Windows 10: Unable to Retrieve the Correct Size of On-Screen Keyboard TabTip.exe Using Win32 APIs

Shaik Rizwan1 · Nov 29, 2024

Dear Microsoft Support,I am currently working on a C# application where I am trying to interact with the On-Screen Keyboard TabTip.exe using Win32 API calls, specifically FindWindow, GetWindowRect, and SetWindowPos. However, I am encountering an issue where the size of the keyboard window is always returned as 0x0 Width=0, Height=0 using GetWindowRect, even though I can see the keyboard on screen.Steps I’ve Taken:I start the On-Screen Keyboard TabTip.exe using Process.Start.I use FindWindow to locate the window by its class name IPTip_Main_Window.I attempt to retrieve the window size

:)

Eeshwar Kumar · Nov 29, 2024

Change size of virtual keyboard keys (Ease of Access)

Hi,

Thank you for posting your query in Microsoft Community.

To increase the size of the On-screen keyboard, follow the steps below:

Open on-screen keyboard.

Place the mouse cursor to the edges of the keyboard window.

It will change the cursor symbol to double arrow.

Click and drag the mouse to resize the keyboard window.

Hope this helps. Keep us posted on the status for further assistance.

[ Pete ] · Nov 29, 2024

How to Enable correction on Keyboard

settings->keyboard

Then tap on the keyboard language you're using. You'll then get a list of settings for that keyboard that should contain options for 'Suggest text' and 'Correct misspelt words'

Brink · Nov 29, 2024

Microsoft filling in divide between Win32 apps and new Windows APIs

Many new and sought-after Windows APIs and features such as BackgroundTasks, Notifications, LiveTiles, Share and more, are either not available or not easily callable from non-packaged Win32 applications. This is due to the programming model for UWP APIs that integrate with the system and have a dependency on the following concepts:

Identity – The need for package or application identity to identify the caller, and an identifier to scope data and resources.

Registration – The need for configuration of machine state during application deployment, which is required by the API and indexed by the package or application identity.

For packaged applications, Identity declared in the Appxmanifest.xml, and Registration is handled by the MSIX deployment pipeline based on the information in the AppxManifest.xml. This allows a simplified calling pattern for UWP APIs where the application code just uses an API. Compare this to a typical Win32 API that requires a register-use-unregister pattern for managing a callback.

We’ve heard your feedback, and in response we’re filling in the divide between Win32 apps and new Windows APIs & features so that you can take advantage of these new APIs & features and enhance your applications. As of Windows Build 10.0.19000.0 we’re introducing the following new AppModel concepts to provide your Win32 app with deeper integration into the OS:

Sparse Package registration
Signed MSIX packages can be installed on Windows today but all content referenced in the package’s Appxmanifest.xml must be present inside the package. A ‘Sparse’ Package contains an AppxManifest.xml but unlike a regular/full package, the manifest can reference files outside its package in a predetermined ‘external location’. This allows applications that are not yet able to adopt complete MSIX packaging to gain Identity, configure state (Registration) as required by UWP APIs and then take advantage of these APIs.

Package ‘External Location’
To support a Sparse Package, a package definition now has a new <allowExternalContent> element. This is what allows your package AppxManifest.xml to reference content outside its package, in a specific location on disk. For example, if your existing Win32 app installs content in C:\Program Files\MyWin32App\ , you can create a Sparse Package that declares the <allowExternalContent> element and during app installation or first run of your app, you can register the Sparse Package and declare C:\Program Files\MyWin32App\ as the external location your app will be using. This way you can continue deploying all your other app artifacts in the locations you do today while taking advantage of the Sparse Package.

Win32 type RuntimeBehavior
To help with compatibility of your existing Win32 app when using a Sparse Package, the app can register to have its application process be run like a non-packaged Win32 app as much as possible. This differs from a fully packaged Win32 app in that it is not subject to filesystem + registry virtualization, lifetime management by the system and other runtime attributes of fully packaged applications. The main runtime similarity between such an app and a fully packaged app is the presence of app/package identity in the running process.

Activation via CreateProcess
The activation path for UWP applications today ensures the app has PackageIdentity in its process token. This is used by UWP APIs to identify the caller and refer to later – either to perform a callback or to look up state that was configured during deployment. Because of this requirement, calling CreateProcess() on a UWP exe will fail as the CreateProcess() pipeline was not enlightened about Identity. In order to support Sparse Packages with an External Location, we leverage the classic Win32 application.manifest to provide Identity in CreateProcess() scenarios.

At their core, these features are about providing a foundation for non-packaged Win32 processes to use our latest APIs and features.

*Please note that these are still new and somewhat advanced development features that do not yet have full Visual Studio integration i.e. there are still some gaps in the end to end authoring experience such as having to create a Sparse Package outside of Visual Studio...
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Read more: Identity, Registration and Activation of Non-packaged Win32 Apps - Windows Developer Blog

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Windows 10: Unable to Retrieve the Correct Size of On-Screen Keyboard TabTip.exe Using Win32 APIs

Unable to Retrieve the Correct Size of On-Screen Keyboard TabTip.exe Using Win32 APIs

Unable to Retrieve the Correct Size of On-Screen Keyboard TabTip.exe Using Win32 APIs

Unable to Retrieve the Correct Size of On-Screen Keyboard TabTip.exe Using Win32 APIs

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