X11 Reparenting does not work.

Dcqt

I am trying to Reparent some widgets using x11 programming, but the windows are openings separately.

what i expect is green color window inside red color window.

what am i doing wrong.

@

using namespace std;
#include <iostream>
#include <QtWidgets>
#include <X11/Xlib.h>

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QWidget child ;
child.setGeometry(33,33,555,555);
child.setPalette(QPalette(QColor(0,255,0,255)));
child.setAutoFillBackground(true);
child.show();

   XSetWindowAttributes    frame_attributes;
  QWidget widget1 ;
   widget1.setGeometry(44,44,666,666);
   widget1.setPalette(QPalette(QColor(255,0,0,255)));
   widget1.setAutoFillBackground(true);
   widget1.show();
   Window w;
   Display *display = XOpenDisplay( 0 ); 
   int screen = DefaultScreen(display);
             XSetWindowAttributes xswa;
             xswa.background_pixel=BlackPixel(display, screen);
             xswa.border_pixel=WhitePixel(display, screen);
             xswa.event_mask=ExposureMask|KeyPressMask|KeyReleaseMask|ButtonPressMask|ButtonReleaseMask|StructureNotifyMask;
      xswa.override_redirect = False;

if ( display != NULL )
{
w = XCreateWindow(display, DefaultRootWindow(display),
0, 0, 50, 50, 0,0,InputOutput, DefaultVisual(display, screen), CWEventMask|CWBackPixel|CWBorderPixel|CWOverrideRedirect, &xswa);

  XMapWindow(display, w);
  XReparentWindow(display, child->winId(),w, 0, 0);
  XReparentWindow(display,w, widget1.winId(), 0, 0);

}else {
std::cout << "Error: Opening display" << std::endl ;
}
return app.exec();
}

@

JKSH

Hi,

See http://stackoverflow.com/questions/10089323/embedding-qwidget-into-x11-window It's a bit old, but might still work

Rahul Das

Line 36 : child is not a pointer.

Dcqt

[quote author="JKSH" date="1384238774"]Hi,

See http://stackoverflow.com/questions/10089323/embedding-qwidget-into-x11-window It's a bit old, but might still work[/quote]

Thanks JKSH,

I forgot that .

I added

 @ XFlush(display);@

after Reparenting, now windows are shown inside each other.

but the problem is when i close the main window, the windows are getting closed, but the terminal does not show the promt.

I am running application from terminal , do i need to destroy any windows on exit , if so where and which one to destroy.