I Should Probably Already Know This

[Steve Nelson]

In WIN32API.INC what does the "AS ANY" in RegisterRawInputDevices mean? I've tried
all kinds of things in that position (the array name, pointer to the array, etc.) but I keep getting "Parameter mismatches definition."

DECLARE FUNCTION RegisterRawInputDevices LIB "USER32.DLL" ALIAS "RegisterRawInputDevices" (pRawInputDevices AS ANY, BYVAL uiNumDevices AS DWORD, BYVAL cbSize AS DWORD) AS LONG

My code is:

GLOBAL xx AS RAWINPUTDEVICE
'  :
'  :
DIM xx(1 TO 1) AS GLOBAL RAWINPUTDEVICE
'  :
'  :
    CASE %WM_INITDIALOG           ' Initialization handler
      xx(1).usUsagePage=5 ' standard gamepad
      xx(1).usUsage=1
      xx(1).dwFlags=0
      xx(1).hwndTarget=%NULL
      szoxx???=SIZEOF(xx(1))

      IF RegisterRawInputDevices <what goes here?>, 1, szoxx??? THEN ' ...

TIA, (PowerBASIC is great; I use it every day to automate all kinds of things.)

[José Roca]

IF RegisterRawInputDevices <what goes here?>, 1, szoxx??? THEN ' ...

It goes a pointer to the first element of the array.

IF RegisterRawInputDevices xx(1), 1, szoxx??? THEN ' ...

[Steve Nelson]

Thx, tried that, it doesn't work. (mismatch message)

BTW, thanks very much José for all your excellent postings in this forum and your own.

[Steve Nelson]

The issue is unresolved at every VB site I found, too.

So maybe there is some problem in the heart of the operating system.

[Steve Nelson]

Works Fine Now; I was missing some parentheses

IF RegisterRawInputDevices(xx(1),1,szoxx???) THEN...

[Michael Mattias]

> but I keep getting "Parameter mismatches definition."

You should only get that if you try to use a literal or expression, as 'AS ANY' means "address of the variable passed in this position" and literals and expressions are not variables.

Any other variable is, well, a variable.