I'm in this proyect where I need an area in the form where I can place just dots, then join these dots with an straight line between them.how can I do that? I placed a Picturebox to see functions there but nothing is clear.
View 3 RepliesI have a picture in my picturebox. In that picture, I need to draw a straight line between two points and calculate the length of that line (probably in pixels). Is there any suggestion how to do it?
View 2 RepliesI have a line shape which I am using as a straight 'finishing line'. As the program runs an identically shaped line shape appears. I am a little confused from where and how it is appearing, as I only have the one line shape. Also, on some runs of the program 'trails' of the cars that are racing across the screen remain.Are these issues something simple I can fix?
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If someone could post some sample code, in either c# or vb.net that would be much appreciated.
I have two points (x1, y1) and (x2,y2) and have a straight line between the 2 points, from this I can work out the distance between the 2 points lets say it is 50.What I want to do is increase or decrease the length of the line by a predefined amount lets say 10.So If I increase the line length by 10 (from 50 to 60), What I want to work out is what point(x3,y3) would be at the end of the increased line.Hope this makes sense.I have tried to work out the new point using the angle but it does not work correctly, it does not seems to produce a perfectly straight line and the angle from point (x1,y1) to the new (x3,y3) is not the same as the angle from point (x1,y1 to x2,y2).
This is what I have tried:
:I work out the angle
aAngle =Math.Atan((Y2 Y1) / (X2 X2))
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I use this cod but it not moving the text contnusly Private sub Timer1............ Label1.text = " " & Label1.text
View 1 RepliesUnder the MouseLeftButtonUp event handker store the first coordinates of the lines second endpoint. Then call the length method to obtain the distance between the two endpoints(the lines length). Fianlly display the line on the canvas and the line's length in the Length=Label. Below is the code I have so far. There are no errors, but when I run the application nothing happens.
Private Sub lineCanvas_MouseLeftButtonUp(ByVal sender As Object, ByVal e As System.Windows.Input.MouseButtonEventArg... Handles lineCanvas.MouseLeftButtonUp
Dim distance As Double
endPoint = e.GetPosition(lineCanvas)
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Problem drawing dotted path lines, with even dots along the path line.I want to draw a path line that can be any shape (square, round, outline etc), and along this path line I want even dots to appear.
I also want to be able to resize the shape (as in the example attached)This is very easy to do using "DrawPath" and defining points for the path and using a pen defined as dots.The problem I have is I want the dots to be evenly placed along the path, on any shape or size I draw.In the example I have created, I create a square with 4 points and draw a dotted path.There are 2 buttons that allows me to resize the square (larger or smaller) this helps show the problem more clearly.
The path starts at the top left corner and finishes back at the top left corner, the dots are evenly placed along the path, except the final dots at the end of the path. (Sometimes the dots are even and other times they are not even).The shapes I want to draw can be any size and any shape, but I have used a square in this example to show the problem I have. point me in the direction I need to go that allows me to draw the dots and give the impression that they are even all along the path, for all shapes and sizes.
In the pictures below if you change the size of the shape, one will have even looking dots, the other will not.
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I have a program where I have to calculate straight-line depreciation (cost * 1/n) n being the number of years to depreciate, and Double-Declining depreciation (cost * 2/n) using user input for year of purchase, cost, and years of depreciation. The output needs to be put into 4 columns in a list box. Year, Value at beginning of year, Amount of depreciation during the year and Total depreciation to the end of the year.
The problem I am having is with my loop. It is not properly calculating. I'm sure I am doing something wrong that is simple, but I can't see it.
Here is my code; the problem areas are bold:
Public Class frmDepreciation
Dim Cost, Life, Year, Depreciation, BegValue, EndValue, Total, Counter As Double
Dim fmtStr As String = "{0,-10}{1,10}{2,17}{3,5}{4,-15}"
Dim fmtStr2 As String = "{0,-10}{1,10}{2,17}{3,15}"
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Is is possible to run cmd commands straight from VB. I want to be able to set up a command in vb without showing the black cmd window
path= C:Program Files (x86)Javajre6in
java -Xmx1024M -Xms1024M -jar minecraft.jar nogui
Is it possible to run it without making a batch file? ( I want be be able to change some of the values in the commands to)I found Shell(pathname[,windowstyle]) but I am not quite sure how to use it or if it is the right code.
In the past, in C and C++ land, nested pointer dereferencing was considered, by some, to be a relatively expensive operation if executed in a tight loop.You wouldn't want to get caught with:
for (int i = 0; i < 10000000; i++)
{
j->k->l->m->n->o->p->dosomeworknowthatwereherewhynoteh();
}
because you might lose precious milliseconds. (Yes, I'm being somewhat sarcastic!)
Moving to the world of .NET.System.Runtime.InteropServices.Marshal.WriteInt32(Abort, 1)
than this?Imports System.Runtime.InteropServices.Marshal
how to calculate how many cards are needed at least to make a straight in texas hold'em?
pratic examples:[code..]
if i have a string like 12.4.23 how can i clean the dots? i want 12423
View 2 Repliesi develop a account software which is also saving picture and picture size in database(sqlserver 2000) . i want to save picture size in inches so i want to get picture dpi(dpi(dots per inches) to make inches. I am using CommonDialog1 vb6 tool to save picture and get size but now CommonDialog1 doesn't get picture inches size but get picture pixels size so i am calculating inches by pixel
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I have desiged some checks in inch.Now,i want to print check.I must know the printer's DPI(Dots Per Inch).
