Joystick Driver Entry Point

A joystick driver must include the standard DriverProc entry point function. This function handles standard and joystick-specific messages sent by the operating system.

DriverProc has the following prototype:

LRESULT WINAPI DriverProc(DWORD dwDriverID,
    HANDLE hDriver, 
    UINT uMsg, 
    LPARAM lParam1, 
    LPARAM  lParam2)

Joystick device drivers uses the following definitions for the parameters of this entry point:

Parameter	Definition
dwDriverID	Contains the driver identifier created by the device driver.
hDriver	Contains a handle to the device driver
uMsg	Contains the joystick message
lParam1	Contains message-dependent data.
lParam2	Contains message-dependent data.

For more information on the DriverProc entry point and the system messages it handles see the Microsoft® Win32™ Programmer's Reference.