I'm using a KeyPress event in a VB form to move a game character around with keys. There are obstacles being moved every timer tick event. But if the player holds one of the movement keys down, the objects moving on timer ticks stop moving.
View 2 Replieshow to get the ascii of a key press on a timer.
View 6 RepliesI have a loop in my program that iterates at the start about 20,000 - 25,000 times per second. By the end of the loop, the iteration is down to about 6000 per second. [Code] The Alphabetize function merely returns the string with it's Chars in abc order. Can you see any bottlenecks or any reasons for the slowdown?
View 13 RepliesI'm trying to animate a game piece by using a picture box where the x,y location is changed as the image changes (cycles through a walk animation sequence). This all works fine, however it's too damn quick. I've tried slowing it down using a simple:
for z=1 to 1000000: next
While this works-ish there must be an easier way to slow down code....is there? On a related matter: Why does picturebox animation look so crap compared to combining images in the paint screen section? My picturebox seems to flicker every few frames.
Imports System.Speech.Synthesis
Public Class Form1
Dim speaker As New SpeechSynthesizer()
[Code]....
rate 1 is fast.. is there any way to slow it down? but rate 1 is suppose to be slow.. when i set to rate 5, cant even understand what she is saying.
so did i miss something?and one more thing.. when my app is speaking, the GUI is hanged.. i understand as one function is running, i cant do anything else..
so is there any way to set speaker in backgrond so form can perform different functions?
So I got this program to generate me some data and I want to show that data to a label.
If I don't do a display I can generate about 20,000 data per second, but if I do, I get about ~9,000 data per second.
PS. Since the generating logic in is a thread, I have a function that does the displaying to the label.
I have a application which is on timesheet. I have total of 54 columns out of which 10 columns are visible rest invisibleFirst 3 columns are Project, MileStone and Classes. Rest are Sun- Sat work hrs, TaskId, TaskDesc and so on for each day. On my grid only first 3 columns and Sun - Sat work hrs are visible, rest are invisible.These Columns from Sun - Sat do not exists in database. They are identified on the basis of date and displayed on the grid. They exists as row in database but displayed as column over the grid.
Now I have columns named SunTaskID,MonTaskID and so on till SatTaskID for holding each days taskid[TaskID is the PK of the table from which data is pulled out. And each has its own task id.] Now on the selection of SunHrs (Sunday's Work Hrs), i retrieve that days taskid and on the basis of task id i then retrieve attachments which is displayed under a listbox.Now the problem is that since a day can have multiple attachments and a user can attach multiple attachments at time. I am not able to hold the attachments.
I'm trying to do here is get VB to hold a key down until I tell it to stop. Perhaps I'm missing something but I don't understand why this isn't working. This code can hold down shift and so on for as long as I want it too but absolutely refuses to hold down what i need it too (any letter key or numpad key)[code]
View 1 RepliesI've been working on my Pacman-ish game, and I want to have a high score table be available to be seen on the main options screen. Therefore, I need to save score information, and be able to separate it into a table, specifically 3 columns (Name, Orbs Collected and Time Alive). [code]However, I have no idea where to start with the high scores table.
View 5 RepliesI am creating a game and when dice have been rolled I want the user to be able to hold certain dice.I have changed the design of the dice from labels to button controls, because whichever dice the user wants to hold thet can simply click on the relevent dice button, I used this code for holding the dice button.
View 2 RepliesI know how to sendkeys, SendKeys.Send("Hello") I know how to hit other keys, Sendkeys.Send("{ENTER}")
But how do I HOLD DOWN the Shift key, I want to be able to highlight text, I know, I need to press the Arrow keys while the shift key is held down...
So... How is it possible to Hold down the Shift key
Oh yeah, and I even know how to simimulate a mouse click, drag, let go, ect. ect...
how to hold down the shift key in VB.NET?
This has been pissing me off!!I have an XML file:
xml
<?xml version="1.0" standalone="yes"?>
<Data>[code].....
Now the problem is, B1Text (which is a string) is not either receiving the value or holding it, but B1Vis is getting the value just fine, and its right below the other one.
I am using VS 2008, VB and using a dorpdown listbox in my asp.net webpage. I select a value from the dropdown, click the submit button, when the page comes back from the server, the value in the dropdown is blank (default). The dropdown controls viewstate is enabled.
[Code]...
I seem to have a problem in finding a solution to threads.I am opening a .PDF file via an <iframe> using vb.net. Then the file is opened, it is then moved to another location. But for some reason I am unable to move the file because it "The process cannot access the file because it is being used by another process." The only way round it i have found is to kill the process for Adobe Acrobat, so the file is released. Even if i fill the iframe with something else.How would I close the file, and stop that particular file from being accessed before the move ?
View 6 RepliesI have a button that searches through a binary file to bring up customer information with the following code:
[Code]...
My problem is, I need to create a variable which holds the record number, so that the record can be edited, and put back into the file at its previous location, how would I implement this? Not sure about the code.
My problem is when I change computers, I have to change the drive letter the jump drive is located. Currently, I have the following code and have to comment out the connection to the letter drives I do not need to use.
' Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=E:Grad ProjectProject.mdb;")
' Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data
[code]......
I am currently writing a program that takes a joystick input, and simulates key presses (hold) in the active window (a game). This should be used for a virtual H-Shifter, like the one in a car, to change gears.[code]...
View 3 RepliesI am having a problem with a combobox. Here is the code I use to populate my combo box:
Dim da6 As New OleDbDataAdapter("SELECT * FROM tblVendors", cn)
Dim ds6 As New DataSet
da6.Fill(ds6, "tblVendors")
[code]....
