The code given below works fine. The only problem is mouse wheel/keyup cannot be used after the TOP image is displayed, it fills the keyboard buffer. Then I have to wait awhile to use wheel/keydown. Also the images after wheel/keydown goes beyond last image. It should stop at the last image like it stops at the first image. Code courtesy of Geek On Demand.
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i want to retrive images from imagelist,show it into pictureBox and navigate the images by pressing buttons
View 2 RepliesThe GetAsyncKeyState Api does'nt recognizes the mouse wheel rotation, I see.Is there way to control the mouse wheel rotation (always, not only when the pointer is over a form of mine) with a simple API, without to Hook the mouse?
View 2 RepliesThe idea is to scan a folder of images and then let the user navigate back and forth through the images using a couple of buttons.The problem is, I can only get it to return a single image, and not the whole lot. It's looks to me as though the images are getting assigned to the same index in the array. [code]
View 2 RepliesHow can I enable my mouse wheel while using entering codebehind in the VB IDE?
View 8 RepliesIs it possible to emulate a mouse wheel scroll up/down with VB?
View 3 RepliesTo detect rotation of the mouse wheel in .NET/WinForms, I can override OnMouseWheel. Clicking can be detected by overriding OnMouseDown (it's just the Middle button). But how do I detect tilting of the wheel (tilt to the left/right for horizontal scrolling)? Neither OnMouseWheel, not OnMouseDown is being called when I tilt the mouse wheel.
View 2 RepliesI want my combobox to work like the one in Internet Explorer Address Bar,which does not move on move wheel move and the up and down arrow keys. I tried this code but it didn't help.Private Sub ComboBox1_MouseWheel(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles ComboBox1.MouseWheel RemoveHandler ComboBox1.MouseWheel, AddressOf ComboBox1_MouseWheel End Sub
View 5 Replieshow to capture the mouse wheel if the mouse is directly over my control - regardless of what form / control has focus?? - however if another window or control is over the control at the time it won't scroll.
View 3 RepliesI have 1 panel and 1 picturebox and I want to scroll up/down picturebox with mouse wheel.
View 2 RepliesI have one form that display records and I use BindingNavigator to navigate trough the record. I want use also the wheel mouse to go up and down to the record, it's possible do this?
View 3 RepliesThe use of shift + scroll wheel is fairly common for horizontal scrolling.
Both of those are fairly easy to capture. I can use the MouseWheel event with a flag set by the KeyDown, KeyUp events to keep track of when the shift key is pressed.
However, how do I actually trigger the horizontal scrolling? I am aware of WM_MOUSEHWHEEL, can that be used to trigger the event?
Update: For a System.Windows.Form there is a HorizontalScroll property that is of type HScrollProperties. You can manipulate the Value attribute on that object to change the horizontal scrollbar's position. However, so far I haven't spotted any other controls on which that object is available.
Does anyone know of a way to disable the mouse scroll wheel when a control such as a ombobox or listbox has focus? For my purposes, combobox is all I need the answer for.I have a combobox set to trigger a SQL query on SelectedIndexChanged, and accidentally scrolling the wheel while the combobox has focus causes about six SQL queries to fire off simultaneously.
View 3 Repliesi have use one mdi form and with in i have call form1. in mdi there is menu and text box.when i run program the mouse wheel work in form1. but when i click on text box after it only mouse wheel not work on form1.
View 12 RepliesI have a multi-line text box with hundreds of lines. I would like to be able to scroll up or down in the list using the mousewheel (much like using the pgup/pgdown keys). I think I need to use the .mousewheel event, but I'm not sure how to implement this. Is that supported out of the box, or do I need to hook the mouse?
View 2 RepliesI have an unbound datagridview, where column #3 is a DataGridViewComboBoxColumn which is filled with some values for the user to choose.
Problem: mouse wheel.Users usually use the mouse wheel to scroll the datagridview. That is fine.However, if the focus is on a ComboboxCell, the wheel will not do the intended function (scrolling the grid), but will scroll the combo and change the cell value.
I am having lots of accidental changes because of that.
