What is RIDI_PREPARSEDDATA in GetRawInputDeviceInfo?

Question

The Windows API function GetRawInputDeviceInfo has a parameter uiCommand. One of the following: RIDI_PREPARSEDDATA. It says: "pData indicates previously analyzed data."

I do not get what I previously analyzed the data to which they refer. Is this the data that was last sent using WM_INPUT? Or is it data that was returned by any of the functions? Or something different? Also in what format is this data?

Answer 1

, . HID .

MSDN

Answer 2

" ?"

GetRawInputDeviceInfo(), RIDI_PREPARSEDDATA. , XBOX. , , , .

getting device info...
Preparing 5 device lists...
Getting 5 devices...
index: type|    location
0: HID| 0x01FB035F
1: Keyboard|    0x0001003F
2: Keyboard|    0x000B003D
3: Mouse|   0x0001003B
4: Mouse|   0x000B0039

? __

Pointer: 0x01FB035F
Type: HID
Name: \\?\HID#VID_0E6F&PID_0401&IG_00#7&2c93b906&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
Vendor ID: 0x00000e6f
Product ID: 0x00000401
Version Number: 0x00000000
Usage Page: 0x0001
Usage: 0x0005

DATA: (940 bytes)
H(0x48) i(0x69) d(0x64) P(0x50)
 (0x20) K(0x4b) D(0x44) R(0x52)
05 00 01 00
00 00 00 00
00 00 07 00
07 00 0f 00
07 00 00 00
07 00 00 00
07 00 00 00
07 00 00 00
d8 02 04 00
01 00 00 00
10 00 01 00
03 00 10 00
02 00 00 00
05 00 01 00
01 00 00 00
08 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
1(0x31) 00 1(0x31) 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
ff ff ff ff
00 00 00 00
ff ff ff ff
00 00 00 00
00 00 00 00
01 00 00 00
10 00 01 00
01 00 10 00
02 00 00 00
03 00 01 00
01 00 00 00
08 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
0(0x30) 00 0(0x30) 00
00 00 00 00
00 00 00 00
01 00 01 00
00 00 00 00
00 00 00 00
ff ff ff ff
00 00 00 00
ff ff ff ff
00 00 00 00
00 00 00 00
01 00 00 00
10 00 01 00
07 00 10 00
02 00 00 00
09 00 02 00
01 00 00 00
08 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
4(0x34) 00 4(0x34) 00
00 00 00 00
00 00 00 00
02 00 02 00
00 00 00 00
00 00 00 00
ff ff ff ff
00 00 00 00
ff ff ff ff
00 00 00 00
00 00 00 00
01 00 00 00
10 00 01 00
05 00 10 00
02 00 00 00
07 00 02 00
01 00 00 00
08 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
3(0x33) 00 3(0x33) 00
00 00 00 00
00 00 00 00
03 00 03 00
00 00 00 00
00 00 00 00
ff ff ff ff
00 00 00 00
ff ff ff ff
00 00 00 00
00 00 00 00
01 00 00 00
10 00 01 00
09 00 10 00
02 00 00 00
0b 00 03 00
01 00 00 00
08 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
2(0x32) 00 2(0x32) 00
00 00 00 00
00 00 00 00
04 00 04 00
00 00 00 00
00 00 00 00
ff ff ff ff
00 00 00 00
ff ff ff ff
00 00 00 00
00 00 00 00
09 00 00 00
01 00 0a 00
0b 00 0a 00
02 00 00 00
0d 00 00 00
01 00 05 00
1c 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
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00 00 00 00
01 00 0a 00
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05 00 0e 00
00 00 00 00
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00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
01 00 00 02
04 00 01 00
0c 00 04 00
B(0x42) 00 00 00
0d 00 00 00
01 00 05 00
08 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
9(0x39) 00 9(0x39) 00
00 00 00 00
00 00 00 00
0f 00 0f 00
01 00 00 00
01 00 00 00
08 00 00 00
00 00 00 00
;(0x3b) 10 00 00
0e 00 00 00
00 00 00 00
05 00 01 00
00 00 03 00
00 00 03 00
01 00 00 00
00 00 01 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 01 00
00 00 00 00
01 00 00 00
00 00 00 00
00 00 01 00
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02 00 00 00
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00 00 00 00
00 00 00 00
00 00 00 00
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00 00 00 00
00 00 00 00
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00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
end of data.Press any key to continue . . . 

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