I'm trying to sendkeys to a vt320 terminal, all keys work fine BUT the arrow keys.
For some reason which I obviously don't know, when I
sendkeys.sendwait("{DOWN}")
The terminal shows the number "2" instead. (The equivalent number on the number PAD)
If I send "{UP}" it displays the number 8. (numpad as well)
Code:
Dim p As Process
p = Process.GetProcessesByName("k95")(0)
AppActivate(p.MainWindowTitle)
SendKeys.SendWait("{DOWN}")
I have an application that will run on a terminal similar to a micros terminal. The terminal is already running another vendors app that captures the users logon ID from a swipecard. I need to capture the same logon ID at the same time. This is no problem, I just hook it.
The problem is I have another app which also captures swipes. In development I am running both apps for testing. It appears that when I unhook one app it unhooks both. Rehook and all is fine. As my two apps will never be on the same terminal this is not a problem. What I am concerned about is the vendors app unhooking mine or the other way around.
I would of thought that each app would have it's own ID and that each hook would be independent. I have considered finding a way to determine if a global hook is present and then use some logic to decide on unhooking or not but can't find anything.
my project work on server if inserted data from terminal A i need display the data on terminal B
View 1 RepliesWhat is the difference between SendKeys.SendWait and SendKeys.Send?Send obviously will just send they key immediately, but does SendWait actually wait for the message to be processed or does it also send it immediately?The function's name itself is just confusing. Which one should I use if I want to send keystrokes to a 3rd party app immediately, or is there no difference? To me, a few milliseconds is a big difference.
View 3 RepliesPrivate Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
CheckBox1.Checked = True
While CheckBox1.Checked = True
SendKeys("{END}")
End While
End Sub
That is the code, the error is "SendKeys is a type and cannot be used as an expression."
I'm looking for the underlying Win32 API call that the DotNET Framework invokes on a SendKeys.Send or .SendWait call, or a Win32 API Equivalent to SendKeys. I've already experimented with SetKeyboardState which seems like the way to go, except that it does not raise any kind of keyboard event that causes the set keystates to register with an active application or the OS (at least not until another key is pressed; for example I can meddle with the keyboardstate before events process on a natural keystroke, but I can't invoke a keystroke programmatically).
View 1 RepliesI have a VB.Net 2.0 application, on my form I am using a Component ONE PDF reader control.I am trying to send to this control a F4 keystoke to close the navigation panel when it opens the PDF file. It is not working or not accepting the sendkey.I put focus on the control first. Code below:
Me.PDF1.Focus()
Me.PDF1.Select()
My.Computer.Keyboard.SendKeys("{F4}", True)
I have tried different variations of the Sendkeys with no success.
My app deals with football, and the line of scrimmage. There is an additional line, called the line to gain, used for showing where a first down is earned. I'd like to have a trackbar with two arrow on it... one for the Line of Scrimmage, and the other for the Line to Gain.
View 6 RepliesI've created a class for my game and I would like to use the arrows key to control an object on screen.
However since this is the keyDown event I've put it in the main form -form1 But it says that .Left is not part of my class since I am trying to put this on the object that was created by the class. If I put this code in my class it says that event KeyDown can not be found because it is obviously but of the form...
Code:
Private Sub form1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
' Sets Handled to true to prevent other controls from
[Code].....
When using Sendkeys with vb.net, is it possible to tell if the target of the Sendkeys has changed between sendings?
View 1 RepliesImports System.Drawing.Drawing2D Imports System.Math
[Code]...
I am building a really complex program, and the only thing that i cannot make work right is the menu.The menu is basicaly 13 textboxes:
-txtMenu1
-txtMenu2
_txtMenu3
There is also a cursor next to the menu with up/down end enter button.When I click the down button it moves the selector one space down and up moves it up..The problem is when i click the down arrow it just moves the selector one space down, when i click it again it does not do anything. Same thing with the up arrow.The code for the down button is and the text boxes tab is in order from 1 to 13.When I reach the end (txtMenu13) and click down arrow, the selector goes back to txtMenu1. I need the selector to be blocked there on txtMenu13 so the user has to use the up arrow to go back to txtMenu1. The same thing when the user reaches txtMenu1 and tries to go up one more, he should not be able to do it.
Is there anyway to change the nodes in a treeview to arrows? and checkboxes for only the children of the root node?
View 15 RepliesI have a DataGrid table like this: [URL] How could I change the plain-looking arrows in the RowHeader into row number (Like 1,2,3...)?
View 4 RepliesI draw my lines with arrows:
mypen.StartCap = Drawing.Drawing2D.LineCap.ArrowAnchor mypen.EndCap = Drawing.Drawing2D.LineCap.ArrowAnchor but I want a bigger (custom) arrows in start and and of line. It's not clear how to do. Perhaps with:
mypen.StartCap = Drawing.Drawing2D.LineCap.Custom Onenew
Trying to create a custom button to reside on the desktop at:
Me.Height = PictureBox1.Height
Me.Width = PictureBox1.Width
Me.Top = My.Computer.Screen.WorkingArea.Height - Me.Height
Me.Left = My.Computer.Screen.WorkingArea.Width - Me.Width
The trouble is all the arrows point to right, and the menus open variably depending on size.
