The page I am working on has a javascript function executed to print parts of the page. For some reason, printing in Safari, causes the window to somehow update. I say somehow, because it does not really refresh as in reload the page, but rather it starts the "rendering" of the page from start, i.e. scroll to top, flash animations start from 0, and so forth. The effect is reproduced by this fiddle: http://jsfiddle.net/fYmnB/ Clicking the print button and finishing or cancelling a print in Safari causes the screen to "go white" for a sec, which in my real website manifests itself as something "like" a reload. While running print button with, let's say, Firefox, just opens and closes the print dialogue without affecting the fiddle page in any way. Is there something with my way of calling the browsers print method that causes this, or how can it be explained - and preferably, avoided? P.S.: On my real site the same occurs with Chrome. In the ex
N.B. This is only valid for Java running on Windows system:
ReplyDeleteUsing JNA, you can call Win32 Kernel32's GetVolumeInformation() to retrieve lpFileSystemNameBuffer parameter which receives the name of the file system, for example, the FAT file system or the NTFS file system http://msdn.microsoft.com/en-us/library/windows/desktop/aa364993(v=vs.85).aspx
Kernel32.java:
package filesystem;
import java.util.HashMap;
import java.util.Map;
import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.platform.win32.WinDef.DWORD;
import com.sun.jna.ptr.IntByReference;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIFunctionMapper;
import com.sun.jna.win32.W32APITypeMapper;
public interface Kernel32 extends StdCallLibrary {
final static Map<String, Object> WIN32API_OPTIONS = new HashMap<String, Object>() {
private static final long serialVersionUID = 1L;
{
put(Library.OPTION_FUNCTION_MAPPER, W32APIFunctionMapper.UNICODE);
put(Library.OPTION_TYPE_MAPPER, W32APITypeMapper.UNICODE);
}
};
public Kernel32 INSTANCE = (Kernel32) Native.loadLibrary("Kernel32", Kernel32.class, WIN32API_OPTIONS);
/*
BOOL WINAPI GetVolumeInformation(
__in_opt LPCTSTR lpRootPathName,
__out LPTSTR lpVolumeNameBuffer,
__in DWORD nVolumeNameSize,
__out_opt LPDWORD lpVolumeSerialNumber,
__out_opt LPDWORD lpMaximumComponentLength,
__out_opt LPDWORD lpFileSystemFlags,
__out LPTSTR lpFileSystemNameBuffer,
__in DWORD nFileSystemNameSize
);
*/
public boolean GetVolumeInformation(
String lpRootPathName,
char[] lpVolumeNameBuffer,
DWORD nVolumeNameSize,
IntByReference lpVolumeSerialNumber,
IntByReference lpMaximumComponentLength,
IntByReference lpFileSystemFlags,
char[] lpFileSystemNameBuffer,
DWORD nFileSystemNameSize
);
public int GetLastError();
}
VolumeInformation.java:
package filesystem;
import ping.Kernel32;
import com.sun.jna.platform.win32.WinDef.DWORD;
import com.sun.jna.ptr.IntByReference;
public class VolumeInformation {
static void getFileSystemName(){
char[] lpVolumeNameBuffer = new char[256];
DWORD nVolumeNameSize = new DWORD(256);
IntByReference lpVolumeSerialNumber = new IntByReference();
IntByReference lpMaximumComponentLength = new IntByReference();
IntByReference lpFileSystemFlags = new IntByReference();
char[] lpFileSystemNameBuffer = new char[256];
DWORD nFileSystemNameSize = new DWORD(256);
lpVolumeSerialNumber.setValue(0);
lpMaximumComponentLength.setValue(256);
lpFileSystemFlags.setValue(0);
Kernel32.INSTANCE.GetVolumeInformation(
"C:\\",
lpVolumeNameBuffer,
nVolumeNameSize,
lpVolumeSerialNumber,
lpMaximumComponentLength,
lpFileSystemFlags,
lpFileSystemNameBuffer,
nFileSystemNameSize);
System.out.println("Last error: "+Kernel32.INSTANCE.GetLastError()+"\n\n");
String fs = new String(lpFileSystemNameBuffer);
System.out.println(fs.trim());
}
/**
* @param args
*/
public static void main(String[] args) {
getFileSystemName();
}
}
What version of Java are you using?
ReplyDeleteIf Java 7 - Check out this API - http://docs.oracle.com/javase/7/docs/api/java/nio/file/FileSystems.html
Outside of that I know System.getProperty and Runtime have methods to grab information on the disk being used but nothing that specifically calls out the File System type (NTFS, FAT32, etc.)