Article View: borland.public.jbuilder.java.language
Article #19917Native Methods and Borland C++
From: Philippe Thiran
Date: Tue, 25 Nov 1997 00:00
Date: Tue, 25 Nov 1997 00:00
65 lines
1972 bytes
1972 bytes
Hi,
I have a problem with native methods. I use Borland C++ version 4.52 to
compile my .c++ file into a .dll file. The problem is the probem
presented in the SUN JAVA tutorial (the Prompt.java problem).
In the header, I include the jni.h file and prompt.h (like in the SUN
tutorial). When I compile my C++ project, I have compilation errors in
my Prompt.h and also in my Prompt.c like this :
Prompt.h :
*********
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class Prompt */
#ifndef _Included_Prompt
#define _Included_Prompt
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: Prompt
* Method: getLine
* Signature: (Ljava/lang/String;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_Prompt_getLine
(JNIEnv *, jobject,
jstring);
<------------- Erreur Prompt.H : 'Java_Prompt_getLine' is not a
parameter in function __declspec
#ifdef __cplusplus
}
#endif
#endif
Prompt.c
*******
#include <stdio.h>
#include <jni.h>
#include "Prompt.h"
JNIEXPORT jstring JNICALL
Java_Prompt_getLine(JNIEnv *env, jobject obj, jstring prompt)
<-------------Errors : Declaration was expected in function __declspec;
Undefined symbol 'env' in function __declspec; Undefined symbol 'prompt'
in function __declspec
{
char buf[128];
const char *str = (*env)->GetStringUTFChars(env, prompt, 0);
printf("%s", str);
(*env)->ReleaseStringUTFChars(env, prompt, str);
scanf("%s", buf);
return (*env)->NewStringUTF(env, buf);
}
What is the error ????
Thanks.
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f74b3,bf469ddf9833b941 X-Google-Attributes: gidf74b3,public From: Philippe Thiran <pth@info.fundp.ac.be> Subject: Native Methods and Borland C++ Date: 1997/11/25 Message-ID: <347ADB55.7DFE8579@info.fundp.ac.be> X-Deja-AN: 292526233 X-Priority: 3 (Normal) Organization: University of Namur Newsgroups: borland.public.jbuilder.java.language