The problem is, VendorID should be an integer. When I disply the value in the ValueMember, it shows the same text that is in the displaymember.
I'm looping through a csv file. For each line, I'm reading certain values, generating a filename, and writing the record to that file. Here is some logic
If <something that doesn't matter happens> Thendo somethingElseIf File.Exists(strOutFile & (strOutputFileName & "__" & strPrefixFileName & ".txt")) Then
strFullFileName = strOutputFileName & "__" & strPrefixFileName & ".txt" '** Double Underscores after app name
tsOutfile = New StreamWriter(strOutFile & strFullFileName)
[Code] .....
Now, obviously with the above code, there's no reason for the elseif, since they both do the same thing. The problem, however, is if I need to create a new file and write to it, everything works fine. In fact, everything will work perfectly until I need to write to a file that I already created. If I go ahead and just try "tsOutfile = New StreamWriter(strOutFile & strFullFileName)" and point it to the already existing file, I get a permission error (says the file is already open). Is streamwriter keeping an open connection to all of these files that I create? Nothing else in the program is touching these files, only streamwriter.
Here's a quick example to illustrate what is happening
Record 1 goes to file A
Record 2 goes to file A
Record 3 goes to file A
Record 4 goes to file B
Record 5 goes to file B
Record 6 goes to file B
Record 7 goes to file C
Record 8 goes to file A (Error will occur here)
I want to run a series of .BAT files - but only have ONE RUNNING at a time. If I have two or three .BAT files I want them queued up so that only one runs - then the next - and so on. I could do this with other O/S task management tools. I was going to code my own methods - seeing if a .BAT was running - holding the others - etc. But the handshaking on this operation could be painful to test... I was hoping the SCHTASKS tool in windows would be my answer - but I'm not seeing options to do this.
View 3 RepliesI have a serial port hub with 4 ports. 2 of them work perfectly and the other 2 don't.I've found out that the 2 that don't work always have CTS, CD, and DSR on/true.The 2 ports "don't work" because they aren't able to receive a response.How can I turn off CTS, CD, and DSR holding? It seems that they are ReadOnly properties.I don't know if this will help, but I've recorded a log (recorded pin values every 1 second interval) for one port that worked and another that didn't.The one that didn't work:
RTS,CTS,DTR,DSR,CD,RI,TX Total,RX Total,TX CPS,RX CPS,Break,Overrun,Parity,Framing
0,1,0,1,1,0,9,0,4,0,0,0,0,0
0,1,0,1,1,0,9,0,0,0,0,0,0,0
[code]....
As you can see, the one that doesn't work has a value of 1 in CTS, DSR, and CD at all times. Also, the one that does work was able to receive the data, which is shown by the 14.
I am trying to use several Class arrays to hold values that I will cycle through at a later point to perform some calculations. I need to change the array sizes to fit the data as it is entered. I am using one procedure to set the first element of each array and then a separate procedure to pass the additional values as they are entered.
Until my last attempt at changing my code, my StartBalance sub seemed to work, I could step through and see the values assigned to the class arrays in the code block. However, when it moved on to the Transaction sub, it did not recognize that the first set of values were set, the array shows zero values for index 1.
I have gone through several changes trying different ideas from reading blogs and articles, but I guess I am not understanding how these work. I even used the class arrays directly instead of the Property procedures to see if I would get a different result, but I do not.
I believe I must be approaching this incorrectly and though I can find dozens of examples of setting class variables and even a couple on using arrays as class variable, I can not find any that show how to then pass values to those arrays.
Public Class Statement
Private _tranDate(1) As Date
Private _amount(1) As Double
[Code]....
I am creating an ASP.Net page with VB.Net codebehind. I am using a class variable to hold data (named ods see below) from a SQL Server query so I do not have to keep going back out to the server. The class variable gets loaded ok and I populate a grid data with this dataset. However when I need to go back in and reference the dataset again, I get an error and I come to find out my dataset no longer holds the data.
Here is my declaration in my code behind:
Partial Public
Class LotTrackingMain
Inherits System.Web.UI.Page
Private con
As SqlConnection =
Nothing
Private ods
As
New DataSet
I disabled ControlBox on the form. How can I drag the window by holding down the left click on any label ? Or on any component on the form?
View 2 Repliesim trying to make vb.net translate input from an external device into keypresses. when bit = 1 i want the key down, when bit = 0 i want it up unfortunately with sendkeys it just sends the same keystroke over and over again. ive googled for days without finding a good answer.
View 7 RepliesOne of my friends has suggested that in my program i give users the ability to, when holding the Alt key,rearrange tabs in a TabControl when dragging the mouse. But im stumped as to how to do this.
View 1 RepliesI have inputs for 7 textboxes for inputs, how would i make a summary page holding the information from the textboxes. What i would like to do is enter all the information then hit a summary button to display all those inputs.
View 3 RepliesI am working on a simple program which requires me to be able to select a picture box and move it to a new location by dragging it with my mouse. This is all the relevant code I have come up with currently. however, when I run the program it tries to move to where I want it to go then it seems to revert back to its previous location.
[Code]...
whats the event handler name for holding click a button.
View 6 RepliesI put the control in the form every thing works fine, but the problem is the priority of the sequence that the code performs for example:In the Cancel Click event there are some code inside the control it self, and in the form which hold the control I also put some code it goes fine but it first perform the code in the form and then it perform the code in the control.My question is there a way to tell the click event to perform the code inside the control first and then the code inside the holding form, (priority sequence)
View 6 Replies