Now i want to create/instanciate a Structure and use it with a native method.

this is the library function definition

int klom_spot_send_new_wordlist(Pointer spot_id, com.sun.jna.ptr.PointerByReference wordlist_list, int nr_wordlist);

This is the autogenerated code of the Structure by JNAerator.

public static class klom_spot_wordlist_s extends com.sun.jna.Structure { public klom_spot_wordlist_s() { } public klom_spot_wordlist_s(com.sun.jna.Pointer pointer, int offset) { super(); useMemory(pointer, offset); read(); } public klom_spot_wordlist_s(klom_spot_wordlist_s struct) { this(struct.getPointer(), 0); } ... public com.sun.jna.ptr.ByteByReference name; public com.sun.jna.ptr.ByteByReference name_orig; public com.sun.jna.ptr.PointerByReference phrases; public int nr_phrases; public int lm_nr; }

the following code simply crashes, which seems to be because the structure is not correct.

How can I get a Pointer from a Java String and pass it to a ByteByReference ?

PointerByReference wordlist_ptr = new PointerByReference(); // klomspot_array klom_spot_wordlist_s[] word_list = new klom_spot_wordlist_s[1]; Pointer[] wp_array = new Pointer[1];

// klomspot element klom_spot_wordlist_s wl_element = new klom_spot_wordlist_s();

// wordlist name as ByteByReference ByteByReference b_name = new ByteByReference(); Memory b_name_mem = new Memory(20); b_name_mem.setString(0, "name"); b_name.setPointer(b_name_mem.getPointer(0));

// wordlist orig_name as ByteByReference ByteByReference b_name_orig = new ByteByReference(); Memory b_name_mem_orig = new Memory(20); b_name_mem_orig.setString(0, "name_orig"); b_name_orig.setPointer(b_name_mem_orig.getPointer(0));

// initializing first array-element wl_element.lm_nr = 1; wl_element.name = b_name; wl_element.name_orig = b_name_orig; wl_element.nr_phrases = 1;

// setting phrases StringArray sa = new StringArray(new String[]{"foo", "faa"}); PointerByReference ptr_phrase = new PointerByReference(); ptr_phrase.setPointer(sa.getPointer(0));

wl_element.phrases = ptr_phrase;

// setting array-element word_list[0] = wl_element; wp_array[0] = wl_element.getPointer();

// set first Pointer address. wordlist_ptr.setPointer(wp_array[0]);

thanks in advance

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