QT webkit Access Violation Could not initialize egl display: error 12289 when invoked in service or IIS on one website

gzhangx

I build a console app with QT 5.1, msvc 64 bit, console app. It is invoked from asp.net website or a windows service (running as admin) on windows 8 64 bit version.

EDIT: checking the source, the error 12289 is EGL_NOT_INITIALIZED, looks like the display render initialization failed. Anyone got any quick pointers?

All it does is load up some webpage, and it works fine on all webpages except one.
http://search.sunbiz.org/

On that page it exits with -1073741819 (access violation) and stderr has this:
class QWindowsEGLStaticContext *__cdecl QWindowsEGLStaticContext::create(void): Could not initialize egl display: error 12289

It runs fine when I run it in console. when it is invoked via IIS or service, it runs fine on all other websites except the one mentioned above.

Code is attached:
Header

@#ifndef HEADER1_H
#define HEADER1_H

#include <QtWebKit>
#include <QtCore>
#include <QWebPage>
#include <QAtomicInt>
#include <QAuthenticator>
#include <QFile>
#include <QFileInfo>
#include <QNetworkAccessManager>
#include <QNetworkCookieJar>
#include <QNetworkReply>
#include <QWebFrame>
#include <QProxyStyle>
#include <QApplication>

class DManager: public QObject {
Q_OBJECT
private:
QNetworkAccessManager networkAccessManager;
public:
DManager();
QWebPage webPage;
public slots:
void load();
void loadProgress(int progress);

void warning(const QString & str);
void error(const QString & str);
void loadFinished(bool ok);

};

class MyProxyStyle : public QProxyStyle
{
public:
int styleHint(StyleHint hint, const QStyleOption *option = 0,
const QWidget *widget = 0, QStyleHintReturn *returnData = 0) const
{
if (hint == QStyle::SH_UnderlineShortcut)
return 0;
return QProxyStyle::styleHint(hint, option, widget, returnData);
}
};

#endif // HEADER1_H
@

Body:
@#include <QApplication>
#include <QProxyStyle>
#include <QPrintEngine>
#include <QLocalSocket>
#include "header.h"

DManager::DManager() :networkAccessManager(this)
{
connect(&webPage, SIGNAL(loadProgress(int)), this, SLOT(loadProgress(int)));
connect(&webPage, SIGNAL(loadFinished(bool)), this, SLOT(loadFinished(bool)));

webPage.setNetworkAccessManager(&networkAccessManager);

}

void DManager::load(){
QNetworkRequest r = QNetworkRequest(QString("http://search.sunbiz.org/"));
webPage.mainFrame()->load(r);

}

void DManager::loadFinished(bool ok) {
qApp->exit(0);
}

void DManager::loadProgress(int p) {
printf("load prog %i\n", p);
FILE * fp = fopen("c:\temp\fopen.txt","a");
fprintf(fp,"load prog %i\n",p);
fclose(fp);
}

void DManager::warning(const QString & str) {
FILE * fp = fopen("c:\temp\fopen.txt","a");
fprintf(fp,"error %s", (const char*)str.toLatin1()) ;
fclose(fp);
}

void DManager::error(const QString & str) {
FILE * fp = fopen("c:\temp\fopen.txt","a");
fprintf(fp,"error %s", (const char*)str.toLatin1()) ;
fclose(fp);
}

int main(int argc, char *argv[])
{
FILE * fp = fopen("c:\temp\fopen.txt","w");
fprintf(fp, "start v0.6\n");
fclose(fp);
QApplication a(argc, argv);
a.setStyle(new MyProxyStyle());

DManager *res = new DManager();
printf("loading\n");
res->load();
int result = a.exec&#40;&#41;;    
return result;

}
@

Project:
@
QT += core network webkit webkitwidgets concurrent

QT += gui

TARGET = test
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

HEADERS += header.h
@

Code (in c#) to invoke the app (must run under iis or service)
@
var name = @"c:\temp\qtweb\release\test.exe";
var proc = Process.Start(new ProcessStartInfo(name)
{
UseShellExecute = false,
WindowStyle = ProcessWindowStyle.Hidden,
RedirectStandardError = true,
RedirectStandardOutput = true,
CreateNoWindow = true,
});
var stdout = proc.StandardOutput.ReadToEndAsync();
var stderr = proc.StandardError.ReadToEndAsync().Result;

            bool ext = proc.WaitForExit(30000);
            File.WriteAllText(@"c:\temp\test.txt", stderr + "\r\n stdout=" + stdout.Result + "\r\n" + proc.ExitCode + "\r\n"+ext);

@

Other steps:

The website/service are running as admin account. I copied all dlls under [QT]\Qt5.1.0\5.1.0\msvc2012_64\bin
to the app directory, and copied everything under [QT]\Qt5.1.0\5.1.0\msvc2012_64\plugins\platforms to platforms in app directory (structure:

app
dlls
platforms/xxx)

By default all output went to c:\temp folder.
Please help.
Thanks
GZ

ThatDude

You say that's console app yet you include
QtWebKit
QWebFrame
QApplication instead of QCoreApplication

That doesn't look like console application to me
any of these could attempt to create a widget that will lead to... oh actually it is Webkit complaining: "QT webkit Access Violation"
so either use networkAccessManager only and forget about WebKit
or make it a GUI application.

You can not create GUI components aka widgets in a windowless aka console application - you have to provide graphical interface somehow:
on linux you could do this "how to use Qt webkit in command line interface":http://qt-project.org/forums/viewthread/29671/

gzhangx

It works on all other cases, except the one website. So all my methods are fine (it is a windows app with a console). I am trying to build libglesv2 and debug it, running into many issues right now and will post back if I find anything.

ThatDude

Well your other option is:
"Qt-5-on-Windows-ANGLE-and-OpenGL":http://qt-project.org/wiki/Qt-5-on-Windows-ANGLE-and-OpenGL

..and read carefully deployment section(s)

gzhangx

I compiled with that this morning and the same thing. I am going to try to force software on d3d.