wilbur.cpp

linux下用qt编写的进程间通信程序

/* wilbur.cpp */
#include <kapp.h>
#include <qcstring.h>
#include <qmultilineedit.h>
#include <dcopclient.h>
#include <math.h>
#include "wilbur.h"

int main(int argc,char **argv)
{
    QString str;
    KApplication app(argc,argv,"wilbur");

    DCOPClient *client = app.dcopClient();
    QCString dcopID = client->registerAs(app.name(),FALSE);

    WilReceiver *wilbur = new WilReceiver("wilreceiver");
    app.setMainWidget(wilbur);

    str.sprintf("wilbur registered as \"%s\"",
            dcopID.data());
    wilbur->insertLine(str);

    int returnValue = app.exec();
    client->detach();
    return(returnValue);
}
WilReceiver::WilReceiver(const char *name)
        : DCOPObject(name)
{
    setReadOnly(TRUE);
    show();
}
bool WilReceiver::process(const QCString &function,
        const QByteArray &data,
        QCString &replyType,
        QByteArray &replyData)
{
    if(function == "cubeRoot(double)") {
        double inValue;
        double outValue;
        QDataStream inStream(data,IO_ReadOnly);
        inStream >> inValue;
        outValue = cubeRoot(inValue);
        QDataStream outStream(replyData,IO_WriteOnly);
        outStream << outValue;
        replyType = "double";
        return(TRUE);
    } else {
        QString string;
        string.sprintf("call to unknown function %s",
                function.data());
        insertLine(string);
        return(FALSE);
    }
}
double WilReceiver::cubeRoot(double value)
{
    QString string;
    double root = cbrt(value);
    string.sprintf("Cube root of %g is %g",value,root);
    insertLine(string);
    return(root);
}