Qt：QGLShaderProgram關閉日志消息

Question

調用QGLShaderProgram :: link（）時，是否可以打開日志消息？ http://qt-project.org/doc/qt-4.8/qglshaderprogram.html#link

消息看起來像：

QGLShader::link: "Vertex shader(s) linked, fragment shader(s) linked.
"

Qt代碼如下所示：src / opengl / qglshaderprogram.cpp：893

    glLinkProgram(program);
    value = 0;
    glGetProgramiv(program, GL_LINK_STATUS, &value);
    d->linked = (value != 0);
    value = 0;
    glGetProgramiv(program, GL_INFO_LOG_LENGTH, &value);
    d->log = QString();
    if (value > 1) {
        char *logbuf = new char [value];
        GLint len;
        glGetProgramInfoLog(program, value, &len, logbuf);
        d->log = QString::fromLatin1(logbuf);
        QString name = objectName();
        if (name.isEmpty())
            qWarning() << "QGLShader::link:" << d->log;
        else
            qWarning() << "QGLShader::link[" << name << "]:" << d->log;
        delete [] logbuf;
    }
    return d->linked;
}

Answer 1

因此，似乎唯一可行的解​​決方案是按照以下方法進行重定向qWarning（）： 如何重定向qDebug，qWarning，qCritical等輸出？

 qInstallMsgHandler([](QtMsgType , const char* ) { });  // empty message handler
 bool result = program.link();
 qInstallMsgHandler(0);  // restore default message handling