Is there anyway to make the arrows point left and make all menus open to left in same direction?
Also, Is it possible to make the width of my form autoresize to the size of a label and the image box, while keeping the imagebox at the bottom right of the screen showing the populated label to the left?
I have just made a simple application with a questionnaire. The questionnaire has all 40 questions in the same page (that was one of the specifications) which makes for quite a long form. On top of that, each question has its own group box and each group box has 4 radio buttons for the possible answers (in total 160 radio buttons).
I want the user to be able to scroll down using the up/down arrow keys. However, if he has just selected an answer, pressing the down key will only change the selected radio button (as is the expected behavior of a radio button).
How do I disable the selection of a radio button through the up/down arrows?
I am using VB .NET. I want to know how to make the scroll-up and down arrows visible for my text boxes if the user wishes to enter more lines of text than the size of the text box can take. I would like the user to be able to scroll up and down after he/she has entered all the text.
How do I activate this property - should I be using some other control other than a text box for this?
I have code to create a listbox and populate it, and would like the box to behave like it does when clicked, e.g. if you CLICK on "a" you see it blue and can press the down arrow to move down to "b". how do I achieve this programmatically?
Private Sub junkloader()
brandlist.Visible = True
brandlist.Items.Clear()
brandlist.Items.Add("a")[code].....
this code SELECTS it properly, but I want to be able to navigate with the up and down arrows. how do I do this? thanks.
I have a fairly simple VScrollbar problem: the Scroll event triggers when ANY arrow key is pushed, including left and right... I need it to trigger only when up/down arrow keys are pushed (which, I hope, is the default behaviour).
Essentially all I do is declare a VScroll As System.Windows.Form.VScrollBar and later I have a Private Sub VScrollBar_Scroll (...) Handles VScroll.Scroll that manages the event.
I noticed also that the left/right arrow scrolling is by a smaller increment than the up/down scrolling. All of this seems to happen in a very "black box" kind of way, I can't find any way of determining what should trigger the scroll event.
I'm using a datepicker for a field on my form, but the arrows are not visible. If I go to the location where they supposed to be, I can click them to change the month, but the arrows themselves are not visible.
View 1 Repliesin my program i have a timer, and every 5 sec (for example) i send a string by serial.i have to read every key pressed between each 5 sec and send a number that tells me what i am sending.what I've done is to send 1 as long as up key is pressed and send 8 as long as left key is pressed and send 9 as long as both are pressed.when i run my program, the first time i press up and left at the same time and i keep them pressed, the serial send me the first time 9 and then ignores the up key and send me 8 always.and sometimes send me 9 and after that always send me 1 and ignores the left key..the point is that vb ignores the first button i press even if i keep pressing it..what should i do to make vb.net takes two arrows keys at the same time?
View 4 RepliesI have a way of moving a picturebox. I type either 1, 2, 3, or 4 in a textbox. Each number is assigned a direction. Then I click the mouse and the picturebox moves in that direction. This is a little cumbersome for a small video game. Is there a way to assign the four arrow keys to do this?
View 3 RepliesHow to select the ListView rows by using up down keys instead of clickng each row everytime?
View 2 Repliesby defauld the usercontrol can't detect the directions(arrows) keys and other special keys(using the keydown event). but using an function i can resolve the problem:
Protected Overrides Function IsInputKey(ByVal keyData As System.Windows.Forms.Keys) As Boolean
'Need to trap the following input combinations to prevent the(UserControl)
'from losing focus:
[Code]......
I want the client to use the keyboard's up and down arrows to navigate inside a DataGridView in an existing VB program, but the DataGridView is created from "ComponentArt". At the moment I can only navigate left and right via the "tab" and "shift, tab" buttons on the keyboard..
View 2 RepliesI am trying to draw arrows between the cells on datagridview. The problem is, if I make graphics with:
VB.Net
Dim g As Graphics = dgwTable.CreateGraphics
Then draw something with this graphics, my lines stay behind the cells. Is there any way to draw onto the cells?Is there any way to draw arrows?
Im building a, lets say kiosk, that has only one form of input and that is a keyboard. I've got an up/down/left/right arrows and the enter button. I have a form that needs to have hundreds of buttons. I've arranged all my buttons in a giant grid and want the user to use the arrows to navigate through the buttons. The button that is 'highlighted', lack of a better term, has different colors so we know which button we currently are on. So when the user hits the down arrow the button below the current button gets highlighted. My issue is that when the user hits the left and right arrows the 'cursor' doesnt move left and right it moves up and down.
The left and right arrows follow the tabindex sequence.
I need to identify when a user clicks one of the updown arrows in a datetimepicker. Can that be done?ValueChanged event occurs whether the user clicks an arrow or if the value was changed programatically. I need to determine which method was used.
View 9 RepliesWe have a winform application using Oracle DataAccessClient.There is a gridview and textboxes where we when we click on a row we can populate the textboxes to show more of the data so the user does not have to scroll horizontally.The code that does this is in the cell click event. We want to also do this if the user presses the up or down arrow. We put the code in the PreviewKeyDown event but we are getting the row that had the focus rather than the row that has the current arrow pointing to it. We searched the web at a lot of forums but we can not seem to locate how to do it. How do we move the focus to the row the arrow is pointing to in the grid? [code]
View 2 Replies