DefRawInputProc function (winuser.h)

Unlike DefWindowProcA and DefWindowProcW, this function doesn't do any processing.

DefRawInputProc only checks whether cbSizeHeader's value corresponds to the expected size of RAWINPUTHEADER.

Syntax

LRESULT DefRawInputProc(
  [in] PRAWINPUT *paRawInput,
  [in] INT       nInput,
  [in] UINT      cbSizeHeader
);

[in] paRawInput

Type: PRAWINPUT*

Ignored.

[in] nInput

Type: INT

Ignored.

[in] cbSizeHeader

Type: UINT

The size, in bytes, of the RAWINPUTHEADER structure.

Type: LRESULT

If successful, the function returns 0. Otherwise it returns -1.

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Target Platform	Windows
Header	winuser.h (include Windows.h)
Library	User32.lib
DLL	User32.dll
API set	ext-ms-win-ntuser-rawinput-l1-1-0 (introduced in Windows 10, version 10.0.14393)