C++ QStatusBar::removeWidget方法代码示例

int StatusBar::removeWidget(lua_State * L) // ( QWidget * widget )
{
	QStatusBar* obj = ObjectHelper<QStatusBar>::check( L, 1);
	QWidget* widget = ObjectHelper<QWidget>::check( L, 2);
	obj->removeWidget( widget ) ;
	return 0;
}

void db_key::newItem(QString name)
{
	NewKey *dlg = new NewKey(qApp->activeWindow(), name);
	QProgressBar *bar;
	QStatusBar *status = mainwin->statusBar();
	pki_evp *nkey = NULL;
	pki_scard *cardkey = NULL;
	pki_key *key = NULL;

	if (!dlg->exec()) {
		delete dlg;
		return;
	}
	int ksize = dlg->getKeysize();
	if (ksize > 0) {
		if (ksize < 32) {
			QMessageBox::warning(NULL, XCA_TITLE,
				tr("Key size too small !"));
			delete dlg;
			return;
		}
		if (ksize < 1024 || ksize > 8192)
			if (QMessageBox::warning(NULL, XCA_TITLE,
				tr("You are sure to create a key of the size: %1 ?").arg(ksize),
				QMessageBox::Yes | QMessageBox::No) !=
				QMessageBox::Yes)
			{
				delete dlg;
				return;
			}
	}
	mainwin->repaint();
	bar = new QProgressBar();
	status->addPermanentWidget(bar, 1);
	try {
		if (dlg->isToken()) {
			key = cardkey = new pki_scard(dlg->keyDesc->text());
			cardkey->generateKey_card(dlg->getKeyCardSlot(),
						 ksize, bar);
		} else {
			key = nkey = new pki_evp(dlg->keyDesc->text());
			nkey->generate(ksize, dlg->getKeytype(), bar,
				dlg->getKeyCurve_nid());
		}
		key = (pki_key*)insert(key);
		emit keyDone(key->getIntNameWithType());
		createSuccess(key);

	} catch (errorEx &err) {
		delete key;
		mainwin->Error(err);
	}
	status->removeWidget(bar);
	delete bar;
	delete dlg;
}

/** Preprocess the whole sound file,
   by looping through and processing every chunk in the file.
   A progress bar is displayed in the toolbar, because this can
   be time consuming.
*/
void SoundFile::preProcess()
{
    //jumpToChunk(0);
    gdata->setDoingActiveAnalysis(true);
    myassert(firstTimeThrough == true);
    readChunk(bufferSize() - offset());
    //readChunk(framesPerChunk());
    //processNewChunk();
    //printf("preProcessing\n");
    //for(int j=0; j<numChannels(); j++)
    //  channels(j)->setframesPerChunk(toRead);

    // Create a progress bar in the status bar to tell the user we're preprocessing
    MainWindow *theMainWindow = (MainWindow*) qApp->mainWidget();
    QStatusBar *theStatusBar = theMainWindow->statusBar();
    QLabel *message = new QLabel("Preprocessing data:", theStatusBar, "message");
    //QLabel *message = new QLabel("Preprocessing data:", theMainWindow, "message");

    //QProgressBar *progress = new QProgressBar(stream->totalFrames() / framesPerChunk(), theMainWindow, "progress bar");
    Q3ProgressBar *progress = new Q3ProgressBar(stream->totalFrames() / framesPerChunk(), theStatusBar, "progress bar");
    progress->setProgress(0);
    progress->setMaximumHeight(16);


    theStatusBar->addWidget(message);
    theStatusBar->addWidget(progress);

    message->show();
    progress->show();

    int frameCount = 1;
    int updateInterval = MAX(1, progress->totalSteps() / 50); // We'll update 50 times only

    //while(read_n(toRead, stream) == toRead) { // put data in channels
    while(readChunk(framesPerChunk()) == framesPerChunk()) { // put data in channels
        //printf("pos = %d\n", stream->pos);
        //processNewChunk();
        //incrementChunkNum();
        frameCount++;

        if (frameCount % updateInterval == 0) {
            progress->setProgress(progress->progress() + updateInterval);
            qApp->processEvents();
            frameCount = 1;
        }
    }
    //printf("totalChunks=%d\n", totalChunks());
    //printf("currentChunks=%d\n", currentChunk());
    filteredStream->close();
    filteredStream->open_read(filteredFilename);
    jumpToChunk(0);


    progress->setProgress(progress->totalSteps());
    theStatusBar->removeWidget(progress);
    theStatusBar->removeWidget(message);
    delete progress;
    delete message;

    gdata->setDoingActiveAnalysis(false);
    firstTimeThrough = false;
    //printf("freqLookup.size()=%d\n", channels(0)->freqLookup.size());
}