Есть класс:
header
| Код |
#ifndef MEMORY_H
#define MEMORY_H
class memoryShared
{
public:
memoryShared();
public slots:
void to();
void from();
};
#endif // MEMORY_H
|
source
| Код |
#include "memory.h"
#include <QSharedMemory>
#include <QDebug>
#include <QBuffer>
#include <QDataStream>
QString string;
QSharedMemory sharedMemory;
void to(){
// load into shared memory
QBuffer buffer;
buffer.open(QBuffer::ReadWrite);
QDataStream out(&buffer);
string = "start start start";
out << string;
int size = buffer.size();
if (!sharedMemory.create(size)) {
//ui.label->setText(tr("Unable to create shared memory segment."));
return;
}
sharedMemory.lock();
char *to = (char*)sharedMemory.data();
const char *from = buffer.data().data();
memcpy(to, from, qMin(sharedMemory.size(), size));
sharedMemory.unlock();
}
void from()
{
/*if (!sharedMemory.attach()) {
ui.label->setText(tr("Unable to attach to shared memory segment.\n" \
"Load an image first."));
return;
}*/
QBuffer buffer;
QDataStream in(&buffer);
sharedMemory.lock();
buffer.setData((char*)sharedMemory.constData(), sharedMemory.size());
buffer.open(QBuffer::ReadOnly);
in >> string;
sharedMemory.unlock();
sharedMemory.detach();
//ui.label->setPixmap(QPixmap::fromImage(image));
}
|
Как получить доступ к методам to или from этого класса из другого класса?
На примере напишите. |
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