[問題] JNI傳遞參數問題(Pointer)

[gorocky (哇沙咪)]

JNI和JNA可以同時運行嗎?
範例

==Java==
public class Test{
        public static void main(String[] args) {

                ...
                com.sun.jna.Pointer Image1=Ins.cvLoadImage("dog.jpg", 1);
                Test t=new Test();
                BufferedImage bufimg=t.ToBufferImage(Image1);
        }
        public native BufferedImage ToBufferImage(com.sun.jna.Pointer img);
        static{
                System.loadLibrary("opencv_core243");
                System.loadLibrary("opencv_highgui243");
                System.loadLibrary("opencv_imgproc243");
                System.loadLibrary("t");//透過GCC產生的DLL檔
        }
}

==C==

JNIEXPORT jobject JNICALL Java_Test_ToBufferImage
  (JNIEnv *env, jobject obj, IplImage *img)
{
        CvSize size = cvGetSize(img);
        ...
        jobject bufferedImage=....
        ...
        return bufferedImage;

}

問題:
不知怎麼讓Java傳遞com.sun.jna.Pointer 到C當中?
如果JNI和JNA不能同時運行的話，試過用Jlong的方式，但也失效?
不知哪出問題?
==Java==
BufferedImage bufimg=t.ToBufferImage(Image1.getLong(0));
public native BufferedImage ToBufferImage(long img);
==C==
JNIEXPORT jobject JNICALL Java_Test_ToBufferImage
  (JNIEnv *env, jobject obj, jlong l)
{
        IplImage *img;
        *img=l;
}
是在C轉換的地方寫錯呢?還是不是該用Jlong的方式轉?
能否請板上的大大指點給方向?謝謝


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→ gorocky:也試了IplImage *img=(IplImage *)l;
→ gorocky:搞定了...