Conflict Between Paint And Horizontal Scroll Event Handlers In Windows Form User Control
Feb 7, 2011
The following zipped up Visual Studio Solution on Skydrive is immediately buildable and runnable; a usercontrol on a Form. Problem? If you click on any of the Edit Buttons and move the Horizontal Scroll, the values as they change in the Label_Values are off by one when you release the slider button. I think this is a timing problem between the Paint handler and the Horizontal Scroll event handler at the very bottom of the User Control code. Sorry I didn't eliminate
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Aug 5, 2011
I have a DataGridView with a panel above it, that contains a group of textboxes above each column. My DataGridView has a horizontal scroll bar. What I want to do is when the DataGridView scrolls horizontally, scroll the panel with textboxes above it, so they stay aligned.I tried handling the DataGridView's scroll event, but I'm not sure what to do with it.
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Nov 11, 2010
I am having an odd problem with the Horizontal Scroll Control in my program.I am using it to scroll a series of panels across a form.This is my code:
Private
Sub scrHoriz_Scroll(ByVal
sender As[code]....
The problem is that this works perfectly if I use the left and right arrows and it also works perfectly if I use the scroll bar's slider SLOWLY. If I scroll using the slider and move it quickly then the scroll gets out of sync.The small change and large change are both set to 1 and maximum is set to 8
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Jul 27, 2011
I tried to use this code in the form:
AddHandler MyControl.MouseDown, AddressOf StartDrag
This wont give me an error, but it doesn't happen anything when I mouse down on the Control.
the same doesn't work if I put it in the user control.
Private Sub StartDrag(ByVal sender As Object, ByVal e As MouseEventArgs)
Dim Box = CType(sender, Control)
Box.Tag = New DragInfo(Form.MousePosition, Box.Location)
End Sub
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Oct 20, 2010
So I have a custom listbox that is displaying garbage text when scrolling horizontally. I need the custom listbox to stop an annoying flicker, but it's causing issues with the scroll. I think I could solve the issue if only I could access the hscroll event, but I don't know how to do that. I will put down my custom listbox class just in case you will need it to understand the problem.
Edit: I realized my question is a little vague - telling me how to access the hscroll event within the listbox will suffice
Public Class DoubleBufferedListBox
Inherits ListBox
Private resizing As Boolean
[Code]....
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Jan 7, 2011
I am developing windows application in visual basic .net 2005. I am using datagridview and i want to handle its horizontal scroll event. i was using code below,
[Code]...
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Nov 1, 2011
I am trying to control the horizontal scroll of a panel box in vb.net. The problem is that I can only seem to move it just a little bit using the following code:
Private Sub HScrollBar1_Scroll(ByVal sender As System.Object, ByVal e As System.Windows.Forms.ScrollEventArgs) Handles HScrollBar1.Scroll
panSS.HorizontalScroll.Value = HScrollBar1.Value
End Sub
[Code].....
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Nov 19, 2009
how can I enable horizontal scroll bar for datagridview control?
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Apr 17, 2009
[Code]....
I add a button to a form each time the user clicks a menu option as:
[Code]....
This draws a small blue line at the bottom of the button to show it is highlighted. Just like the mouseoverbackcolor property on a button except this will draw the line. It works fine until you slide the mouse very fast between the buttons. It is as if the mouseleave event doesnt always fire.
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Dec 10, 2009
Following default the datagridview will scroll following vertical. How can i do that. I tried :
DataGridView1.ScrollBars = ScrollBars.Horizontal but not work
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Dec 9, 2011
This is a spin-off post from another issue I am working on. The problem is related to triggering event handlers when the user makes an input into a combo box, you might even call this a complaint.I have a combobox with a DataSource and ValueMember and DisplayMember. There is no DataBindings to worry about at this point. The combobox is DropDownStyle = DropDown and I havealso enabled AutoCompleteSource = ListSource and AutoCompleteMode = SuggestAppend.The datasource contains a list of Countires, and when the user types in an entry or chooses an entry from the combobox, I should be able to detect what the user has selected ortyped immediatley after the selection, some would say it's the very purpose of the combo box.Which event would you choose to deterine what the user has entered or Selected? few events come to mind:
SelectedValueChanged
SelectedIndexChanged
Validating
[code].....
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Feb 25, 2011
Is thier a way to sort the event handlers within a module/class/form Etc? The IDE add the next event handler and the end while I would like it to put it in place. For example I have already write some event handlers for a textbox named txtEmpname and I have another text box named txtphone. they are ordered in the module in the order created.(i.e. the txtempname_Gotfocus then the lostfocus, then txtphone_gotfocus) Now when I want to add a clcik event for the txtempname the IDE put it at the end while I would like it to put it just before the txtempname_gotfocus.
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Jan 5, 2011
The code is listed below which hopefully illustrates what I'm trying to do:[code]....
