VS 2008 KeyDown Or KeyPress?
Aug 31, 2011
I'm currently experimenting with a tile based dungeon crawler type game. When the WASD keys are pressed it will move in that direction, however if the key is held down it will move incredibly fast over the tiles, which is not what I want.Instead I want the player only to be able to move one tile at a time, or after each key press. Is there any way to do this with the KeyDown event or do I have to use KeyPress to make sure it only activates after each full key down & up?
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Dec 26, 2009
using a datagridview and it bind by 3 rows and 3 columns,my task is when the press the F5 key then need to execute some code, my problem is if the datagridview cell is focused then now i press F5 key then the next task is executed but if the cursor is in the cell and i press F5 Key then the Key events was fired
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Mar 7, 2009
In the application I'm working on I use F1 and also a right mouse click to close the application since the graphics display full screen and there's no control in the upper right corner to close with. I use a good number of different keypresses to control things and everything works fine. When I switch away from the form that the applications starts in to a different form I'm not getting any response from either a KeyDown or a KeyPress event. Maybe someone knows what's going on. The ButtonClick and MouseDown events are responding just fine but for some reason the KeyDown and KeyPress events aren't. Below is code for one of the Forms that is unresponsive in this way. [code]...
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Mar 10, 2011
I'm using VB.NET (2008) and .NET framework 3.5. In my application I've got an on screen button that, when pressed, sends "00" as the characters [via SendKeys.Send("00")]. I also have a keyboard that has a '00' key that sends "00", two zeros, when pressed. I'm picking up the keypress using the form's KeyDown event - it fires twice, once for each "0" and works whether the on-screen or keyboard '00' is pressed. There's also a singe '0' on-screen button and key on the keyboard that sends "0".
I want to be able to treat the "00" as a single event. I.E. in the KeyDown handler, if the character is a single zero "0", I would like to check the next character to see if it is also a zero "0". If it is then I can handle it appropriately, but also need to remove it (from the keyboard buffer?) so that it doesn't fire the second KeyDown event. If it's not a zero then it should be left to fire the next event in the normal fashion.
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Apr 15, 2012
how to handle the keypress event but I can't find a way to update the datagridview cell with the new contents of the editing textbox control. If I add a character to a the text of a cell I want it to react with the new cell contents.
Private Sub DGV_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles DGV.EditingControlShowing
[Code].....
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Jun 4, 2009
I have a TextBox which Is allowed only to read certain characters. I use KeyPress event to handle this event. I understand that The KeyPress event does not handle the pressing of the DELETE key on the keyboard. I do not want the user to be able to delete characters in the txtbox by using the DELETE key, I want the user only to be able to use the backspace key. I am writing this code in Visual Basic 2005. The following code appears to work in handling the DELETE key, but I am concerned that I might get bitten by the fact that I am using KeyDown and KeyPress on the same control (txtSource).
private sub txtSource_KeyDown(byval sender as object, byval e as KeyEventArgs) handles txtSource.KeyDown
IF e.KeyData = System.Windows.Forms.Keys.Delete then
e.handled=true
end if
end sub
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May 28, 2009
I am using KeyboardCallback to log my keyboard events.How can I get keydown screen coordinates as well, Is it possible ?? I can able to capture mouse screen coordinates but I want keydown screen coordinates.For your reference I have written procedure here...
Private Function KeyboardCallback(ByVal Code As Integer, ByVal wParam As Integer, ByRef lParam As KBDLLHOOKSTRUCT) As Integer If CBool(GetAsyncKeyState(Keys.Menu) And &H8000) Then
'Alt key pressed
KeyData = KeyData Or Keys.Alt
[code].....
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Oct 27, 2011
Looked up a number of pages on KeyDown, and KeyPress events, and am just more confused than when I started. I am trying to get an event to fire adding value to a total when a user presses the Enter key. Not getting any compiler errors, and have tried utilizina MSDN's suggestions for IsInput, and PreviewKeydown. None are working..... I have tried working in the KeyDown using e.keyCode = Keys.Enter, and KeyPress using e.keyChar.Equals(Keys.Enter) in my conditionals.
Protected
Overrides
Function IsInputKey(ByVal
keyData As System.Windows.Forms.Keys)
[code]...
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Jan 9, 2009
I have a keyboard handler for my combobox1:
Private sub Combobox1_Keydown(....yaddda) handles combobox1.keydown
if e.keycode = keys.enter then
msgbox(combobox1.text)
end if
end sub
this always displays an empty message box,I need the value of the combo box before the enter was pressed, apparently the enter key empties the combobox1.text.
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Apr 9, 2010
Programming language is vb.net
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Dec 15, 2010
Is it possible to set focus on the keydown event so after the button control, sets the focus into the keydown? although says often control can have focus,.Putting a button and a keydown event on a form...
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Apr 8, 2009
I am extremely new to visual basic and it is the first time i have ever tried to program anything. I am currently using Visual Basic 2008 Express Edition which I downloaded for free off of the mictosoft website. Anyhow, to the question at hand: I was wondering how one would use keydown commands in VB express 2008. I have looked far and wide and have yet to find an answer to this. To simplify it to a specifit answer how would I move (or rather, slide), say, a picturebox to the left of the screen by holding down the left arrow key and have the picturebox stop moving after I released the arrow key. By simply seeing how the code is I should be able to do it for any other keydowns.
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Jul 5, 2009
Well I'm currently in the middle of adding a few fine details to a program I'm busy with. Basically whats happening though is that I want to be able to delete some settings on the fly instead of individually, I also want to accomplish this through a simple key press.
Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
If e.KeyCode = Keys.F1 Then
MsgBox("Do you wish to remove all entries and clear all relative data?", MsgBoxStyle.YesNoCancel)
If MsgBoxResult.Yes Then
[code]....
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Mar 5, 2009
So I'm working on my webbrowser, and just managed to get the ol' tabs working for it, but how would I go about adding a shortcut like "CTRL + T"
I tried this:
Private Sub TabControl1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TabControl1.KeyDown
[code]....
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Feb 28, 2009
Public Sub TextBox3_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox3.KeyDown
counter1 += 1
End Sub
I set TextBox3 max length to 8.What code should i write if i want it to be like this:I wan the counter1 to stop increasing if the TextBox3 reaches 8 characters. (Even there's still key down occurs)After I click a button, the counter1 is able to increase again.
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Jul 26, 2009
i recently took a look at a game i tried to put together, and decided i wanted to finish it.The game is a shooter game that creates 'walls' that the player should not be able to move into. These walls are panels, and currently, im using one keydown event to move both players. This is not a good thing, because it makes it impossible for both players to shoot and move at the same time. The player should not be able to run through the walls
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Sep 26, 2010
I try to catch the keydown event, but arrow keys don't fire this event, although I set KeyPreview = True. Arrow keys neither fire the KeyUp event. Not on the form or on any controls..
What is required to handle:
1. Arrow keydown or keyUp event with individual event handler based on mouse focus/hover (does the control have focus if mouse hovers on it, or it needs to be clicked?)
2. Mouse scroll events individually based on "mouse focus"
I don't actually need for the form... Since all the form is covered by controls.. But I need individually for different controls. Which are just buttons, labels and a chart control.
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Feb 22, 2010
I am working on a software in Visual Studio 2008 Professional, and I need to write code that will run a certain code on a keypress. I cannot find the necessary code anywhere.
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Jul 21, 2010
I have the following code which I use in another Form and it works perfectly. I copied the same code to another form, changed the controls, keys combinations, etc., but the keyboard shortcuts do nothing at runtime. None of the key combinations work, it throws no Exceptions,I put a MessageBox in the F1 KeyDown conditional, but it doesn't show. That tells me that it's not Handling the KeyDown Event.[code]
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Apr 11, 2010
i m working on this application not able to figure it out i wanna move to next record when i press keyboard Right Key and Previous Record when i press Left key
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Mar 4, 2009
In vb6, making small games came with a curse, if you pressed more than one key at the same time, they would cancel out. I went around it by making a boolean array to determine which keys were up, and which were down. anyways,
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May 12, 2009
I am trying to use the keydown/keyup events with buttons in the same project and it not working properly. I have 4 red boxes and when I press an arrow key the box should change to green according to which arrow key it corrosponds to. I have this part working fine, however only when there is nothing else in the project. When I add in say 3 buttons, Button1, Button2, Button3 and try runing the program instead of the correct red box changing to green, button outline just moves between buttons 1,2 and 3. I have tried turning tabstop off for the three buttons but that didnt work. how to read the keydown/keyup while still having buttions that can be pressed with a mouse?
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Oct 21, 2009
I am new to VB but I want to find this out. For example there are two objects in my form and when I press W,A,S,D then Object1 should move Up, Left, Down and Right respectively. Object2 moves when I press the arrow keys. How do I make them move together and also separately depending on whether the key is pressed.
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Mar 15, 2010
well im creating a very basic game and im trying to use the keypress event to control my object. right now its set up through on screen buttons like
[Code]...
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May 6, 2010
I have a datagridview bound to an Access datatable. It is nothing more than a one column list of chemicals. To allow the user to more easily navigate the list, if they press a letter it will jump to the first chemical alphabetically of that letter. If they keep tapping that same letter it will move down that list one by one. This all works fine. The problem is if you hold down the letter it will progress down the list but it doesn't show that progression. I want it to function much like if you hold down the down arrow key in a datable you'll see each successive cell be selected as it goes down the column.
[Code]...
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Jun 16, 2009
to know if a control have any handler. I have a dgv and in the editing control Showing event i add an event handler like this: VB AddHandler e.Control.KeyPress, AddressOf Grid_KeyPress_NumbersOnly This event it's added in some of the columns and for the other ones i remove it... The problem it's when the user, for example selects 3 columns where the event it's added, then if the user selects one where the event it's removed, it doesn't remove all handlers... So i have 2 solutions, when removing i put multiple removes or the other check if the event handler it's added doesn't add again. I prefer this second option, but i don't know how to check if the event it's added?
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Aug 21, 2009
I have a loop that says this...
Do
If e.KeyCode = Keys.F4 Then
Exit Sub
Else
[code]....
My problem here is that what the loop does is click on another program, thus taking the focus off of mine, how would i be able to make my app see if I press the key even if the form isn't in focus?
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Jan 15, 2009
I am trying to do an keypress event that only allows numbers, backspace, and enter. I have the part that only allows numbers
If Not (IsNumeric(e.KeyChar)) Then
e.Handled = True
End If
I need to know how to know what keychar the backspace and enter are.
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May 20, 2010
I have noticed that a form's keydown method has a slight delay the first time you hold a button. How do I get rid of it?
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Mar 10, 2009
I have a simple question regarding the KeyPress event. I'm trying to make it to where my TextBox on my form can only accept numbers 0-9, backspace and '.' /without quotes. I've successfully got it to accept numbers 0-9, accept backspace, I'm just wondering - what line do I add so that it can accept periods as well?
Here's my
Private Sub TextBox_KeyPress(ByVal sender As Object, ByVal e _
As System.Windows.Forms.KeyPressEventArgs) Handles _
TextBox.KeyPress
[CODE]...
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