Does anyone know how to create a custom start and end cap for a line drawn with System.Drawing.Pen? I wanted to use a custom start and end cap that I have from an image that I created that contains two arrows pointing in the same direction one after the other.[code]...
View 1 RepliesI am using this code to draw a line on a form using textboxes as the x and y coordinates. I then click the button with the code below that will draw the line.
Before the new line is drawn, I would like to have previous lines deleted first.
How can I delete these lines?
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim canvas As New ShapeContainer
[Code].....
I created an image (.png) with a transparent background and I'm trying to show it in a ListView. So I added the image to the ImageList belonging to the ListView, however when drawn, there is a partial white circle around the image. I checked and rechecked the actual image and there are absolutely NO white pixels at those positions.
[Code]...
I want to draw lines (paths) for AI to follow. I need to know the X,Y coordinates of each pixel in the line.Lines drawn straight vertical (0 or 180 Degs), diagonal (45 or 225 Degs), or horizontal (90 or 270 Degs) are easy to map.I need to know how to map straight lines that are not one of the those three. Like 1 degree to 44 degrees, 46 degrees to 89 degrees, and so on...
View 1 RepliesI'm creating a type of drawing program. The user can draw a line, much like in word or paint, etc. But once the line is drawn (to a picturebox or bitmap in memory), I want the user to be able to click on the line and drag it around (translate it).
If I know the coordinates of the endpoints of the line, as well as the pen width it was drawn with, how can I tell if a certain coordinate (mouse location) is contained by the line?
My first thought was to take a mathematical approach, like get an equation for a line, and check to see if the coordinate belonged to it. But for a higher pen width, the line is thicker, and thus contains more points.
How can I tell what coordinates are part of the line? Is there some sort of intersect function in the gdi that takes a line?
Currently I have not found a way to generate an event when a user clicks on a line that is drawn in my workspace area. The line that is drawn is created by calling the function e.Graphics.Drawline(Connector,X1,Y1,X2,Y2), where Connector is a System.Drawing.Pen object and X1,Y1,X2,Y2 are integer coordinates of the two points to draw the line between. I have not found any events such as Click that are associated with the line that I can use. Do I need to create a custom event for these lines if so how do I go about this?
View 5 RepliesI have drawn (3) lines on a panel, each a diff color. I want user to muse click on a given line to bring up a label that will explane what the line is telling the user. There s/b no bit maps involved. I am using graphics to draw the panels and lines.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
[code]....
My code above will draw the line but i can not see how to use path to get a "hit" on mouse move for the line?I use private routines to draw many panels and assign pens to colors and panels. I must be able to connect panel and line ID to pen name to know the nature of the line to label it! I can see that path must be used; but how?
I need to draw several line-graphics on a form, then select and drag individual graphics to new locations. Is it possible for example to give each graphic path an identity when drawn, then select any one (via mousedown, whatever) and link it to the dragged mouse co-ordinates until released? MS Visio has exactly this ability - can it be done in .NET?
View 4 RepliesI'm trying to create an owner drawn TabControl that looks like the tabs in Visual Studio on XP (might look different in Vista, not so sure).So far, I've got the background and the blueish border, and now I've run into some trouble drawing the 'tab headers' (where the text is displayed).Here's what I got so far:
vb.net
Imports System.Drawing.Drawing2D
Public Class cTabControl
#Region " Colors "
[code]....
Why isn't this working? How do I draw a border like this around a 'normal' OwnerDrawn tabcontrol, without the funky SetStyle method..?also, the DoubleBuffer ControlStyle (in the SetStyles method) option is not listed in the Intellisense list, but it is accepted when I finish typing it... Is that a bug?
This is what I would like to achieve:To create a custom messagebox, with varying number of buttons with custom .Text descriptions, and other features. I intended to have a property array that would be redim-ed and have values (.Text values) set by the calling class:
[code]...
how to specify a custom icon for display in the toolbox window when you create your own custom control? Something other than the dreaded "gearbox" icon.
View 2 Repliesknow how to create a custom file association ( a custom extension ) in VB .Net and how to open it on the application
View 1 RepliesI am developing a program where i will download and save an xml file from a url as abc.xml. I open the abc.xml in a datagridview with a dataset without problem.I am confused how can i read raw per raw the datagridview and assign the data in a database table? i am using vb 2008 + msde2005 express.I show the whole content of the xml file in the datagridview with the following [code]I dont know how to create a loop where i can read the datagridview line by line save data in variables (ex.strings) and save it in a databese table?
