Is it possible to use the KeyDown on a picturebox?What I want is that when somebody presses the SPACEBAR the cursor has to change in the Hand-icon...and additionally do some operations when moving over the picturebox. I fact...when spacebar hasn't been pressed you can just move around the picturebox, without anything happening...with the spacebar pressed the cursor should change and you should be able to scroll the image using the mouse moving.
what I have is :
'in my global sub that loads everything, not the Main.Load, because he has to check some stuff in advance
AddHandler ACO_graph.PreviewKeyDown, AddressOf Me.ACO_graph_PreviewKeyDown
AddHandler ACO_graph.KeyDown, AddressOf Me.ACO_graph_KeyDown
I am making a program to automatically take and save screen shots and I am using the F12 button. It works fine, but the problem I have is when I press F12, it will take and input the picture into the PictureBox1, but if I try to clear it, and then do it a second time, it wont work a second time. My clear button code is: Picturebox1.dispose()
I have a picturebox set to move when the arrow keys are pressed. How do I prevent it from continously moving if the arrow key is HELD DOWN. I want to make it so the user has to press the key each time manually to move the picturebox.
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...
when adding picture to dynamic picturebox from my.resources in .dll a duplicate semi functional picturebox is added too, behind the picturebox i intended to add. has anyone seen this happening before or can provide any insight into this?
In VB6 I used some pattern of programming..I passed the picturebox as parameter to some procedure in some class and inside this procedure paint all needed graphics using this class methods.Now I want upgrade my application to vb.netBut all samples for line drawing show me how to draw inside paint event.[code]
I have a PaintEventHandler connected to a picturebox via AddHandler.
In PaintEventHandler I have coded this for writing the drawing to PictureBox1.Image:
Dim PictureBox1 As PictureBox = CType(sender, PictureBox) PictureBox1.Image = New Bitmap(PictureBox1.Width, PictureBox1.Height) Dim bmp As Image = PictureBox1.Image Dim g As Graphics = Graphics.FromImage(bmp)
... drawing something ...
PictureBox1.Image = bmp
Everything works fine but after running through the paint event handler and showing the picture on the screen it calls the painthandler again and again. It does not stop.
Replacing the code above with
Dim g As Graphics = e.Graphics
Makes it running. But then I cant save the Image to a file.
Basically, for my first VB project, I am creating a virtual keyboard where a sound is played from the resources on KeyDown. So far, the program seems to work except for the fact that each key needs to be clicked by the mouse before the sound is played by pressing each key (hence put the object in focus), where I need the key to play the sound without clicking the keyboard key (put the object in focus on KeyDown). Below is an example of my code:
Private Sub C_KeyDown(ByVal sender As System.Object, ByVal e As PreviewKeyDownEventArgs) Handles C.PreviewKeyDown ' C is the label attached to the first 'Rectangle' (Key) If (e.KeyCode = Keys.A) Then 'The A key should activate the C key on the keyboard
[code]....
I have KeyPreview set to 'True' under the form's properties.
Private Sub TxtLname_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TxtLname.KeyDown If e.KeyCode = Keys.Enter Then If IsNumeric(TxtLname.Text) Then[code]....
when I replace the keys.enter with "keys.tab" it won't work..
Private Sub TxtLname_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TxtLname.KeyDown If e.KeyCode = Keys.tab Then If IsNumeric(TxtLname.Text) Then[code].....
I'm building a slot machine, and I'm having some trouble.re's the
'Pulls down the slot If e.KeyCode = Keys.Space Then PictureBox2.Focus()
[code]....
When I debug and click space down, my picture box of the knob slides on down to 175, pauses, and shoots back up. The problem I'm running into, is that it doesn't do anything if I try to pull the knob down again. It doesn't bug out or anything, but it just doesn't do it again
my child form is a game that allows user to move using keydown event (arrow key left and right). But when i import it to MDI, keydown event doesn't work anymore. Am i missing something here?
how to use the keydown event soif you press 'A' a messagebox will popup saying you pressed A else it will say This function is not reconised i am hoping to use this knowlage to start a game so that if you press W the image will go up.
I have a program I'm working on that, for one of the features, allows the user to drag an image from a picturebox, into the main form space, anywhere they want. [code]...
When trying to drag the image from the CurrentTilePicBox, the very moment I move the mouse while dragging the cursor becomes a circle with a cross and won't drag and drop into the new picturebox.
