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Message:
Java Native Interface (Problem)
Posted by Atif Nazar Ali on December 04, 2000 at 7:18 AM
Hello
Im trying to call the MessageBox method which is defined in the USER32.dll library. The Visual J++ is running it properly but the Sun JDK is giving the problem even it is compiling it correcly Please check the following code First i am writing the output then i am wrting the code.
EXCEPTION
----------------------------------------------------------
Library Loaded
java.lang.UnsatisfiedLinkError: MessageBox
at NativeMFCMsg.MessageBox(Native Method)
at NativeMFCMsg.main(NativeMFCMsg.java:24)
Error
java.lang.UnsatisfiedLinkError: MessageBox
-------------------------------------------------------------
CODE
______________________________________________________________ import java.io.*; public class NativeMFCMsg
{
static {
try {
System.loadLibrary("user32");
System.out.println("Library Loaded");
}
catch(Exception e)
{
e.printStackTrace();
}
}
public native int MessageBox( int hWnd,String lpText,String lpCaption,int uType );
public static void main(String[] args)
{ try { new NativeMFCMsg().MessageBox(0,"Hello","Caption",0); }
catch(UnsatisfiedLinkError ex)
{
ex.printStackTrace();
System.out.println("Error " + "\n" + ex.toString());
System.exit(1);
}
} }
_________________________________________________________________ Please I am waiting Reply From You................. Thanks In Advance.
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