Panel Containing PictureBox Flickers On Background Change - How To Eliminate This
May 13, 2011
I have a panel with the BackgroundImage set that I'm using as a button. The panel also contains a PictureBox with a png image loaded so that parts of the image are transparent and the panel image shows through. On MouseDown I change the panels BackgroundImage, then on MouseUp I change it back again. The problem is that when the panel image changes, the PictureBox flickers badly when redrawing its transparent areas. I've tried using the DoubleBuffered property of the form its on; no luck there. I've also tried SuspendLayout just before changing the image, refreshing the PictureBox, then ResumeLayout. Still no luck.
In VB6 I could embed a panel or picturebox containing controls or images within an outer panel or picturebox. If I moved the outer control then the embedded panel would move with the outer panel and stay in the same relative position, which is what I require. This doesn't seem to happen in VB.NET, the internal panel stays fixed in its location, even if I have pasted this panel within the outer container. Is there are trick to this or do I have to code to get the internal panel to move with the outer one? How does an internal container remain embedded within an outer one?
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've got a panel in windows forms (Visual Studio 2008) which has a background image (A book shelf).When scrolling the image flickers and does not redraw so looks awfully - I've tried creating a new object to use double buffering but this has no effect,
i have developed a windows application whose interface has multiple picture boxes panels with background images for rich look and also a usercontrol which contains a gridview and WPF scrollbar in an element host. All these controls are placed in one panel (this is also having a background image) which is equal to the size of windows form. The reason for placing all these controls in the panel is that the window can be resized, if needed, allowing scrollbars.
Due to these large number of controls in which some of them have transparent backgrounds loaded in a large panel having background image, the window is flickering when moved or any other application's window is moved over it.
The thing is, i would like to insert a menu strip in a panel which has got background image(.png)...in other words, i just like to create an awesome menu in my main form....you know the menu strip isn't as good as i want...so something makes a little bit stunning for the users...
My name is DN and I'm creating a strategy game. I have created a panel and I have put a PictureBox on it. Now, the problem is here: The PictureBox is bigger than the panel. I know that we can solve the problem with putting to the panel two scrollbars, but as in a good game scrollbars should not exist in the main picture (map). I want for the people to control the map with keys (up,down,left,right) and the scrollbars should not be visible.
with making a PictureBox or a Panel into a control bar like what you get at the top ofwindows. I just need to know how to make it so when you click it you can move the window.Ive put the form so it has no 'FormBorderStyle'
I just started using Visual Basic and I'm trying to make a mapping application.
Background: I'm basically trying to make something similar, but on a very small scale, to Google Maps. A user loads an image in to an picture box which is put inside a panel(so i can scroll the image). When the user has uploaded an image(a map) i want to allow him to add Labels on where he clicks. I've already done this part except the i get the wrong coordinates when i scroll through the rest of the image. If i don't scroll, the labels get placed spot-on.
I use e.X and e.Y on an event of a mousedown on the picture box. I get the correct coordinates in relation to the picture box. But when i use these coordinates to create the labels after i have scrolled, it places them in the wrong spots. I dont know how to compensate for the scrolling.
Public Class Form1 Private m_PanStartPoint As Point Private Sub Form1_Load(ByVal sender As System.Object, _ ByVal e As System.EventArgs) _
[code]....
I can drag the whole panel around and scroll thru the picture but some of my images are quite large in length, is there any way for me to add zoom in or out capabilities to this code? tried adding a couple of button on my panel for "Zoom in" and "Zoom Out" but no functionality, sorry for the syntax i deleted the code before this post trying to do it from memory, after i double clicked the button it gave me the
private sub handles button click private sub handles button click then
I have a VB.Net project. The form has a panel and few buttons inside panel... The problem is that the background image of the panel is only visible behind buttons....but not in empty space....The app is running fine on Windows 7 but the problem comes on XP....I have tried "Enable XP Visual Styles" but no luck....When i dock a button to fill all empty space then the background image is visible....but if i remove the button ... background image is not visible....
editing a picturebox...i have a class called panelArray and it builds an array of panels based on the number of panels i pass it...each panel has 4 labels and a picturebox added to it when the panel is created. I'm able to edit the labels by using something like:
Since there are 5 objects total (1 picturebox & 4 labels) i thought i would be able to just use the same strategy for the picturebox, but it doesn't like using Image in the same manner it uses .Text?
Ok i got a problem when ever i move a panel and a picturebox at the same time. Ok well them bolth move but the panel has a image in it and when ever i move it with the picturebox it creates a balck square behind the picturebox and the panel and how can i see it, well it on the top like picturebox.location(20,20) well balck quare.location(0,0) same size as picturebox how do i fix this cause it messes up the image. Here is my code:
I have one panel, and on that one picturebox with large image, so panel shows scrollbars.Now I am adding one picturebox to that picturebox (which is on panel).And when i move the added picturebox, it looks like, it is resizing the image of picturebox.Actually it is not resizing, but it seems like some barrier or something like that, or may be it is delaying in assigning the new position to picturebox. Additionaly, it works well with all other controls, just picturebox with image creates this kind of problem.[code]
If btnExpand.Checked = True Then Do While Me.Width < 860 Me.Width = Me.Width + 10
[Code]....
the code does what it's supposed to do and the end result is as expected. However.. when I use this code.. my form starts to flicker during the expanding process. I have a custom background set. And you can really see it stretching out as it's supposed to, but the entire form flashes white , black , white , black and I can see horizontal lines between the form aswell. perhaps a command like, System.Screenupdating = false ?
I have a picturebox inside a panel with scroll bars.
I can zoom in or out the image in the picturebox by changing the PictureBox.Size, and the scrollbars update automatically.
How do I convert coordinates in pixel returned by the PictureBox.MouseMove event into image coordinates when the scrollbars value is not zero and the PictureBox.Size is not the original?
My image is inside the panel, I set up a if-statement for the boundary which it can only be moved. When I tried to run it, it looks crappy when the mouse has panned it outside the boundary. Here is my code for panning:
If (mouse.Button = Windows.Forms.MouseButtons.Left) Then Dim mousePosNow As Point = mouse.Location Dim deltaX As Integer = mousePosNow.X - mouseDowns.X
I have a picturebox inside a panel, the picturebox is long, and the panel is set to allow scrollbars, which it adds. I can scroll the picture at design and runtime, but how do you scroll it programmatically?
Starting with the picture box with the top set to 0, and then doing this... (using any non-zero value as the lY value) Dim newLocation As New System.Drawing.Point(0, -lY)
[Code]....
So how do i get the value to change (e.g. to scroll the picturebox!)
I have two controls (for example the dockable toolbars) on my main form. Now one to the Left L1, and other to the right R1 now when I resize these controls during run time, slowly by a timer , L1 goes pleasantly.(Because size reduction happens from right to left on a control).
On R1, the problem is different, since it is docked right, every time it is resized, it starts flickering...
I have a picturebox with a pic in it, and I have a label on top of the picture.
I want the background of the the label to be transparent, so I set it's background prop to transparent and it's parent to the picturebox. I do this on form load, but for some reason the label entirely disappears once the form loads?
I'm trying to print the selection of my picturebox as the background of the image. I can get the image to show, but it's not the height and width of the background.
