VS 2010 - MouseMove Equation ?
Dec 19, 2010
I am rotating a picture dependant on the mousemove.
Private Sub PictureBox1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseMove
[code]...
To simplify the part I am having problems with: rotationX = CurrentPositionX + ((InitialPositionX - MousePositonX) / SlowDownDivisor)
As an example, this occurs in both X and Y; If I click and drag in the X + Direction and release the mouse button it does exactly what I want, rotation in the positive direction. If I click and drag in the X + Direction and then drag in the X - direction, the rotation continues to be positive, it doesn't reverse. If I release the button and then click again and move in the X - direction the rotation is negative as it should, but it will continue to rotate in the negitive direction until the button is release.
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Apr 20, 2012
i need some help with this problem. i have seen some solutions but written in C and im not that good to convert from C to vb.net.Well i want to 'do something' when i mouse move at an item of the combobox dropdown list.like when i move the mouse over "jkl" make the button1.text = "jkl"when i move the mouse over "def" item make the button1.text = "def"
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Aug 3, 2009
I have this in my form:
Lots of ovalshapes... What I want to do is that when the mouse is over one of the shapes, it will display the name of the shape in a label. I can easily do it for each shape like this:
Private Sub p34_mouseover() Handles p34.MouseMove
Label1.Text = p34.Name
End Sub
[Code]....
But if I do it that way, I need to make like 120 subs. Is it possible to make one sub/function/whatever that handles this for every ovalshape?
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Jun 20, 2012
Alright my goal is to test to see if the user has dragged a label over a button. I have add event handlers for MouseMove and ButtonEnter, the trick is that i dont want the buttonEnter sub to fire unless the user is actually dragging a label.Dim dragging As Boolean = False
[Code]...
I thought would work but because the user is dragging the label the mouse never actually enters the button field. I also tried doing lbl.location = button.location... but unless the label and the buttons are the exactly the same size in exactly the same location then the event wont trigger.
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Aug 26, 2010
I did a research but I can't find what I wanted. How I can detect the mouse that if I have move it or not?
I hope this is the last things I needs for the day.
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Jul 23, 2009
I have a picture box that i can click on and drag the mouse around to define a region with in it. The problem is the region is not reset when you click and drag, only when you simply click. You then need to click and drag again and it does not set the region to the new location of the mouse. It is hard to explain so i have example code below. Simply copy and paste into a form named Form1 of a new project and run.
Option Explicit On
Option Strict On
Public Class Form1
[Code].....
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Jun 21, 2010
I'm writting program in VB 2010, but I have a problem. I want to draw a temporary line on PictureBox control MouseMove event. That works fine but deleting of that line doesn't work. I tried to draw the white line on the same coordinates (PictureBox's background is white), but won't work.
Here is the code: Private Sub drawing_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles drawing.MouseMove
[Code]...
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May 19, 2009
I am using VS 2008. I have a listview control whitch 'checkboxes' property enabled.My question is: how can I trap a MouseMove event over an item only, excluding the associated checkbox?I have the following code in MouseMove event of the ListView control but it cannot differentiate between an 'item' and a 'checkbox:
Private Sub mylstview_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles mylstview.MouseMove
Dim oListViewItem As ListViewItem[code]....
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Feb 14, 2012
Actually I'm creating a simple paint application in VB.Net 2010. I want to draw shapes in my application same as we do in Microsoft Paint using mouse.
I'm a bit successful also using mousedown and mouseup events of a picture box. The mousedown event sets the starting point and mouseup event sets the ending point(diagonally opposite point of rectangle.) The problem is "Nothing seems to be occuring between mousedown and mouseup events(Well..that is obvious because I didn't add any code on mousemove event). My question is: "Can I do something to see a growing rectangle during mousemove event?". The rest of the drawing should remain unaffected.
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Sep 10, 2011
I am trying to implemented a custom dragging operation to sort panels.
