From f55c317e377aaf0b3e24904e88dc1c4a6e15a20a Mon Sep 17 00:00:00 2001 From: Kurt Korbatits Date: Mon, 9 Nov 2009 14:26:02 +1000 Subject: Fixed runtime error in QAudioInput::bytesReady() function If bytesReady() was called before start(), Div by Zero. Added check for this condition. Task-number:QTBUG-5300 Reviewed-by:Justin McPherson --- src/multimedia/audio/qaudioinput_win32_p.cpp | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/multimedia/audio/qaudioinput_win32_p.cpp b/src/multimedia/audio/qaudioinput_win32_p.cpp index 31f6e25..b7f9ffd 100644 --- a/src/multimedia/audio/qaudioinput_win32_p.cpp +++ b/src/multimedia/audio/qaudioinput_win32_p.cpp @@ -333,6 +333,9 @@ void QAudioInputPrivate::close() int QAudioInputPrivate::bytesReady() const { + if(period_size == 0 || buffer_size == 0) + return 0; + int buf = ((buffer_size/period_size)-waveFreeBlockCount)*period_size; if(buf < 0) buf = 0; -- cgit v0.12 ex : Qt.git
Qt s a cross-platform application framework that is used for developing application software that can be run on various software and hardware platforms with little or no change in the underlying codebase, while still being a native application with native capabilities and speed.
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path: root/doc/src/snippets/code/src_activeqt_control_qaxfactory.cpp
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//! [0]
QStringList ActiveQtFactory::featureList() const
{
    QStringList list;
    list << "ActiveX1";
    list << "ActiveX2";
    return list;
}

QObject *ActiveQtFactory::createObject(const QString &key)
{
    if (key == "ActiveX1")
        return new ActiveX1(parent);
    if (key == "ActiveX2")
        return new ActiveX2(parent);
    return 0;
}

const QMetaObject *ActiveQtFactory::metaObject(const QString &key) const
{
    if (key == "ActiveX1")
        return &ActiveX1::staticMetaObject;
    if (key == "ActiveX2")
        return &ActiveX2::staticMetaObject;
}

QUuid ActiveQtFactory::classID(const QString &key) const
{
    if (key == "ActiveX1")
        return "{01234567-89AB-CDEF-0123-456789ABCDEF}";
    ...
    return QUuid();
}

QUuid ActiveQtFactory::interfaceID(const QString &key) const
{
    if (key == "ActiveX1")
        return "{01234567-89AB-CDEF-0123-456789ABCDEF}";
    ...
    return QUuid();
}

QUuid ActiveQtFactory::eventsID(const QString &key) const
{
    if (key == "ActiveX1")
        return "{01234567-89AB-CDEF-0123-456789ABCDEF}";
    ...
    return QUuid();
}

QAXFACTORY_EXPORT(
    ActiveQtFactory,			      // factory class
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // type library ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}"  // application ID
)
//! [0]


//! [1]
QAXFACTORY_BEGIN(
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // type library ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}"  // application ID
)
    QAXCLASS(Class1)
    QAXCLASS(Class2)
QAXFACTORY_END()
//! [1]


//! [2]
#include <qapplication.h>
#include <qaxfactory.h>

#include "theactivex.h"

QAXFACTORY_DEFAULT(
    TheActiveX,				  // widget class
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // class ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // interface ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // event interface ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // type library ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}"  // application ID
)
//! [2]


//! [3]
settings->setValue("/CLSID/" + classID(key)
                   + "/Implemented Categories/"
                   + "/{00000000-0000-0000-000000000000}/.",
                   QString());
//! [3]


//! [4]
settings->remove("/CLSID/" + classID(key)
                 + "/Implemented Categories"
                 + "/{00000000-0000-0000-000000000000}/.");
//! [4]


//! [5]
int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    if (!QAxFactory::isServer()) {
        // initialize for stand-alone execution
    }
    return app.exec();
}
//! [5]


//! [6]
if (QAxFactory::isServer()) {
    QAxFactory::stopServer();
    QAxFactory::startServer(QAxFactory::SingleInstance);
}
//! [6]


//! [7]
#include <qaxfactory.h>

#include "theactivex.h"

QAXFACTORY_DEFAULT(
    TheActiveX,				  // widget class
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // class ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // interface ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // event interface ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // type library ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}"  // application ID
)
//! [7]


//! [8]
QAXFACTORY_EXPORT(
    MyFactory,			              // factory class
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // type library ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}"  // application ID
)
//! [8]


//! [9]
QAXFACTORY_BEGIN(
    "{01234567-89AB-CDEF-0123-456789ABCDEF}", // type library ID
    "{01234567-89AB-CDEF-0123-456789ABCDEF}"  // application ID
)
    QAXCLASS(Class1)
    QAXCLASS(Class2)
QAXFACTORY_END()
//! [9]
generated by cgit v0.12 at 2025-08-15 16:44:41 (GMT)