Calling a Java method from C++ via JNI problem.

Hi all,
I am having some real difficulties calling a Java method from C++
code.

I load my c++ dll from java using:

static {
System.loadLibrary("libname");
}

I then init the dll by calling a method in the c++ dll like this:
(trying to save the references for env and obj)

static JNIEnv *jEnv;
static jobject jObj;

JNIEXPORT void JNICALL Java_poker_jni_JavaClassName_init(JNIEnv *env,
jobject obj){
jEnv = env;
jObj = env->NewGlobalRef(obj);
}


I have a function in my dll which I want to call a method (void
doTextOut(int i)) in my Java class that loaded the dll, it looks like
this:

void update(){

jclass cls = jEnv->GetObjectClass(jObj);
jmethodID mid = jEnv->GetMethodID(cls, "doTextOut", "(I)V");
jEnv->CallVoidMethod(jObj, mid);

}

this method is called from my WndProc callback function.

When I do this the JVM will crash.

If I try to do exactly the same thing as update() in the JNIEXPORT
void JNICALL Java_poker_jni_JavaClassName_init(JNIEnv *env, jobject
obj) function it works!?! But the thing is that I really need to do it
from update()

Any suggestion on what I am doing wrong, or is this something that is
not even possible to do with JNI?

Any help would be greatly appreciated!

Best Regards
AET
.

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