Hi,
our company is slowly rolling out high-DPI laptops to our users. On such devices, Windows automatically enables DPI scaling, using a value of 125% or 150%, depending on the screen's resolution. In combination with an external (unscaled) monitor, this causes our application, to appear blurry on the scaled screen.
Windows has built-in functionality to reduce the blurring, however, this only works on the main screen. If you connect a secondary screen and set that as your main screen, the application will always appear blurry on the laptop screen.
My understanding of the topic is that WPF is DPI aware - but on the system level. So it does not cope well with monitors that have different DPI settings. However, I found a tutorial on Microsoft Docs (https://docs.microsoft.com/en-gb/windows/win32/hidpi/declaring-managed-apps-dpi-aware?redirectedfrom=MSDN), hinting that it is possible to make WPF windows per-monitor DPI aware. Unfortunately, this workaround requires you to inherit your window class from their utility class.
Since all of our windows already inherit from RadWindow, I have no chance to include this without copying either their base class or RadWindow. Having RadWindow support per-monitor DPI awareness would be a great feature to have. Or is there already a way to support this?
Best Regards,
Simon Müller
Hofmann Fördertechnik GmbH
PS: Why does the first feature form in the feature request workflow (the one, where it first searches for similar requests) not let me select the control/area I am searching for like the one for private tickets? I almost submitted this request for the Area "All (Multiple Controls)" because of that.
The default dialogs for the WPF RadWindow (Prompt, Alert, Confirm) do not seem to allow sizing of the content of the message. I have tried imbedding controls to set width and maxwidth, but I need to use a MaxWidth to prevent horizontal scrollbars. Ideally a Maxwidth parameter would be available allowing longer text message to spread out. The code below works, but I'm restricted to a narrow dialog. Dim Scroller As New ScrollViewer Dim TextBlk As New Controls.TextBlock() With Scroller .HorizontalScrollBarVisibility = ScrollBarVisibility.Disabled .VerticalScrollBarVisibility = ScrollBarVisibility.Auto If Owner IsNot Nothing Then .MaxHeight = (WPFScreen.GetScreenFromElement(Owner).WorkingArea.Height - 100) 'Do not use entire height Else .MaxHeight = (WPFScreen.Primary.WorkingArea.Height - 300) 'Do not use entire height End If With TextBlk .Margin = New Thickness(10) .TextWrapping = TextWrapping.Wrap .Text = Message 'We seem to be stuck with a fixed width available for our text. 'If this is increased a horizontal scrollbar appears. .MaxWidth = 230 End With .Content = TextBlk 'Put textblock in scroller End With Dim RadDialog As New DialogParameters With RadDialog .Content = Scroller .DefaultPromptResultValue = DefaultValue 'Default prompt result .DialogStartupLocation = DialogStartupLocation .Header = Header .IconContent = IconContent If ThemeName.ToLower <> "expression_dark" Then ' *NoLoc* .ModalBackground = m_SPIBackgroundBrush End If .Owner = Owner .Closed = New EventHandler(Of WindowClosedEventArgs)(AddressOf OnPromptClosed) 'Reference handler for response '.ContentStyle '.WindowStyle End With RadWindow.Prompt(RadDialog)