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

Example 1 with AdvreqHandler

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

the class DdemlUtilTest method testAdvise.

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

            private final AdvdataHandler advdataHandler = new DdemlUtil.AdvdataHandler() {

                public int onAdvdata(int transactionType, int dataFormat, HCONV hconv, HSZ topic, HSZ item, HDDEDATA hdata) {
                    if (dataFormat == WinUser.CF_UNICODETEXT && topicName.equals(queryString(topic)) && itemName.equals(queryString(item))) {
                        Pointer pointer = accessData(hdata, null);
                        try {
                            if (testValue.equals(pointer.getWideString(0))) {
                                adviseDataReceived.countDown();
                            }
                        } finally {
                            unaccessData(hdata);
                        }
                    }
                    return Ddeml.DDE_FACK;
                }
            };

            {
                registerAdvdataHandler(advdataHandler);
                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 AdvreqHandler advreqHandler = new AdvreqHandler() {

                public HDDEDATA onAdvreq(int transactionType, int dataFormat, HCONV hconv, HSZ topic, HSZ item, int count) {
                    adviseDataRequestReceived.countDown();
                    Memory mem = new Memory((testValue.length() + 1) * 2);
                    mem.setWideString(0, testValue);
                    return createDataHandle(mem, (int) mem.size(), 0, item, dataFormat, 0);
                }
            };

            private final AdvstartHandler advstartHandler = new AdvstartHandler() {

                public boolean onAdvstart(int transactionType, int dataFormat, HCONV hconv, HSZ topic, HSZ item) {
                    adviseStartReceived.countDown();
                    return dataFormat == WinUser.CF_UNICODETEXT && topicName.equals(queryString(topic)) && itemName.equals(queryString(item));
                }
            };

            {
                registerConnectHandler(connectHandler);
                registerAdvReqHandler(advreqHandler);
                registerAdvstartHandler(advstartHandler);
                this.initialize(Ddeml.APPCMD_FILTERINITS | Ddeml.CBF_SKIP_ALLNOTIFICATIONS);
            }
        };
        server.nameService(serviceName, Ddeml.DNS_REGISTER);
        IDdeConnection con = client.connect(serviceName, topicName, null);
        con.advstart(itemName, WinUser.CF_UNICODETEXT, 5 * 1000, null, null);
        assertTrue(adviseStartReceived.await(5, TimeUnit.SECONDS));
        server.postAdvise(topicName, itemName);
        assertTrue(adviseDataRequestReceived.await(5, TimeUnit.SECONDS));
        assertTrue(adviseDataReceived.await(5, TimeUnit.SECONDS));
    } finally {
        closeQuitely(client);
        closeQuitely(server);
    }
}