View 2 RepliesHow do I draw straight lines? I'm working on a tic-tac-toe game and I have no previous experience with graphics in VB 2005. The MSDN doesn't exactly do a good job of explaining it. In QBasic it was very simple, you just did:
View 2 RepliesI was just wondering how the hell you send documents of different type directly to the printer without a preview.
At first I thought this would be easy but so far I have had no joy at all.
How 2 filter 2 consecutive dot in textbox?
View 1 RepliesIf you add a list view, then add a column, and an item, set the view to Details and run it, there will be dots around the item. Those dots will also appear whenever you select an item, along with a highlighted color. I've downloaded projects that don't have them, and when comparing I don't see any difference in listview settings between that and my listview... How do you remove those dots?
View 2 Repliesim trying to download a file to the exact area of the application where ever it might be on hte computer the code im using now only downloads it to the computer and this cant work becuase all computers are diffrent
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could any one show me how that code could work but instead of to the computer but to where the application is so that who ever uses it can move there application folder where every they want and it will still work
ive got all my files that i need in my solution box in there lovely folders, written the code to the locations of them so i can call them back. If publish to a cd to be used on another pc will those files transer across and work correctly on the other pc, or do i need to change the code below to something else.here a sample of the code ive been writing to open PDF files in adobe reader, to read the files and open them?based on textbox1 entry as part of file name then button 1 to button15 pressed in relation to which product im using.Also i need to try to read across a line of data in a pdf file, and transer each block of info a text box, and how to i jump straight to a page when the pdf file opens.I cant suss it out from the document information on my harddrive.
Private Sub button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles button1.Click
If
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I am using a software that grasp information from web-sites. But I want to something on those information. For doing that, it allows me make a VB script. Actually I have never studied any Vb code. But i found a solution for my project. The data from that website is for exmp. "1.02.30" I want to change first dot into semi colon and the second dot into comma, namely "1:20,30". I found replace function and it works if i want to do "1:20:30" that. But I have to change first dot into semi colon and the second dot into comma.
View 3 RepliesPut a picturebox1 on a form2, and paste the following into form2 public class. When you run it you will see nothing untill you force a paint event by mouse dragging the form half off the screen. If you minimize - then maximise - the image dissappears and the picturebox1 does not repaint itself??? I want the picturebox1 to be "auto drawn" somehow.
Public
Class Form2
Dim colr As System.Drawing.Color
Dim grfx As System.Drawing.Graphics
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Picture 1 shows an application that I am currently writing that uses the LineShape and OvalShape out of the Visual Basic Power Packs. As I change the index in the part number combo box the A, B & C dimension change to suit the dimension in the text boxes.
Problem is the limited shapes are fine to draw a router template guide, but they are somewhat limited when it comes to drawing more complex shapes like the router bits that make the shapes in Picture 2. Is there a graphic class that would allow me to plot points and joint the dots like you get in kids colouring in books? Or something a little more adept to complex shapes like curves?
I just spotted something called the Pen Class that I might need to look more into, but not knowing the first thing about graphics. Spotted some advice passel gave in another thread to search vb.net gdi+ tutorial and it looks like the Pen Class might have potential, although I am going to have to revisit some math by the looks of things.
Make a grid with points that dots may be placed at just by clicking that point
View 4 RepliesI have a problem drawing dotted path lines, with evenly spaced dots: I want to be able to draw evenly spaced dots along a path line using points in an array, My issue is not with drawing the path line, with dotted lines, this is easy, but with the spacing of the dots at the start and end of the path line.
In the example I have created, I create a square with 4 points and draw a dotted path.The path starts at the top left corner and finishes back at the top left corner, the dots are evenly placed along the path, except the final dots at the end of the path. (Sometimes the dots are even and other times they are not even).The shapes I want to draw can be any size and any shape, but I have used a square in this example to show the problem I have.I have also attached two pictures showing the dotted path line, 1 with even spaced dots at the start / End and another showing the problem I want to resolve, with not evenly spaced dots at the start / end.The only difference between the two is the point values.
What I need to do is find a string that can be any value, and is placed between ">" and "</" with a minimun length of 5 and a maximum length of 7 and contains exactly 2 dots.
So if I have a text file like this:
<a href="www.site.com">a site</a>
text<br />
More test<br />
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I want it to find only the 5.0.77. And no, the number isn't always between h2 tags, and the number isn't even always the same. The only thing that is static about it is that is is between ">" and "</" and that it is between 5 and 7 characters and contains 2 dots.
The user enter a number in a text box. what is the best way to overcome the big problem that in some countries 10,000 is written as 10.000 when you want to give the user the freedom to select its prefered format???
View 15 RepliesThis question may be off-topic. If it should be posted in another place (even on another board) For some given curves (see sample below) I have to quantify whether the red dots in some regions of the curve are more dense at the upper or lower edge of the curve. Which algorithm might be adequate to perform this task? The curves are constructed from measurements. (No mathematical formula behind it.) Every data point has two dimensions: A value in the range 4000-7000 and a second value 0-255.
View 4 RepliesI have a problem. Im trying to create a form that enables a user to add dots on a mouse click event over an office floor plan. I have searched the web and this site but still am struggerling. My aim is to be able to draw dots (purpose is to highlight problems) and polygons over the plan (purpose to define which service area the floor area relates). I want to save all graphics to an access database with associated
fields.
My thinking is to place a second picture box over the first and make this transparent and use this as the user interface? I dont expect anyone to solve this for me, however, any help with how to draw dots and polygons through mouse down or mouse click would be most helpful.