Examples with RequestHandler com.sun.jna.platform.win32.DdemlUtil.RequestHandler used on opensource projects

Example 1 with RequestHandler

use of com.sun.jna.platform.win32.DdemlUtil.RequestHandler in project jna by java-native-access.

the class DdemlUtilTest method testRequest.

@Test
public void testRequest() throws InterruptedException {
    final String serviceName = "TestService";
    final String topicName = "TestTopic";
    final String itemName = "TestItem";
    final String testValue = "Execute�������";
    final CountDownLatch pokeReceived = new CountDownLatch(1);
    StandaloneDdeClient client = null;
    StandaloneDdeClient server = null;
    try {
        client = new StandaloneDdeClient() {

            {
                this.initialize(Ddeml.APPCMD_CLIENTONLY | Ddeml.CBF_SKIP_REGISTRATIONS | Ddeml.CBF_SKIP_UNREGISTRATIONS);
            }
        };
        server = new StandaloneDdeClient() {

            private final ConnectHandler connectHandler = new ConnectHandler() {

                public boolean onConnect(int transactionType, HSZ topic, HSZ service, Ddeml.CONVCONTEXT convcontext, boolean sameInstance) {
                    return topicName.equals(queryString(topic));
                }
            };

            private final RequestHandler requestHandler = new RequestHandler() {

                public HDDEDATA onRequest(int transactionType, int dataFormat, HCONV hconv, HSZ topic, HSZ item) {
                    if (dataFormat == WinUser.CF_UNICODETEXT && queryString(topic).equals(topicName) && queryString(item).equals(itemName)) {
                        Memory mem = new Memory((testValue.length() + 1) * 2);
                        mem.setWideString(0, testValue);
                        HDDEDATA result = createDataHandle(mem, (int) mem.size(), 0, item, dataFormat, 0);
                        pokeReceived.countDown();
                        return result;
                    } else {
                        return null;
                    }
                }
            };

            {
                registerConnectHandler(connectHandler);
                registerRequestHandler(requestHandler);
                this.initialize(Ddeml.APPCMD_FILTERINITS | Ddeml.CBF_SKIP_ALLNOTIFICATIONS);
            }
        };
        server.nameService(serviceName, Ddeml.DNS_REGISTER);
        IDdeConnection con = client.connect(serviceName, topicName, null);
        HDDEDATA data = con.request(itemName, WinUser.CF_UNICODETEXT, 5 * 1000, null, null);
        try {
            try {
                Pointer pointer = server.accessData(data, null);
                assertThat(pointer.getWideString(0), is(testValue));
            } finally {
                server.unaccessData(data);
            }
        } finally {
            server.freeDataHandle(data);
        }
        assertTrue(pokeReceived.await(5, TimeUnit.SECONDS));
    } finally {
        closeQuitely(client);
        closeQuitely(server);
    }
}