How can I implement an on-screen keyboard feature for my game running on Steam Deck?

Implementing an On-Screen Keyboard for Steam Deck

Developing an on-screen keyboard feature for games running on the Steam Deck requires understanding both the Steamworks SDK and the Steam Deck’s input methods. Follow these steps to implement this feature effectively:

1. Integrate Steamworks SDK

First, ensure that your game is integrated with the Steamworks SDK, which provides necessary tools for handling input and Steam Deck features. You can download the SDK from the Steamworks site.

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2. Utilize the SteamUtils Interface

The SteamUtils() interface offers functions for interacting with the Steam overlay and other utilities. Use ShowFloatingGamepadTextInput() to trigger the on-screen keyboard. This method requires you to provide the input mode (e.g., k_EFloatingGamepadTextInputModeModeSingleLine), text field type, and initial text content:

bool result = SteamUtils()->ShowFloatingGamepadTextInput( k_EFloatingGamepadTextInputModeModeSingleLine, 0, 0, 256, "" );

Monitor the success of this function call by checking the result boolean.

3. Implement Input Handlers

• Trackpad Input: Support Steam Deck trackpad input by configuring your input handlers to manage dual-touch interactions, as noted in the passage about trackpad responsiveness.
• Gamepad Controls: Use gamepad input to trigger the keyboard. Ensure that pressing the right button combination (like STEAM+X in desktop mode) activates the on-screen keyboard.

4. Address Common Issues

Be prepared to troubleshoot common issues such as the on-screen keyboard not appearing. Ensure that the Steam Overlay is enabled and configured correctly, and refer to community discussions and documentation for solutions.

5. Test Extensively

After implementation, conduct thorough testing in various modes on the Steam Deck. This includes game mode and desktop mode, ensuring that the on-screen keyboard appears as expected and functions are stable.