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Nov 25, 2008
Using VB 2008 Express I have a form in which a number of controls which have event handlers to monitor choices the user is making. The event handlers do work as expected, but the problem I'm having shows up when I load the form.For example, I have:
Code:
Private Sub RadioButton6_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton6.CheckedChanged
MsgBox("I got checked!", MsgBoxStyle.Critical)
End Sub
When I load the form in question from the main form of the program, I get the message box, even though the user hasn't actually clicked the radio box. The problem arises when I try to use a call to a function that works fine, as long as the entire form has loaded. Called prematurely, the function fails.How do I solve this so these event handlers don't trigger when the form is being loaded?
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Mar 26, 2006
I am sure that I have read how to do this but I seem to recall that it is to do with the paint event of a control.
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Sep 10, 2009
Weird issue: I have application that I fire some code in the Form_Paint event for the main form, it works fine on my machine, but on other machines is not working at all.
I tried to debug the code on the other machine, and Form_Paint event is not triggered at all!
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Aug 25, 2010
I need a multiline TextBox which is always disabled, but it shouldn't paint itself in gray, but I want to keep its designer choosen color. I previously had the same requirement with an always-black Label (no multiline) and so I inherited from Label like:
Imports System.ComponentModel
Public Class LabelDisabled
Inherits Label
Sub New()
InitializeComponent()
Enabled = False
End Sub
[Code] .....
But this way, neither I can set the "real" Enabled property, I mean the backing field.
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Nov 12, 2011
i've an owned form that never raise the paint event, and so i can't make it rounded...
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Nov 11, 2011
during the development of my project, i've the need to raise the paint event of a form, to make it with rounded angle.The strange thing is that, when i use the invalidate comand on it, the repaint event (that sometimes doesn't go and i don't know why), doesn't make it like i need, that is, the dimension of the side is one instead of six pixel, and the angle are rounded, but the border is not visible.
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May 31, 2010
I have a user control that I have added a listbox to. I have added this control to a form and would like to use its click event.
Private Sub mycontrol1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles mycontrol1.Click
When I click on the control on the form it does nothing none of the code for this event gets triggered. If I click on the listbox inside the user control that .click event inside the control does trigger. How can I make the click event for the user control trigger when the control is clicked?
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Dec 1, 2009
I need to add vertical and horizonatl scrollbars to my windows form application. I have set the AutoScroll property of the form control to true and also set the AutoScrollMinSize property bigger than the form size. The scrollbars appear in the design view, but when I run my project they do not appear.
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Sep 3, 2009
I have the following code for a gradient form below. When I step through my code it seems to fire constantly. Does this mean that it fires constantly at run-time? If so, is there a way to stop it from firing constantly
Private Sub Form1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
Dim Mybrush As New System.Drawing.Drawing2D.LinearGradientBrush(Me.ClientRectangle, Color.LightSkyBlue, _
Color.Snow, Drawing2D.LinearGradientMode.Vertical)
e.Graphics.FillRectangle(Mybrush, Me.ClientRectangle)
End Sub
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Dec 9, 2011
I'm using VB in Visual Studio 2010
When I resize my form at run time (border set to sizeable) .Net automatically adds scroll bars.
I can pick the vertical scroll bar ok but on the horizontal scroll bar it always shows the resize cursor and so I cannot pick it.
Is there some way of controlling the zone within which the resize cursor is active or the active width of the border detection?
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Jun 1, 2009
How would I get the width of a Horizontal Scroll Bar? I'm not talking about the Hscroll width properties... I know the default width in vista is set to 17 pixels. I'd like to know if someone has changed their scroll bar width to a custom setting. Does that make any sense?
[Code]...
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Aug 30, 2010
Is the Horizonatal scroll bar an available tool in VB10. If so where is it?
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Oct 8, 2011
In VB 2010: Whenever I try to draw graphics based on a "mousedown", I get an extremely slow drawing reaction. Is that true?
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Apr 1, 2011
I'm coding in VB.Net 2010. What's the most efficient way to create a horizontal scroller (i.e., marquee)? I've found some dead threads and ways to do it in older versions of VB, but I'm not finding anything particularly recent....
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Apr 8, 2010
1.how can i resize my project's form1?i mean my form1 only has fixed size.when i'm trying to maximize the form(by click a square on the top right corner of the form) my form remains in the same size even the window has fullfill my screen.
2.how can i make my project to become an installer?
3.how to make exe file from the project?
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Jul 13, 2010
Since the map image is bigger than my screen resolution 1280 x 1024, a horizontal scroll bar is shown. I use Location x and y to place icons, but the problem is:placing an icon at location (0, 0) when the horizontal scroll bar is at left-most position is different from when the horizontal scroll bar is at right-most position...If I move scroll bar to x-axis(right) 10 thenplacing an icon at (0, 0), should be (0, 0) but it is placed at (10, 0).n this case, is there any different approach?
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May 17, 2010
I created a custom user control named "XYZ" and It is avaialble at the toolbox menu in the design mode and I can drag and drop it to a vb.net Windows form. What I really want is to dynamically to add this user control to the Windows form during the Windows form load event. Actually I want to add this user control to a "split container" named "sc_1" on the tab page named "tp_1" on a tab control named "tc_1" on a Windows form. What is teh vb code to add a user control to a Windows form. I am using vs 2005 and dotnetwork v2.0.
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