Hey I am making a GDI++ game in vb.net. Now what I want is the monster(picturebox) to go after the player(picturebox). There Are No Vertical Walls. Only The Edge of map barriers. For example to get to the player the AI would have to go to the end of the ledge and either jump off and fall to the lower ledge or take the ladder down. There is no jumping, only falling and going up and down ladders and across the horizontal ledges. So How Can I make this pathfinding system?
I have a panel, which contaisn two Pictures.When the panel is mousehover the Pictures appears. When the panel is mouseleave the Pictures disappears.However, when I'm trying to pass the mouse between the Picturebox and Panel, the Picturebox disappears, because the panel doesn't detect that as panel area.
Private Sub Panel_MouseHover(ByVal sender As Object, ByVal e As System.EventArgs) Handles Panel.MouseHover Me.NextIMG.Visible = True Me.PrevIMG.Visible = True End Sub
Private Sub Panel_MouseLeave(ByVal sender As Object, ByVal e As System.EventArgs) Handles Panel.MouseLeave Me.NextIMG.Visible = False Me.PrevIMG.Visible = False
My app has scrolling images in the background and a picturebox on top. The image in the picturebox has transparent parts. How can It so that the transparent parts show whatever is belo the picture box, not the form background? I have tried taking screenshots and positioning them as background but this just freezes the app.
Dim ScreenSize As Size = New Size(154, 83) Dim screenGrab As New Bitmap(154, 83) Dim blank As New Bitmap(100, 300)
I need to plot some analog values read from the serial port.I plot them in a picturebox starting from left. When I reach the end of the control at the right side I shift all values to the left of a point and I plot the new point at the right, (I have some flickering but it could be acceptable). This is my plotting control.My problem is that I have to clear the control (picturebox) in order to plot the shifted graph, but the method Clear of the Graphics class clears everything inside the picturebox, even my grid.How can i make always visible a grid "in" my picturebox?
1.a transparent image with a grid over the PB? (the clear method cannot remove it)
2.an image with a grid below the picturebox that must be with a transparent background to make visible the grid?
Private Sub Form1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown If e.Control Then MessageBox.Show("aaaa") End If End Sub
As you can see, my form will check for when the control key is pressed down.But it doesn't work. Why?
I am trying to call the form_Keydown method from a procedure, CharacterJump()
Here is my
Keydown frmGame_KeyDown(Nothing, New KeyEventArgs(Keys.Right))
What I am trying to do is after the user moves the character with the right arrow key and presses the up button to jump while still holding the right arrow key, the character will continue on moving, but the code that I put only does one movement and does not keep going.
Edit: I think I know the reason why it is only doing it once; it is because the keydown procedure is being called and therefore only executed once. The question is, how do I make it so it goes to keydown and doesn't return?
I am running out of function keys and it will be nice if I can double up on some of them with the Shift Alt or Ctrl keys.I am using
if e.keydown = keys.F3 then{it does what it is supposed to}end if I tried e.keydown = keys.F3 AND e.keydown = keys.Shift but it gets ignored. Am I seeking the impossible or am I just missing something?Can some one tell me what I am missing or point me to an example?
I have a web browser in my application. A simple one with a URL bar at the top, some back and forward buttons, the web browser component and a few other stuff. One thing I want though was a 'full screen' option. In most web browser, if you press F11 it goes full screen. I can make the web browser go full screen but I can't get the F11 short cut to work.it seems, I can only do it when the web browser component isn't focussed
in my Application i have created a status strip which has three lable to show capslock status, numlock status and current date.I have used the following code, it is working perfectly when Master(MDI Parent) Load but it dosen't change when key is pressed. every time i start my application it shows the current status of the keys but dosent change when key is pressed.[code]
how to get a keydown even to work but in 2010 this seems to have changed
Private Sub Form1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress If e.Keycode = Keys.Enter Then MsgBox("test") End If End Sub
Im currently writing a program to control a Velleman k8055 usb interface, i started by assigning keyDown and Keysup to control outputs. this worked fine, now ive added buttons to control the same outputs with MouseDown and Mouseup. however when i start to debug, the mouseup and mousedown works fine, but not the keys? is there a special code to use them with one another.
Heres some of the codes for each..
Private Sub Button1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Button1.KeyUp If e.KeyCode = Keys.I Then ClearDigitalChannel(1)
I want to know how to do a keydown at form level. If I am not using Form Level the right way, this is what I mean. In my Form there is nothing.I want it so when the user presses a key that it will msgbox() something.As I said, there is nothing on the form what so ever No ComboBox, Button, nothing.
