I have a really simple Dynamically add button. It works fine, but when I set the anchor property it does not show anymore.
Dim btn As New Button() With {.Text = "Cerrar", .Location = New Drawing.Point(8, 368)} 'Crea el boto
Me.Controls.Add(btn)
btn.BringToFront()
btn.Show()
btn.Anchor = AnchorStyles.Bottom Or AnchorStyles.Right
AddHandler btn.Click, AddressOf Me.Dispose 'Tanca la Pestanya al clicar btn
If I comment the "btn.anchor..." line it shows and works. When debbuging it shows that the property is set fine.
What's happening?
As you have sugested, I added the button to the form after the handler and anchor, nothing changed.
I though that maybe the anchor is moving down my butto, so i tried to locate it at (1,1)... And the anchor seems to be moving it.
Here it is without the anchor The button is the one outlined in red.
Now without comenting the anchor set As you can see the button have been moved down and left.
The only change in the code is that im setting the anchor to bottom on the second one.
There is nothing starting there, it just seems an arbritary position.
Related
I cannot display tooltips on the nodes of a treeview! I have a ToolTip1 control and I passed the ShowNodeToolTips property to True on the TreeView. I only want to display the text of the node that the mouse hovers in tooltips.
Unfortunately, I have no code start except this one:
Dim Noeud As TreeNode = Me.TreeView1.GetNodeAt(e.X, e.Y)
If Not (Noeud Is Nothing) Then
...
End if
Claude.
PS : I just gave it a try and it seems to me that as soon as the text of the Node exceeds the width of the TreeView, the tooltip appears!
Treeviews don't require a ToolTip control to have tips.
In the treeview control
TreeView1.ShowNodeToolTips = True
then in the nodes of the treeview set the
.ToolTipText
to what you want to display.
I want to insert a Panel (User Control) dynamically between two other control. Let say I have a PictureBox(Control) as the parent are there is an other control on the pictureBox.
I want to remove the other control from the picture box, add a panel(control) to the picture box and then set the older control to the new panel. For now I have this code :
If m_targetDisplay.MainDoubleBufferedPictureBox.HasChildren Then
For Each child As Control In m_targetDisplay.MainDoubleBufferedPictureBox.Controls
If (child.BackColor = Drawing.Color.Transparent) Then
Dim panel As SXFadeWrapperForGPU = New SXFadeWrapperForGPU()
panel.ClientSize = New Size(child.ClientSize.Width, child.ClientSize.Height)
panel.Location = New System.Drawing.Point(child.Location.X, child.Location.Y)
m_targetDisplay.MainDoubleBufferedPictureBox.Controls.Add(panel)
panel.Controls.Add(child)
m_targetDisplay.MainDoubleBufferedPictureBox.Controls.Remove(child)
AddHandler panel.Paint, AddressOf PanelPaintEvent
End If
Next
End If
My code is adding a background wrapper to the transparent color child in front of it. The thing is even if I remove the child before adding or after adding it back, I can never see it on the screen. Is there any particular thing that maybe the Remove does so the removed Child isn't usable again ?
You should change the child location to (0, 0), else it will still be relative to its position inside MainDoubleBufferedPictureBox, but now it's in the new panel. It could be there, just located outside the panel's boundary
If m_targetDisplay.MainDoubleBufferedPictureBox.HasChildren Then
For Each child As Control In m_targetDisplay.MainDoubleBufferedPictureBox.Controls
If (child.BackColor = Drawing.Color.Transparent) Then
Dim panel As SXFadeWrapperForGPU = New SXFadeWrapperForGPU()
panel.ClientSize = New Size(child.ClientSize.Width, child.ClientSize.Height)
panel.Location = New System.Drawing.Point(child.Location.X, child.Location.Y)
m_targetDisplay.MainDoubleBufferedPictureBox.Controls.Add(panel)
panel.Controls.Add(child)
child.Location = New System.Drawing.Point(0, 0) ' <--- this
m_targetDisplay.MainDoubleBufferedPictureBox.Controls.Remove(child)
AddHandler panel.Paint, AddressOf PanelPaintEvent
End If
Next
End If
I am trying to create a custom UI element: a panel, derived from the original panel, which is scrollable with special scrollbars (not the integrated ones) and has some other special abilities.
The actual problem is the scrolling. When I change the value of the custom scrollbar (e.g. scrolling), the panel-integrated scrollbars show up suddenly, although autoScroll = false.
Leading to the unintended state where both scrollbars are visible, the integrated and my custom one.
Private Sub ScrollB_EvValueChanged(NewVal As Integer) Handles ScrollB.EvValueChanged
Me.CleanPanel1.VerticalScroll.Value = NewVal
End Sub
How can I assign the new scrolling position (the new offset), determined by the custom scrollbar, to the panel without showing up panel-integrated scrollbars?
