On Sep 11, 2007, at 10:42 AM, jean-michel T wrote:
My problem might come from my Structure WIN32_FIND_DATA described
on the msdn like the following:
typedef struct _WIN32_FIND_DATA {
DWORD dwFileAttributes;
FILETIME ftCreationTime;
FILETIME ftLastAccessTime;
FILETIME ftLastWriteTime;
DWORD nFileSizeHigh;
DWORD nFileSizeLow;
DWORD dwReserved0;
DWORD dwReserved1;
TCHAR cFileName[MAX_PATH];
TCHAR cAlternateFileName[14];
} WIN32_FIND_DATA,
*PWIN32_FIND_DATA,
*LPWIN32_FIND_DATA;
What I coded is :
For the Structure:
---- public static class WIN32_FIND_DATA extends Structure {
public int dwFileAttributes;
public long ftCreationTime;
public long ftLastAccessTime;
public long ftLastWriteTime;
Technically, FILETIME is a structure containing two 32-bit values,
but this definition should result in the same size/alignment.
public int nFileSizeHigh;
public int nFileSizeLow;
public int dwReserved0;
public int dwReserved1;
public String cFileName;
public String cAlternateFileName;
These last two are not instances of type "char *", but arrays of
TCHAR. While in pointers and arrays are interchangeable as function
arguments, they mean different things within a struct definition.
"char *" takes up the size of a pointer, while an array of "char"
takes up the size of the array. You will need to redefine them as
byte[] or char[] (depending on whether you're using ASCII or UNICODE)
and initialize them to the proper size, e.g.
public char[] cFileName = new char[MAX_PATH];
public char[] cAlternateFileName = new char[14];
Then you can use Native.toString(char[]) to convert the values back
to a Java String.
2 messages in net.java.dev.jna.usersRe: [jna-users] WIN32_FIND_DATA mapping
