The mapper driver maps the I/O requests and data protocols of one to the other. Windows provides system- supplied HID mapper drivers for HID keyboard, and HID mice devices. Architecture and overview. The following figure illustrates the system- supplied driver stacks for USB keyboard and mouse/touchpad devices. The figure above includes the following components: KBDHID. Converts HID usages into scancodes to interface with the existing keyboard class driver. MOUHID. sys в. Converts HID usages into mouse commands (X/Y, buttons, wheel) to interface with the existing keyboard class driver.
KBDCLASS. sys в. HIDI2. C)As a filter between HIDCLASS and HID Transport minidriver. Function Drivers: Alternatively vendors can create a function driver (instead of a filter driver) but only for vendor specific HID PDOs (with a user mode service if necessary). Function drivers are allowed in the following scenarios: Only load on the specific vendorв. For example, a keyboard layout specifies the language, keyboard type and version, modifiers, scan codes, and so on. See the following for information about keyboard layouts: Keyboard header file, kdb. Windows Driver Development Kit (DDK), which documents general information about keyboard layouts.
Sample keyboard layouts in the MSDN Code Gallery. To visualize the layout of a specific keyboard, please review to the в.
4.292.0\sw\host\ drivers \becndis\inbox\WS10\sandbox\Debug Р—Р. A post of how to do keyboard hooking in kernel; Author: GГ.