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Normal Topic Embedded virtual keyboard changes focus (Read 1860 times)
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Embedded virtual keyboard changes focus
Jun 20th, 2020 at 10:42pm
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I have a virtual keyboard as an embedded component in WPF. Whenever I click on a key, it changes the focus to the program that started it and sends the keystroke there. If run from Visual Studio, that gains focus; if run from Explorer, that gets it.

Here's the XAML, which sets all the properties. Any ideas?

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                       <vk:VirtualKeyboard
                            Name="Vk"
                            TemplateLayout="{Binding Path=TemplateLayout, UpdateSourceTrigger=PropertyChanged}"
                            LayoutUpdated="{tools:MethodBinding Vk_LayoutUpdated}"
                            Height="{Binding Value, ElementName=VkSlider}"
                            Width="{Binding VkWidth, UpdateSourceTrigger=PropertyChanged}"
                            IsStandAlone="False"
                            Focusable="False"
                            >
                            <vk:VirtualKeyboard.FontFamily>
                                Gotham Medium,
                                Calibri,
                                Courier New
                            </vk:VirtualKeyboard.FontFamily>
                        </vk:VirtualKeyboard>
  
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Slavcho
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Re: Embedded virtual keyboard changes focus
Reply #1 - Jun 22nd, 2020 at 4:18pm
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Try comparing your setup with CommonAPI sample project, it lets us type immediately into sample's textbox regardless of where started from. Also check this part from 4.5 release (https://mindfusion.eu/Forum/YaBB.pl?num=1541429322) -

Quote:
Pressing a key no longer activates last target window, which was necessary when keyboard is used as a popup inside application but led to activation flickering. Set the new PreventActivation property instead to disable the keyboard's popup window from activating altogether.
  
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Re: Embedded virtual keyboard changes focus
Reply #2 - Jun 23rd, 2020 at 12:23pm
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That worked, thanks.

I was using virtual keyboard v. 4.4.2 and had to update to 4.5. For anyone reading this, that turned out to be kind of hard. After considerable thrashing about, I finally uninstalled virtual keyboard completely and then installed v. 4.5. Then I deleted the .vs file in the program solution root and deleted all the bin and debug folders. After that it worked.
  
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