The operating system sends the DBT_DEVICETYPESPECIFIC device message when a device-specific event occurs.
To send the DBT_DEVICETYPESPECIFIC device message, the operating system sends the WM_DEVICECHANGE message with wParam set to DBT_DEVICETYPESPECIFIC and lParam set as described in the following.
dwData = (DWORD) lParam;
Return TRUE.
DEV_BROADCAST_HDR, WM_DEVICECHANGE
file: /Techref/os/win/api/win32/mess/src/msg03_26.htm, 1KB, , updated: 2000/4/7 11:19, local time: 2024/11/6 19:47,
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