Win32 API calling by Code Interface Node

[Steve]

Hi all,

I wish to call a Win32 API function by using the code interface node.
However, I don't know the data types in LabVIEW corresponding to the "HANDLE
*" in Visual C++.

Here's the function I wish to call:

BOOL bOpenDriver (HANDLE * phDeviceHandle, PCHAR devname) {
*phDeviceHandle = CreateFile(devname,
GENERIC_WRITE,
FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);

if (*phDeviceHandle == INVALID_HANDLE_VALUE) {
return (FALSE);
} else {
return (TRUE);
}

}

Thank you in advance.
JJ

[tst]

If this is really a Windows API function, then the handle can most likely be treated as an I32.

Note that you can't actually do anything with the handle other than passing it to other functions.

If you search this site for "LabVIEW" and "DLL" you should find some resources about working with DLLs and Win32 API DLLs.