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.
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Jun 10, 2010
i made a class which has speed,symbol (string "*") and location what is the acceptable way to actually display the class symbol property on the screen ?the class will be stored in a list<OF T> and will contains hundreds dynamically instances
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Jan 26, 2010
This is the current code I have so far[code]...
Currently the program starts by displaying a character to screen, but I would like it to first wait 5 seconds before displaying the first character.
Then the character should not change until the user presses the corresponding character, upon which after a further 5 seconds a new character appears.
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Dec 7, 2009
I'm writing a small app which I want to display a splash screen. The problem is my form 1 is appearing before the splash screen disappears. In fact is appears on startup blocking the splash screen. I have some code in form_load and have managed to figure out which line is causing the error, but I cant figure out why or how to prevent it.
The line reads
LoadSettings()
If I comment out this line everything runs fine and there's nothing in that sub that should affect form1. I'm doing this in vb express 2010.
Here's the code for my form_load:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
LoadSettings() ' this line is causing the problem
My.Application.MinimumSplashScreenDisplayTime = intSSDelay * 1000
'resolution check
[Code] .....
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Nov 25, 2010
I've a form set to size 1240:750. On my PC where I've VB2010 installed, the screen size is set to 1680:1024 and the form can be viewed fine but on a PC with screen size set to 1280:1024 (higher than the form) the form in question is cropped almost a third of it. To adjust the form to everyone screen size I set the below code at load with no avail.
'Autosize form to screen
Me.Height = (SystemInformation.PrimaryMonitorSize.Height) * (0.9)
Me.Width = (SystemInformation.PrimaryMonitorSize.Width) '* (0.9)
Me.MaximumSize = New System.Drawing.Size(Me.Width, Me.Height)
Me.MinimumSize = New System.Drawing.Size(1240, 750)
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Jan 14, 2010
I created a bitmap, that is supposed to be displayed on the screen, in the middle. It will have to be on top of EVERYTHING!! Even if a full screen application is running, I want it to show. My questions are: Is it possible to even display a CUSTOM MADE bitmap on the screen?
Option Strict Off
Imports System.Drawing.Drawing2D
Imports System.IO[code]....
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Feb 15, 2012
In data base data is stored as
task line_item Amount
task1 lineitem1 amount
task2 lineitem2 amount
[code]......
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Jul 1, 2009
I want to display a scrolling text on screen just a bit above the bottom of screen. Like news text scrolling at the bottom of screen. How can i do that using vb express?
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Jan 14, 2010
Hello.. I'm using a splash screen for the first time in an exercise. I have it set up to display the splash screen before going to the main form. I made changes to the splash screen title and copyright information. When I execute the program, the splash screen comes up but it's not displaying the information I changed. When I view the splash screen the changes are saved. It displays the project name where the application name should be.
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Oct 31, 2011
I have an application with a SplashScreen. While loading the application, the application will check certain conditions and if the condition fails it throws a message window. I problem is when the message window is thrown it is displayed just behind the splashscreen and user is not able to see the message and unable to understand whats happening while the SplashScreen is displayed as it is till he clicks ok on the message box.
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Apr 20, 2010
how to read the screen resolution value of the Current display (which is not the Primary display)? I have three monitors and want to place a label on a form so that when the form is moved from one monitor to another the text in the label reports the resolution currently set on that monitor.
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Jul 31, 2011
I need to display two forms on the screen. When I change the record being viewed on form1 I need to change the display info on the second screen. I now know how to share the info, but need to be able to 'refresh' the information on the second form
[Code]...
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Jun 29, 2011
BTW this issue occurs in any MS office program when the VB.Net (or even VBA) is processing information.Example: In Excel, a worksheet is displayed on the screen. I start either, a VB.Net or VBA procedure and within 30 seconds the Excel worksheet (previously displayed) blanks out. In both VB.Net and VBA,ScreenUpdating = False. My expectation is that the previously displayed screen would stay static as if I left my desk to get a cup of coffee; came back and the same ole Excel worksheet was still there?Of course, setting VBA Screen Updating = False accomplishes two goals: 1) speeds up processing and 2) saves the user from seeing unnecessary "garbage-processing" steps.Why does VBA or VB.Net ScreenUpdating = False not freeze the screen at the time of its invoking?
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Apr 26, 2010
What I am attempting to do is make a form for a tire shop. I want to put comboboxes on the left side of the form that the employees make choices from. I then want to put some kind of a table or grid looking thing on the right side of the form that will display their choices so that everyone in the shop can look at it see that "John is on bay 5 until 3:00pm". At the end of the day I want all of the combobox choices to save to a file..I dont really need the table or the grid thing to save..just the choices. If I want to do this, do I need to use that gridview tool? or can I make my own table thing to display the choices in.
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Dec 13, 2010
I have alot of forms here who need 10 or more seconds to load when the method InitializeComponent() starts to run. It have a lot of pics for that is too slow to load. I need to do a loading screen to show while the initializeComponent() components is running.
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Mar 26, 2010
I have a form with full of objects & fix in 1020 & 800 screen solution, but if I set screen solution to 800 x 640 (to see more clear other applications) then my form show mising the right & bottom parts
1. Can VB show with auto-adjustment screen (auto show the form smaller to be fit)?
2. My form somehow can be set with Horizontal & Vertical slide (or some thing similiar) so the user can see the rest?
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Dec 4, 2007
My application opens pretty quick but just for looks I put the splash screen and loading has slowed down. can i decrease the normal time for which the splash screen is shown?
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