I assign an object to a variable in the MouseDown event and track it's relative position by examining the MouseMove event of the neighbouring panels as I drag the mouse over them.[code]...
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Apr 26, 2012
I want to iterate through an equation and modify a number e.g. Multiply it by 10, where there is one. How do I do this?
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Mar 11, 2010
I wanted to read input equation by user A+B and assign input user value to A and B to ask them to add and give answer. But I just can't get the code to work. I using VS2005 and VB.Net.[code]
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Apr 26, 2011
Can I use a function for more than one equation?
Program Description: Fortuitous Dice is a game that requires two dice be rolled, one at a time. If p and q are the numbers rolled on the first and second die, respectively the value of the roll in the game is determined as follows:
P Q Rule (value of the roll and condition)
Even Odd 2P + Q
Odd Even P + 2Q
Even Even P + Q When P not = Q
P When P = Q
odd Odd P + Q When P not = Q
3Q When P = Q
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Jul 30, 2011
I have a decent understanding of the logic, the content. I'm working on a puzzle and I'd like to write a short program. I'm looking to fill in the following variables: AB.CDE FG.HIJ (they're part of coordinates, and the puzzle is part of a geocache)
The puzzle asks you to determine which numbers correspond to certain colors, like this:
[code...]
I need to define A-J as >= 0 and <=9. I also need to say that each color is >= 0 and <=9, but that no color can be equal to another color (purple ≠yellow, orange, etc). some number combinations won't work. Purple and yellow can't be 2 and 5 respectively, because that'd produce a negative number. I'm guessing that there will be more than one possible result. So how do I create an equation that calculates this.
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Apr 14, 2009
I would like to read a user's input equation or expression as a string (such as "y=5*(x+6)" or "cos(3)^2") and have the program evaluate it mathematically. Does .Net have any classes that could do this? Obviously, the compiler can already take a programmer's coded equation and evaluate it. Of course this is a different matter, but is there not a way to harness that same power with runtime user-created equations? Serialization or anything?
The other option (I guess) would be to create my own equation-generator - breaking an equation down into a binary tree of the numerical values and the operations I suppose. Aside from being a nontrivial task, my program needs optimal performance as these equations are in large loops. At the very least, this would add several conditional evaluations to each equation run - dunno if that adds up.
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Mar 16, 2010
The project is "kWh counter", that is, a simple program that calculates the power usage.The incoming numbers are the Power of the appliance (lightbulb) and the voltage (230/120).The formula is W=P*t that is multiplication of the power and the time it is used.I thought to connect it with a timer and the passing secconds multyply with the power, and, write the ussage on a label.This would be something like a simple digital power counter.Note that the voltage is not necesary.I am from europe where the standards are 230V.
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Feb 9, 2011
I have an equation in the form of a string:
Dim Answer as Integer
Dim AnswerBox as New RichTextBox
'... Settings for AnswerBox
[code].....
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Jun 8, 2011
My assignment is to get the Get Monthly Income (Num1)Get Monthly Home Rent/Mortgage (Num2) Get Other Monthly Payments (alimony, child support, student loans) (Num3) Display Allowable Monthly Car Payment Display Maximum Car Value (interest rate based on credit) (answer) Public Class Form1
[Code]...
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Mar 26, 2012
What I need to do is automatically generate a specific PIN number based on the current date. The formula goes like this: MMDD + 1234 = PIN. (ex. Date = 3/26/2012 -> 0326 + 1234 = 1560; With 1560 being the PIN number. I then need the PIN number to display as text, but that's the easy part, I really just need assistance with getting the date information in the proper format for the equation.
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Nov 17, 2009
after a lot of research on formatting Maths equations, apparently using MS equation edior is the easiest way to do it. But, I have no idea how to use it in VS 2008.
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Mar 9, 2011
commercial dll to be used in vb.net to calculate equations of any complexity? pass an equation as a string form and to get the final result.
