How can I temporarily disable listview selection rectangle, so when someone clicks the listview and holds the button down & moves the mouse, the rectangle is not shown? And how do I enable it again after that? (VB.NET)
You can set the enabled property to false, then back to true again to enable the selections. It will display a a gray background when it is disabled.
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I'm trying to use a transparent panel. I want add a panel to the center of a form. This panel should result in darkness.
How can I add a transparent panel to my form without a background picture?
1)Set the background image of the form to the picture you want as a background and set the background image layout to 'stretch' as shown below.
2)Add a panel control.
3)Size the panel control to cover most of the form.
4)Add the code below to the form load event.
Panel1.BackColor = Color.FromArgb(185, 0, 0, 0)
5)Set form border style to 'none'
6)Add a button to the panel
7)Set the buttons Flat Style, Border Size and Forecolor as shown below.
8)Add the following code to the form load event.
Button1.BackColor = Color.FromArgb(75, 240, 240, 240)
9)Compile and there you go
Note:You can use the same method for other controls on the form but remember that it will only be the background image of the form that shows in any control. In other words, you can't stack controls on top of each other and see the bottom control because the background of the foremost control will be the background image of the form not the control immediately behind it.
I have set a Panel to AutoScroll = True.
I host a button in this panel.
When I set the button to a new location outside the panel's visible area...
.Location = New Point(2000, 0)
... this doesn't make the scrollbars appear.
How could I force the panel to invalidate / check again if the scrollbars should be shown?
I got it:
I need to set the button's parent to something else, then add it to the panel again which raises the ControlAdded event.
Using properties of "label" not able to set the backcolor as transparent ... when i select the color transparent from the option which is showing some color as backcolor, if transparent works properly must show background instead of some colors. please help
If you add a control at design time when setting the background to transparent it 'displays' the background of the form not the control on which it was placed unless that control is a container such as a panel.
2 options:
1 place the label on a panel and the label then displays the panel background (which can be a picture if that is what you are trying to do)
2 place the label programatically i.e.
dim Label1 As New Label
Control.Controls.Add(Label1)
Label1.BackColor = Color.Transparent
I am developing a Windows Application in VB.Net. In that, there is one case where there is one form, and in that form there is a Panel, and within the Panel there is a rich text box.
So my requirement is to get a scrollbar in the Panel. So when the user does scroll on the panel, the rich text box can scroll accordingly like MS Office functionality..
Can any one give me an idea how to do it?
Set Panel.AutoScroll = True and scrollbars will automatically appear whenever any controls in the panel fall outside its boundaries.
Set the .Dock property to FILL and the .WordWrap property to FALSE for the richtextbox.
Also set the Panel's .Dock property to FILL.
In order to use panel autoscroll property I do that:
panel.AutoScroll = true
panel.VerticalScroll.Visible = False or panel.HorizontalScroll.Visible = False
In order to know the dimensions of the scroolbars use
SystemInformation.HorizontalScrollBarHeight
SystemInformation.VerticalScrollBarWidth
So you can change the dimension of the panel when the scroolbar is shown.
I'm trying to make a thumbnail toolbar button (TTB from now on)visible when the it is clicked. I know how to do stuff when it is clicked, AddHandler etc. But if I tell it TTB.visible=false then it doesn't become invisible. If I put TTB.enabled = False it will be disabled, so it's only the visible that isn't working.
Also I put a button on my form (not a TTB) and when that is click wrote, TTB.visible = false and that didn't work, so there is no way to make it invisible.
Try set TTB.visible=true after you Add it into toolbar button list.