- Disable the wheel, if focus is ON DataGridViewComboBoxColumn ?
how to disable mouse scrolling only in selected combobox..ex. i want only scroll function ius disable only in combobox1 and combobox2
View 5 RepliesI was getting some slightly unusual behavior when using the mouse wheel for some zooming/scaling work (only vaguely related to the earlier thread, for those who remember it). Frankly, it is likely that I have a bug in some code, but that wasn't quite enough to explain what I was seeing. Therefore, I used a error logging feature in my app to note the delta being passed in each Mouse Wheel event. I then ran the app and gave the wheel one good spin, which was about the maximum that I would normally ever spin the wheel in one steady, continuous motion. I wasn't going slow, I wasn't going fast, and I rotated it about as much as my finger comfortably could in a single roll.[code]I then rolled it back the other way using the same motion, and got 8 events, mostly under 200, but one of them was -331 and the other was -7940.
After a handful of tests, it appears that the wheel event is raised often, which is no surprise, but that the values fluctuate all over the place. With a continuous rotation, or as nearly continuous as I can make it, I can see a series of events with one of them easily being ten times the rest.The problem this presents is that the scaling I am using is not smooth (nor is it standard mathematical scaling, but that's a different story). Each zoom level doubles the size of the objects relative to the previous level, though the distance between them stays the same. I would like to do this by dividing the delta by some factor, and if that is above a threshold, increase the zoom level. That won't work smoothly, in this case. If I make the factor something small enough that I pick up a small rotation, then any larger rotation is likely to include a delta that takes the screen through all zoom levels in a single step. Alternatively, if I make the factor large, then all smaller rotations are simply ignored.One option would be to filter out rotation values below 200 and above 800, or so. I am looking for other alternatives.
My application uses a trackbar to sort images.It works best if the mouse wheel scroll lines value is one.I can advise my users to set the value themselves in the control panel having determined it is three, but I cant set a users scroll value to one for them.I would like to have some visual basic code in the form load that sets the scroll line value to one.
View 5 RepliesHow can I copy all the images in one ImageList to another ImageList?
View 15 RepliesI use this line of code to add images to a imagelist, and link it to listview, but it is very very slow. Up to 40 seconds to add 100 images.
Private Sub create()
Dim img As System.Drawing.Image
Dim imagepatha As String
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I have a picture viewer with listbox,listview,picturebox. I used code snipets and modified them for about 3 weeks now. It works pretty good too i think. But when i add images as thumbnails to my imagelist from openfiledialog i can only add about 75 images any more and i will get a out of memory error. Or if I add say like 50 twice the second 50 added will have the right names but not the right image. My question is. Is there a way to load some images pause then load some more by code for about 250 images so that the loading could clean some memory? And or code where i could add aditional images to the imagelist? And i just cant stop trying to get this Picture viewer to work right.
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If I have a winform, may I know how can I control the zoom level of the font in theapplication (as well as the application window itself obviously) by using Ctrl + Mouse Scroll Wheel? I see there is a Delta in the Scroll Wheel event, but not sure how that works.Is there any code sample that I can look into?
View 2 RepliesHow do I use a ObjectListView to show all the images in a image-list ? In the home-site of ObjectListView they have shown how to do this in C# (I am not that good with c# and delegates). But I can't get it to work in VB.net.
View 1 RepliesAs you see the code given below is not very useful. Is it possible to shorten the code. Mousewheel back and forward give the same result (next image). Keydown cannot be configured.
Private Sub Images_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
count += 1
If count + 1 > ImageList1.Images.Count Then
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I have about 100 PNG images stored in a Resource. Sometimes I need to have the same images in an ImageList, but I do not want to store the images twice in my application, so I add the images from the Resource to the ImageList during runtime when I need them.
Is there an easier way to do this than having 100 lines of code, like the small example below?
imgItems.Images.Add("A", My.Resources.A)
imgItems.Images.Add("B", My.Resources.B)
imgItems.Images.Add("C", My.Resources.C)
imgItems.Images.Add("D", My.Resources.D)
'etc
'etc
I want to make an auto log off feature, I want to detect if there is any user input, and if there isn't the user will be automatically logged off. So I want to know how to detect mouse wheel events when the form doesn't have focus.
View 1 Repliesi'm in the need to add two images to an imagelist of a button. The problem is that when i try to use the code here below : Public ImageList1 As ImageList
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i have 6 images in a listbox, and i want to show the pictures in a picturebox randomly...i'm using the following code:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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I have a tab control with two tab pages. One page has the auto scroll enabled since there is to much content in the page. The middle mouse wheel doesn't scroll the scroll bar; I have to actually click and hold the scroll bar and drag it down to scroll. Is there a property to allow this?
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