I've noticed through out VB 2010 that when prompted through the intelli window to enter a POINT variable, you can just substitue X and Y values instead and this works. How do you program that option into custom classes?Make something like the code below allow X, Y coordinates to be passed instead of a POINT variable...
Code:
Public Function GetCell(AtGridPoint as Point) as integer
'Returns the cell that the point is located in
End Function
Im using ZedGraph and want to do things as points are hovered over ("show point values" has to be on). is there an event i can harness that fires when you hover over points?
View 6 RepliesI am working on a way to change either the x or y value of a point and am getting an error while doing so. the code i am using to do this is the following:pts(currentNo - 2).X = pts(currentNo - 2).X - 10pts is a list of Points and currentNo is merely a count that im using to track where i am in the list. I am getting the following error
View 2 Repliesin order to create fancy custom end caps on the ends of a line, a structure like the following can be used:
Dim pts() As Point = {
New Point(-2, -2),
New Point(0, 0),
[Code]....
be used to create the same point array. I can see splitting these values into an integer array but how would these in turn be placed in a point array of whatever size is defined by the text values so they can be converted to end points of a line that is developed as values are changed in the text box.
I'm drawing polygons,lines,etc. and I have to have the points of each precise - up to 12 decimals. Since a Point only takes integer values, I'm not sure how to handle scaling. I have a working user control, but rounding the decimals so I can put them into points is causing incorrect calculations (area, ect.).
View 4 RepliesI hve been working with points a lot recently, and I have been wondering if there is a way to set a point without setting point.x and point.y separately. For example for (3, 5): Point1 = (3, 5) But that isn't right
View 4 Repliesi've been doing some research on serialization and it seems to me that this is by far the way to go, not only are you left to concentrate on the application logic rather than on how to store your data, but reduces the cost and is capable of handling the most complex of objects, some would argue that the reason for writing to a database is the querying functionality which would be difficult if serializing the class to xml file or an xml file stored to a database, however querying the specific datbase column is the same as querying for an indexed field or a tag within an xml file i would think (its the same idea here), on top of that when you change your class object you dont have to change the way it is serialized, this is automatic, some would say yes but you can;t load previous versions of the data, but this isn't true(it can be coded for) and in general programming Version2 should be able to load version 1 and version 2 anyways. Its completly getting rid of the datataccess layer so to speak and concentrating on the business objects and presentation which to me seems for more superior.
View 10 RepliesIs there such a thing as a type similar to a point, but contains a pair of decimals, or a pair of doubles, rather than integers? I searched the forums and google with no luck. I can't believe this has never come up before, I must have been using the wrong search terms.
View 4 RepliesI have a background work reading an XML file. I want it to return an array of results which happen to be values.
I want to be able to place all the values as a point on a panel as an X asis which will be lined up with a y+10 pixels on the y axis.
I have the BGW reading the XML file and getting the values. all i need to know is how to return an array list or something similar to a can draw my line graph
I have a copy of the Bible in txt format which I need to have altered. I wish to put the book name, the chapter number and a colon at the beginning of each verse, just before the verse number. The book name and chapter number can be obtained from the beginning of each chapter and each verse within each chapter is already numbered and on a separate line in the file.
Current text
[code...]
I have a copy of the Bible in txt format which I need to have altered. I wish to put the book name, the chapter number and a colon at the beginning of each verse, just before the verse number. The book name and chapter number can be obtained from the beginning of each chapter and each verse within each chapter is already numbered and on a separate line in the file.
View 3 RepliesIs there a way to have a form event check the version of say Adobe Flash/Shockwave/Reader on the PC and then check what's available on the web?
View 3 RepliesI have a Diagonal line drawn on a picture box on my forum and i need to know if the user has clicked the line I have the Start point and End Point of the Line and the mouse x,y location So i basically need to find out if the x,y of the mouse is on the line.
View 2 RepliesI'm trying to extract a piece of text from within the string, defining both a starting point and an ending point. For instance, say I want to search for the text found between "That is a " and " car" in the string "That is a red car", so it would return "red".I know you can use .SelectionStart and SelectionLength, but the length of the word can change, so the selection length can vary. What I want is to establish a specific starting point and a specific ending point from which to extract the text from the string.