View 6 RepliesWith VB.net, I'm coding a simple application to get more used to the new .Net format.
I'd like to save all the information to a 'new' database file. how to create a database on the fly, once that is done i'll be able to connect to it no problem, but actually creating the file is proving difficult to work/find out.
Also, with vb.net and the newly created custom file, how can it be made to automatically open that information with the program?
Is there a method in installation to associate the file type with the new program? How can i check when the program loads if a database file has been 'double-clicked' (rather than just running from the .exe of the program) and proceed to load the data?
EDIT1 - Extra InfoThe windows application has many different fields and content etc, then i need to save that to a file that could later be loaded by 'double clicking'. I assumed the easiest way would be to create a mini-database for each unique file
I 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 RepliesCan VisualStudio VisualBasic be opened with a command line argument specifying a custom constant for conditional coding? Instead of specifying it at "properties > Compile > Adv Compile Opts > Custom constants", I would like to just run a .BAT file that opens VisualStudio/VisualBasic and my source code with the "Custom constant" already set for the conditional coding.
Software Developer
When I put a label on a form, the Text property in the designer can be expanded to a multi-line edit box. (This is in VS2005.)
Is there a way to get that type of edit box on a custom String property of a usercontrol?
I want to create a custom class that has inside an array of another custom class (see my code below) but when the programm runs is crashes. Why? What is the right expression???? Plz help I'm a newbie in VB.net.....
Public Class ctrarray
Public nameclass As String
Public ctrlindex(glvar_spaces) As ctrlindexclass
End Class
[code]....
I need two seperate lists, which every item is Integer, String, Bitmap - and one which every item is Integer, String String. However I don't know how to do this, or even where to look - I've googled for custom objects and custom object lists. What I'm trying to do is this.Custom Object1 is Integer, String, Bitmap Custom Object2 is Integer, String, String
In one thread I'll be adding items to List1(Of Object1), and processing them, and adding the results to List2(Of Object2), however I need to be able from other threads to look at the list and say only give me the items where Integer = (my thread ID), is this possible? Any help, or even links to information that would be relevant to this request would be helpful?
I came across a post a while back which showed a custom rich textbox control which had line numbers in its margin. Similar to what you woudl see if you we coding in the VB designer and you had your line numbers viewable.
I think it was two controls in one (i.e. two textboxes: one for the numbers, and the other for the text). However I cannot remember where I saw it.
So I know this will end up being a hard task, but I want to figure out how to do it. My language won't be outrageously sophisticated. Here is an example of what it'll do[code]...
View 9 RepliesI just have this program that validates if the selected file is an excel file, and I want this to have a separate function for validation so I can use that function to other program
View 13 RepliesI am creating a WCF in vb.net inside VS 2010. I have a handful of properties that are currently bytes (0 - 255) and represent different test scores. Is it possible for me to create my own type based on this that will only allow values between 0 and 110?[code]...
View 2 RepliesI want to create ComboBox that looks like this:
I have all the images needed for this set. where should I begin to create something similar?
I'm creating an stock management application. At times I want to be able to search for a customer, location, or institution. I know how to do all of this, but what I really nee dot figure out is:How do I create/design a function that calls a form and has the user query information and then return that query's data, preferable datatable.Now, I've created the form that does all this and I have the dataTable but now I want to have a function that can call this "query form" and return that data.I was thinking I have to do something with multi-threading but maybe I'm just looking over something obvious. The best analogy of what I want to do is to create a custom dialog box, but obviously instead of returning a simple integer I'd be returning a dataTable.
View 5 RepliesI have created a control in vb.net. Now I want that control to send some message(fire an event called recieve) and the parent application that implements it will have to create an even listener called recieve and do actions accordingly.
View 3 RepliesI use VB 2008,I need to create DateTime DataGridview Column..how create Custom DataGridview Column with using DateTimePicker
View 3 RepliesI searched several keywords but could not find a good tutorial on how to create custom 'links'. My goal is for my apps to be able to handle special links inside of Outlook. The link will cause my app to display the proper info when it is clicked.
View 3 RepliesI am new in .net framework 2.0. I have to create a custom control. How to create it?
View 7 RepliesMy game is an old-school RPG. The most importand issue I have is that I want to create custom form controlls for the player and the NPC's, however althought I can create a class for e.g. the player.I have been using pictureboxes so far but they aren't as convenient as a custom form controll would be.
View 2 Replies