![]() Microsoft provides the following guidance for IHVs writing drivers:ĭriver developers are allowed to add additional drivers in the form of a filter driver or a new HID Client driver. The system provides support for horizontal/vertical wheels with smooth scrolling capabilities.The system prevents disable/enabling a keyboard.The system opens all keyboard and mouse collections for its exclusive use.Avoid using filter drivers unless critical. Vendors should create separate TLCs, that are vendor specific, to exchange vendor proprietary data between their hid client and the device.Vendors may optionally provide filter drivers in the HID stack to alter/enhance the functionality of these specific TLC. ![]() Vendor drivers are not required for keyboards and mice that are compliant with the supported HID Usages and top level collections.The HID mapper drivers create FDOs for keyboard and mouse, and load the class drivers.The keyboard or mouse hid client mapper drivers are loaded on the appropriate FDO. ![]() For example, a keyboard with an integrated mouse might have one collection for the standard keyboard controls and a different collection for the mouse. Complex HID devices (more than 1 TLC) are exposed as multiple PDOs created by HID class driver.
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