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Mar 22, 2011
In our school theres a programming class and the teachers gone for the week and the sub is starting to get very frustrated, so I offered to help in any way i can. I have never programmed Visual Basic but I have programmed Ms-Dos, Javascript, HTML, *.vbs, *.ahk, *.gml, and a variety of other languages.
The class is going to build a program that calculate how many rabbits are born in a family. So when they click the button it shows in a text box the actual equation and then the answer after the equal sign that where i assume concatenation comes in.Here's the code I've thrown together for when the buttons pressed:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim RabitAmount As Integer
Dim ShowEquation As String
[code]....
I got the equation to answer it self and show in the text box but it won't show the equation?
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Jul 19, 2011
I want to display an equation prior to solving it. Obviously in MS word etc I can use equation editor to write an equation, but I'm writing my own program.
Is there an easy way to display an equation. Obviously I could use text to write eg as text "a=b^2-3(c-d)/5" and everyone here would have little problem interpretting what I want but I want this to be accessible to 12 year old children.
Alternatively I could try and manipulate lots of text boxes one on top of the other to try and explain what I'm doing
The third alternative I thought of was to write in equation editor export the graphic and then import a graphic.
I'm sure I must be trying to reinvent the wheel - which I believe is the one thing OE programming is supposed to avoid.
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Apr 27, 2012
First off the listbox needs to show the equations for the number entered between 0 and 12 example:
1+1=2
1+2=3
1+3=4
[Code]....
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Feb 20, 2009
I put this mathematical formula in VB 2008 Express Form and I have the result show in TextBox and every thing is good so far and my question is if I have a table of numbers for example if the answer in the TextBox is 0.00098 and my table show :
0.0001 to 0.00100 = 7
0.00101 to 0.002 = 8
0.00201 to 0.003 = 9
Etc
I need the number 7 to be displayed in label 1 so how can I do that?
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Jun 19, 2009
I store a formula in the database such as the following:GrossIncome+(Overtime/0.5)-Deductions=BasicNetIncome
I am able to substitute the string representations with actually values entered, thus:1000+(150*0.5)-100=BasicNetIncome
Then I remove the '=BasicNetIncome', thus:
1000+(150*0.5)-100
How can evaluate the above equation to return a result:
[Code]...
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May 30, 2012
I have a boolean condition that I want tthe program to recognize changes when they occur. Currently in order for the program to recognize a change I must restart the program.I have tried using a public timer but that didn't work.
Specifically.....
D1A.Close()
D1A = File.OpenText("MEASURE UNITS.TXT")
D1B = CStr(D1A.ReadLine)
[code]....
I am re-writting the text file "MEASURE UNITS.TXT" labeled (D1B). Depending on this boolean equation different options become available in other parts of the program.I need the program to re-adjust the boolean equation on the fly.
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Jan 30, 2011
I am trying to write code in vb.net to find a equation when data points are given. For example (1,5),(2,6) etc. I need to find a equation(not necessarily always linear) from the given points. How do I calculate a trendline for a graph? How to get equation.
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Jun 8, 2011
I have to create an app that computes the amount income tax that a person has to pay, depending on salary. Income tax should be calculated for each portion of income in each range.
Here are the following income ranges and taxes rates:
Not over $7825=10%income tax
$7825-31852 = 15%income tax
$31851-77100 = 25%income tax
$77101-160850 =28%income tax
$160850-349700=33%income tax
Over $349700 =35%income tax
Here is the code so far:
Public Class IncomeTaxForm
Private Sub calculateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles calculateButton.Click
Dim IncomeTax As Double = 0
Dim salary As Double = 0
[Code] .....
I keep getting zeros. Do I have to add another equation for each case?
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Dec 16, 2011
I have some variable that when divided I get this symbol: -1.#IND when you look at the variable in debug. This only happens when I put the equation in the Dim statement.
[Code]...
I don't have a problem. Why when I put the equation up in the declaration area it sets it to -1.#IND (I assume this is infinite or NAN or some such). I'm curious as this is the only time I've had difficulty with this.
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