I am trying to create graphics on my form, but they are not showing up. When I debug, all I see is a blank form.
Dim objGraphics As Graphics = Me.CreateGraphics
Dim m_intxAxis As Integer = 0
Dim m_intyAxis As Integer = 0[code]...
I want to create a form that shows different pictureboxes, showing different images, when the "Next" or "Previous" button is clicked.Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click 'button 1 is the "Next" button PictureBox2.Show()End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click 'button 2 is the "Previous" button PictureBox1.Show() End Sub
I wanna to load a web page and login.I know how to do this with a web browser control but:I wanna to create the control runtime and in the memory and not showing anything in the form.I wanna to load many pages in the memory and extract my information needed without anything to see by user.
View 1 RepliesI need to create a splash form with dynamic graphics like in splash screen in new Outlook 2010.
View 3 RepliesI have a loop that reads text files. If search criteria matches, then the matching data is inserted into a text box along with a link that links directly to the text file. The code to create the link looks like this:
String.Format("<a href=""{0}"">Click to open File</a>", strLogFilePath)
The only problem is it is not showing as a link in the rich text box. Instead it appears as the following: (NOTE: I removed the actual file path for privacy reasons)
<a href="file path">Click to open File</a>
The 'DetectUrls' property is set to true. I even copied the result line from the text box into a text file then saved as an '.htm' file and verified the link works.
how to create a look up showing value with discription using vb form
View 7 RepliesI created new button in my windows form. when I execute the programe this button not showing. but some button created before showing.
View 13 Repliesi am working on Scrollable form, when i am trying to print this form with PrintForm object its printing only the showing part not all the form this the code which am using. Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Me.PrintForm1.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.Scrollable) End Sub
View 7 RepliesI fear that there is something obviously wrong with my code, but I have come across a situation where the Form.Load event is not firing when I create and show my form. The form is not subclassed (as I've seen some problems with that in some searches), and I am not getting any errors thrown when I step through the code in the debugger.
I have a break point set on the IDE-created form load function (which does have the Handles MyBase.Load signature suffix) but the breakpoint is never reached and the form does display and work.The form is passed three arguments in the constructor but the IntializeComponent() function is called before anything else is done.
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I open a form using .showdialog and load some info onto it. I have code that runs on the MyBase.Load event. Basically, I have a Try, Catch, End Try block and if the Catch executes in preparing my information, I want the form to stop loading i.e. give a message and not show at all.
View 20 RepliesI am trying to create a floorPlan in Vb.Net Graphics. I thought i could use say 20 pixels = 1 Linear Metre
I am currently using a Picturebox 504 * 504 Pixel. Taking a little for borders the 4 pixels off width height this gives me 500/20 = 25 Linear Metre square which is okay.
But when i draw guide ruler lines which updates the lenght of the line being drawn i cannot get it to increment per mm.
The ruler is calculated at = (pic1.Width - 4) / 20. On the mouseMove Event the measurement which i show as a string increments by 40mm or so i need it per mm.
I have the following [code]...
when i draw the rectangle, the moment the container refreshes itself i lose my shape or if i run the app in full screen and then into normal window mode the shape either gets clipped or deleted. I would like to create a grahpics container to always keep the shape 'alive'.
Is it possible to create a square using graphics that will not show in VB.NET? I want to use it for the IntersectsWith function to detect moving rectangles that are around objects.
View 1 RepliesI have found an example about how to create 2D Graphics in Visual Basic using DirectX here. I have created a new Windows Application, I have copied the code, but I get errors. The code seems to be OK, but the application refuses to start. I have the nVIDIA 7300LE Graphics Card and I'm using Windows Vista x64 with DirectX 10 and Microsoft .NET Framework 3.5 SP1. I have also downloaded the DirectX Redistributable Package (March 2009) in order to make my application work...
View 10 RepliesAs Autodesk is going to discontinue VBA for their Inventor product in the near future I have been looking at other ways to run VB.NET in Inventor. To date it doesn't look like VSTA will be the replacement. Automation from an External VB.NET app is certainly possible, but leaves something to be desired for speed and integration. Compiled Add Ins are the Cadillac of choice but can be a royal pain to debug and develop. Autodesk now provides a lightweight VB.NET script interface called iLogic. It's main purpose is to allow extreme customization of Solid Modeling parts. The code actually resides inside the Part Model file.
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Is there a way to create an image from a graphics object?
View 3 RepliesI am creating an application where when I click on an image I need to mark the place using the x and y co-ordinates given by the click and then after marking I put a red dot/circle on that spot and then I need to save this image to a file including the dot/circle I marked. I have tried saving the image to the file but to no avail, I have been able to only save the PictureBox image and that doesn't include the graphics. It is only the base image. I have tried to save it as a bitmap but have not gotten anywhere with that either. It seems whenever I call the image.save it takes only the value of the underlying image and saves it.
Private Sub BtnCreate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnCreate.Click
pointmarked = False
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I am building a program which offers solutions to the travelling salesman problem (finding shortest tour between a set of cities while visiting each only once).
