Poor support for custom DPI scaling in Windows 7 - Windows 10.
There no null checking, and there is dirty hacks:

CASE 1: RadPageViewElement
 public override void DpiScaleChanged(SizeF scaleFactor)
        {
            base.DpiScaleChanged(scaleFactor);

            if (this.Owner != null && this.Owner.Pages.Count > 1)
            {
                this.Owner.SuspendEvents();

                if (this.Owner.SelectedPage == this.Owner.Pages[0])
                {
                    this.Owner.SelectedPage = this.Owner.Pages[1]; // NO NULL CHECKING
                    this.Owner.SelectedPage = this.Owner.Pages[0]; // DIRTY HACK: users can have their own processing OnSelectedPage, which is unexpected here!
                }
                else
                {
                    RadPageViewPage page = this.Owner.SelectedPage;
                    this.Owner.SelectedPage = this.Owner.Pages[0];
                    this.Owner.SelectedPage = page;
                }

CASE 2:
 public partial class RadForm1 : Telerik.WinControls.UI.RadForm
    {
        public RadForm1()
        {
            InitializeComponent();
            radWizard1.Pages.Add(new WizardPage()); // when user has 100% Dpi, this code works normally. But if user has custom scale DPI (e.g. 101%), user received System.NullReferenceException: 'Object reference not set to an instance of an object.' (because because again there is no verification for ContentArea = null)...
        }
    }

Please improve the work with custom DPI scaling!

I have a winforms controls product with specific license of 2017.1.221.40 and I need to know what themes are available for this specific version and how to implement it, since I need to know if I can apply the them "VisualStudio2012DarkTheme" and how do it.

I'd like to represent, update and delete WinForms Scheduler events in a Kendo MVC Web application and visa versa. Some kind of data converter would be appreciated.

Currently the only way to have this work on a windows 10 machine with vs2017 is to install a depreciated version of Build tools 2015. Which causes some conflicts with vs2017 backwards compatibility.

I have literally for weeks now, tried to find a single theme that works properly with High Dpi scaling, including the new material themes.  None of them work, I mean not even to the point that, it's just a few quirks.  I can't deploy applications, without extensive code to modify the way the controls look. 

My request, is take something like material (preferably with a professional color scheme), or telerik touch, make the need adjustments to make them HiDpi, and then EXTENSIVELY test it, to insure it works. 

Use attached project to reproduce. 

Workaround:
Use attached theme.

Implement a facility to convert a RadDocument to a RadPrintDocument (or something that can be handed to a RadPrintPreview) to avoid having to load up a RadRichTextEditor just to print a code-generated document.

This request is for control similar to RadImageEditor in ASP.NET AJAX suite: http://demos.telerik.com/aspnet-ajax/imageeditor/examples/overview/defaultcs.aspx

Workaround: use a bigger image 
Me.radCheckBox1.ButtonElement.CheckMarkPrimitive.CheckElement.ShouldPaint = False
    Dim dpi As Point = NativeMethods.GetSystemDpi()
    Dim scale As Integer = dpi.X
    If scale >= 300 Then
        Me.radCheckBox1.ButtonElement.CheckMarkPrimitive.Image = Image.FromFile("..\..\check-mark.png")
    ElseIf scale >= 200 Then
        '...
    Else
        '...
    End If

Similar to Material Themes Blending (https://docs.telerik.com/devtools/winforms/tools/visual-style-builder/working-with-visual-style-builder/material-themes-blending) provide an easy way to change the palette for the Fluent themes. 

Hello,
i have a suggestion for WinControls, please add a comfortable language Support
without methode override. Please create a property field Pull-Down Menü in every Control
where Developer can change the language of the control in e.g. englisch, spain, german and so on. The translation could be done very quickly with the help of the Telerik community and their experience.

How to reproduce: check the attached project and compare the font size of the two labels. Also when the form is moved from a screen with HDPI to a standard screen with DPI=96 the font does change.

To reproduce:
- Open Theme Viewer, go ListView and sort it.
- Change the theme to Fluent. 

 Workaround:
- Set the visibility of the item in the theme (see attached). 
 
 

Do you have a version which can support Microsoft .NET Framework 2.0? I run a sample application TelerikUIforWinFormsDemoAppsHub\BugTracker asking for Microsoft .NET Framework 4.0.

We had some PC still running Microsoft .NET Framework 2.0.

Should be able to generate industry-standard barcode formats.

We load a default theme and modify it in code. This works great and allows for great flexibility.

The problem is that this adds a pretty substantial overhead to the application start.
It would be great to have a way to save the modified theme as a file so if there are no changes to be made since the last start, we could just load this files instead of executing all the customizing code.

Benefits from this approach:
* Multiple developers can change the code at the same time without any conflicts.
* The theme can be updated with every new Telerik version without any work on our side.
* We can use different base themes and apply the same customizing without the hassle of maintaining multiple files and the danger of getting out of sync.

The ImageList property is visible in the Properties section of VisualStudio for RadTextBox, RadTextBoxControl etc.

ADD. New control which allows the users to play videos with different formats