Sadly a panel (or usercontrol) with another panel on it and playing with the .Top and .Left properties of the inner panel to simulate scrolling is not an appropriate solution in my case.
Thank you for all your hints!
'I've been looking for methods of doing this all over, most of it is way more complicated than it needs to be, or you gotta write a whole dang program just to remove the bars to scroll. Anyhow, here's a quick, effective, neat method of doing this (since I was having trouble finding anything, I'll post it.
'e.delta detects a mouse wheel tick, if greater than 0, scroll up, less than 0 scroll down.
' the -91 part deducts some of the panel overhang (adjust as needed)
'I have buttons in this project that are 50 tall, so this scrolls perfectly for me.
'the nested if statements where there is no code (just else), tells the program to stop 'do nothing if a border is near by. The bottom of my panel, while scrolling, doesn't 'stop when the bottom of the panel (which is hanging off the bottom of the form quite 'some ways) reaches the bottom of the form, this can be adjusted by altering the 700 constant.
Private Sub DaddyPanel_MouseWheel(sender As Object, e As MouseEventArgs) Handles DaddyPanel.MouseWheel
If e.Delta < 0 Then
If (-DaddyPanel.Height - 91) > (DaddyPanel.Location.Y - 700) Then
Else
TextBox1.Text = DaddyPanel.Height & " " & DaddyPanel.Location.Y
DaddyPanel.Location = DaddyPanel.Location + New Point(0, -50)
End If
Else
If DaddyPanel.Location = New Point(0, 0) Then
Else
DaddyPanel.Location = DaddyPanel.Location + New Point(0, 50)
End If
End If
End Sub
I have design a form which contains one tab control and dynamically adding tab pages.
Problem: in each tab page, controls are not placed at correct place as given "LOcation" field while adding "Anchor property to RIGHT OR BOTTOM or eighter of it. If i remove anchor then it works fine.
But i need to use anchor to resolve resize of form should remain consistent for the controls.
Please suggest how i could resolve this issue and also anchor should remain there.
Below is the code:
Dim t As TabPage = New TabPage(titletext)
t.Name = IDValue
Dim w As New WebBrowser()
Dim b As New Button()
b.Text = "&Close"
w.Size = New Size(New Point(tcrViewer.Width - 3, tcrViewer.Height - (b.Height + 30)))
w.Anchor = AnchorStyles.Right Or AnchorStyles.Bottom
w.Location = New Point(0, 0)
w.Navigate(url)
t.Controls.Add(w)
b.Location = New Point(w.Width - (b.Width + 30), w.Size.Height + 3)
b.Anchor = AnchorStyles.Bottom Or AnchorStyles.Right
AddHandler b.Click, AddressOf btnReportClose_Click
t.Controls.Add(b)
tcrViewer.TabPages.Add(t)
tcrViewer.SelectedTab = t
tcrViewer.SelectedTab.Focus()
when execute the form, then, WEBEXPLORER CONTROL CUTS by form and it does not appear on "0,0" location and same thing happen for Button also. If i remove "Anchor" then its all fine as follow the location.
Please resolve
Thanks
The issue is resolved.
I have removed "DocK" property and added webexplorer into the panel.
Anchor is applied to "Bottom" and "Right" only and not to top, left. Then its work fine for Bottom,right anchor style.
I imagine this is probably an easy to answer question but for some reason I can't get it to work
Sub New(ByVal Sess As AudioSessionControl2)
S_Session = Sess
'Create the panel and position it.
S_Panel.BackColor = Color.AliceBlue
S_Panel.Width = 200
S_Panel.Height = 40
Dim Position As New Point(6, 19)
If G_AppSessions.Count > 0 Then
Position = Point.Add(G_AppSessions.Item(G_AppSessions.Count - 1).SessionPanel.Location, New Point(0, 45))
End If
S_Panel.Location = Position
'Create a label which has the name of the process
Dim S_PName As New Label
S_PName.Text = "Test"
S_PName.Dock = DockStyle.Left
S_Panel.Controls.Add(S_PName)
'Create a button to change volume
Dim S_Save As New Button()
S_Save.Text = "Save"
AddHandler S_Save.Click, AddressOf Save_Click
S_Save.Parent = S_Panel
S_Panel.Controls.Add(S_Save)
S_Volume.Parent = S_Panel
S_PName.Parent = S_Panel
MainForm.Controls.Add(S_Panel)
S_Panel.Parent = MainForm.gb_Applications
End Sub
The problem is that, the label will show because its docked, but the button won't. It will only show if its docked as well, and thats just not what I want. This is part of a class for creating a dynamic UI, where I can create a number of this class to create a bunch of panels for various things.
I don't see anywhere where you are setting the label or button position. You probably have them both at 0,0 and the label is on top of the button, obscuring it. Did you try setting the position of both the controls, making sure they don't overlap?