My program loads a bitmap image of a map into a picture box. From there, graphics which point out the cities as well as tour paths are drawn onto the map. My problem is that when the option to plot ALL cities is enacted, the user may choose to pinpoint a specific city with a separate control. When the user erases that pinpoint via an invalidation routine, though, it erases all graphics beneath it, which is undesirable. How can I make my tour graphics and city plots semi-permanent by drawing them directly on the image? I tried drawing them on a separate bitmap, but it 'covered up' the map image.
Why is my MDIChild form not being displayed in my MDIParent form? I want to click a button on form frmStudyResultsFilter which will then display an MDIContainer form frmCalculatedResults (maximized). When frmCalculatedResults is shown I want a small dialog modal form to be in the center of frmCalculatedResults. For some reason frmCalculatedResults will not show on top. Plus I get this error"Form that is not a top-level form cannot be displayed as a modal dialog box. Remove the form from any parent form before calling ShowDialog." Here is my code:
Public Class frmStudyResultsFilter
Private Sub btnCalculated_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculated.Click
Dim frm As New frmCalculatedResults
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am trying to figure out why my 2nd form is not displaying the value i recived in my first form.The code for the first form is:
Private Sub scannerOnCom_DataReceived(ByVal sender As Object, ByVal e As SerialDataReceivedEventArgs)
responceBack = scannerOnCom.ReadLine
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I'm sure I'm doing my login process for my app in a not so perfect way, but as with lots of things, it works. The issue is to make it work I have to use the very unpopular DoEvents thing. I would like my application to show a login screen before loading my main form. Currently I have a login dialog box with a FormOpen boolean property and an authenticated boolean property. If a user logs in successfully, I hide the login form, set formopen to false, and authenticated to true. If they cancel out, then I do the same and just set the authenticated property to false. If authenticated=false then I end the app, else I show the main form via application.run(MainForm)
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I get an error when I use the following code to create a path as described in the Mastering Visual Basic 2008 textbook. I am entering in in vb2010
Dim
MyPath As
New
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In VB.NET, I need to create an Image based on a Graphics object I have. However, there is no method such as Image.fromGraphics() etc. What should I do then?
View 2 Repliesim working on my school project to create an application with a spreadsheet form.. some forums advice me to use "Hosting Office in .NET applications" but its not what i need.. I've already tried to use the datagridview but i cant add rows..(unless the user input a data in every row). please tell me how to manipulate the datagridview for me to able to add rows and columns automatically...
View 6 RepliesI would like to know what is the best plataform for create graphics... I would like to create an apllication that have movement with graphics...I have a medium knowledge of VS2008, but i don't know if this is the best language to create graphics!
View 4 RepliesFor some reason I could never get over the look of my application, and the Microsoft controls together. Just never looked right. Nor were the controls exactly what I needed. By creating controls I can pretty much custom fit them for my application, and I love it.My question is with drawing these controls. I have 12 of them now in my current project, so I would like to make them all as efficient as possible. The biggest set back to most of them is the drawing can be a little extensive, or at least to a point where they could be more efficient. At the moment, under each paint event I have the brushes created by using blocks and then the drawing happens within them(I create all brushes first, then do the drawing, vice versa with disposing them). My question however came up when I was creating my most recent control, a SimpleList.
I experimented to see(though I'm not sure how exactly to track performance) but instead of recreating the brushes and pens etc in the paint event, I put them at the top so they're only made once, and destroyed once, rather being made and destroyed every time my control paints. My common sense tells me this is a better way of going about this but my experience can't back that up. is this the way I should be going about user drawn controls?, is there any limitations to this?(like would it be okay if I only had a limited number of brushes etc) and is the performance even that greatly impacted by making these changes that it's worth my while?
I'm in an upper level industrial engineering class in which we're learning some entry level VB programming. We're working on building a program to solve the travelling salesmen problem (finding the shortest path through a collection of cities while visiting each only once) and I'm trying to add some 'fancy' to it so I can learn some more skills. The basic program is designed to load a bitmap file of a map into a picture box and a text file with the xy coordinates of any city positions. From there, the user can plot the cities with red squares, draw a random tour through the cities, or tour the cities by always visiting the nearest neighbor not yet visited. The modification I'm working on is a method of pointing out a specific city with a black square by entering the city's number (determined from the coordinate file) into a text box.
Private Sub TxtFindCity_textchanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TxtFindCity.TextChanged
Dim ObjFindCity As Graphics = picShowMap.CreateGraphics
Dim City As Integer
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So far, the program works, but I want the black squares (but none of the other graphics) that are created to go away once the text box is cleared. As of now they just hang around on the screen until I refresh the entire image with a 'clear map' sub. Any suggestions on how to accomplish this?
I want to create a table as displayed in the image in VB.net. How do i do it ?? I tried LISTVIEW with Gridlines, but it has both horizontal and vertical lines, but in the image there is only Vertical lines.
View 2 RepliesI tried to create a lineshape and make it visible when a timer ticks. Also tried to set everything that would matter when creating it(border colors and thickness etc)
But still, I got no results.
Code:
Dim line = New Microsoft.VisualBasic.PowerPacks.LineShape(CX, CY, ccx, ccy)
line.Parent = New Microsoft.VisualBasic.PowerPacks.ShapeContainer()
line.Enabled = True
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I'm trying to find a script to create a slider button.
View 2 Replies