View 5 RepliesI want to know if its possible to loop in a variable and grab info from point a to point b
This is what I have stored in my Variable
PHP
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<div class="list_address">
[Code].....
i have a picturebox which displays a map i have 2 modes add point and delete point when the user clicks the picture it creates a point on the picture where the user has clicked that works perfectly its when i try and delete the point when it doesent work :/ i have all the points loading from an xml file this is the code i have:
[Code]...
basicly i want it to when the user clicks the point it fines the x any y in the xml delete the node then delete all the points on the map then reload them all according to the xml
I'm trying to calculate the direction between two points on a two-dimensional grid. Actually I want to determine if that vector is within a range of two values. Suppose the grid's origin is 0,0 at the upper left corner, and 0 degrees represents north. I have a point A on that grid. I want to know if a line from point A to point B on the grid is within a range of directions between 111.8 degrees (a little south of east) and 158.2 (a little east of south). Those are approximations; the 111.8 is 90 degrees plus the arctangent of 2/5, and 158.2 is 180 minus that value. I worked out a series of calculations worthy of a medieval astronomer, but I suspect there is a simpler way. I'm going to have to do this for a variety of other vectors, and I'd like to generalize
View 4 RepliesI know how I can construct an icon setting point by point, but that isn't what I want. I want to use a bitmap file or a jpeg -is easy to convert an jpeg to an bitmap- and built an icon that looks like this picture.
View 2 RepliesI want to make a drawing application which needs a few drawing functions I cant handle myself as im not very mathematicly inclined The first on the list of functions is to create an arc from a start point, end point and radius. The method signature is as followes.
Function CreateArc(byval StartPoint as PointF, EndPoint as PointF, Raduis as single) As PointF()
'Code to create an array of points...
[Code]....
I have a DataGridView that will occasionally have a RowError icon displayed in the RowHeader (shown below)I have code that displays a small form when the users mouse moves over the row header or clicks the row header.I would like to draw aline from the top-left of the form to the middle-right of the row header.I basically want to point from the form to the error icon.
View 1 RepliesI need to move an ellipse from a known point on the screen to another known point on the screen.
I've tried using For.....Loops with less than desired results.
I can't remember everything I've tried, a lot of trial and error has been layed to waste. Lol
I've ended up with this code after putting together what I've tried, what I've learned elsewhere, and a couple of posts I've read on here.
All I want to do is move the ellipse from one point to the other along a straight line that forms the angle between the two points (X1,Y1) and (X2,Y2), make it grow from 2 pixels at it's start, to about 80 pixels by the time it reaches half way, then shrink from 80 pixels back down to 2 pixels by the time it reaches the point (X2,Y2).
Easier said than done.
Here's what I have at the present.....
Dim W As Integer
Dim H As Integer
Dim Num As Integer
[Code].....
....This seems like such a simple task, yet it's been a week since I came up with the idea, and I've had little success.
come out with the codes for moving the mouse pointer from point (200, 100) to point (300, 400), repeatedly. Using VB 2008.
View 8 RepliesI looked around the forum can't find something really simple.I want to scrape everything between the
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to
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copy it and use it right after it's website and I navigate using webbrowser1.
i want to work on a shooting game,and i already have a code for the rotation of the image but i have a few problemFirst problem(for the tank /ship): i want the image to AUTOMATICALLY rotate facing the mouse cursor,i know how to rotate but but i dont know how to convert the location of the mouse to an angle that the image will face,,
View 1 Repliesassuming i have an isoceles triangle, where i know the height + base width, how
can i calculate the width of that triangle at 1/3 of the distance from the point + 2/3 of the distance from the point?
i thought it'd be simply 1/3 base width + 2/3 base width, but my drawing is +/- a few pixels when i resize it?
How do yo convert a 3d point into a 2d point that can be displayed on the screen? This is the basic code that I need:
Dim ScreenXCoord as integer
Dim ScreenYCoord as integer
Private Sub ConvertPoint(PointXCoord as integer, PointYCoord as integer,
[Code[,,,,,
If (mybyte And &H80) = &H80 then
I'm interested in this line mostly but the full sub is below. I get the point of the sub. It is turning hex D5 into binary but I can't figure what this line is doing. It looks like it's saying if (213 And 128) = 128 then... I don't understand the comparison or math or whatever.
Dim mybyte As Long = &HD5
Dim x As Int32
For x = 0 To 7
[Code].....
I work for a Aerial advertising company, and am trying to build a app that will measure a distance from one zip code to another, and then spit out a price (like if somebody wanted to fly a "Please Merry me" banner for their girlfriend) based on that distance (in air miles, not road travel). I guess I will have to use a Map api, but how in the world do I do this? I have built a very basic app, so I know some progamming, but I have never used a API.
View 1 RepliesIf I ping [URL], for example, I got:
[Code]...
That means [URL] points to 173.194.38.130 How to do so with vb.net?
In created a small window's form app and when I try to install it on a cpu running Vista I get the following error when I run the app:"the procedure entry point lstrcpyml could not be located in the dynamic link library MSDART.dll"
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