How to create multiple windows in separated threads using Qt?

Zain · wrote on 22 Jan 2013, 03:54

Hello

I want to open multiple windows using multithread with one window one thread on single click.

Please solve this.

Thanks
Zain

ChrisW67 · wrote on 22 Jan 2013, 04:05

You cannot. All Qt GUI objects must reside in the main program thread.

Multiple non-GUI worker threads can communicate with GUI objects in the main thread using the signals/slots mechanism.

Zain · wrote on 22 Jan 2013, 04:13

Hello ChrisW67

If it is not possible then please tell me another solution to create multiple webView on single click.

ChrisW67 · wrote on 22 Jan 2013, 04:39

Threads are not required to have multiple windows. Something like:

@
void on_button_clicked() {
QWebview *webView1 = new QWebView;
webView1->setAttribute(Qt::WA_DeleteOnClose);
webView1->load(QUrl("http://qt-project.org"));
webView1->show();

QWebview *webView2 = new QWebView;
webView2->setAttribute(Qt::WA_DeleteOnClose);
webView2->load(QUrl("http://google.com"));
webView2->show();
}
@

Zain · wrote on 22 Jan 2013, 04:49

Thanks ChrisW67

Also I want to set time for each webView. After particular time webView should be closed.

So will it be feasible to use the code you have provided?

ChrisW67 · wrote on 22 Jan 2013, 04:52

Yes, using QTimer (in combination with QTime if necessary) in any number of ways.

Zain · wrote on 22 Jan 2013, 05:14

Thanks ChristW67

Zain · wrote on 23 Jan 2013, 04:15

Hello

There is issue in when i am setting timer.

I have used code as:

timer->stop

this give exception: "Exception at 0x61a3a53f, code: 0xc0000005: read access violation at: 0x0, flags=0x0"

ChrisW67 · wrote on 23 Jan 2013, 04:42

The value of timer is null (0) or otherwise invalid, dereferencing a null pointer is bad.

Zain · wrote on 23 Jan 2013, 06:36

I am unable to solve multhreading functionality to load video on multiple webview & set proxy for it for particular time.

Please tell better solution for this.