Toggling FullScreen

[theycal...@gmail.com]

I've been tinkering around with fullscreen windows I can get a window
to enter fullscreen mode no problem using XChangeProperty before it's
mapped or XSendEvent after it's mapped but I cannot seem to get a
window to toggle out of fullscreen mode back to windowed. What's
missing from the following source:

#include <X11/Xlib.h>

enum
{
_NET_WM_STATE_REMOVE =0,
_NET_WM_STATE_ADD = 1,
_NET_WM_STATE_TOGGLE =2
};

int main()
{
Display * pDisplay = XOpenDisplay(NULL);
int screen = DefaultScreen(pDisplay);

XSetWindowAttributes attr;
attr.border_pixel = 0;
attr.background_pixel = 0;
attr.event_mask = ExposureMask | StructureNotifyMask;

Window parentWindow = RootWindow(pDisplay, screen);
Window window = XCreateWindow(pDisplay,
parentWindow,
0,0, //left top
640, 480,
0,
0,
InputOutput,
CopyFromParent,
CWBackPixel | CWBorderPixel |
CWEventMask,
&attr);

XWarpPointer(pDisplay, None, window, 0, 0, 0, 0, 100, 100);
XGrabKeyboard(pDisplay, window, True, GrabModeAsync, GrabModeAsync,
CurrentTime);
XMapRaised(pDisplay, window);

XSelectInput(pDisplay, window, KeyPressMask | ButtonPressMask);
bool fullScreen = false;
bool run = true;
while (run)
{
XEvent event;
KeySym keySym;

while (XPending(pDisplay) > 0)
{
XNextEvent(pDisplay, &event);

switch(event.type)
{
case KeyPress:
{
fullScreen = !fullScreen;

Atom wmState = XInternAtom(pDisplay, "_NET_WM_STATE", False);
Atom fullScreen = XInternAtom(pDisplay,
"_NET_WM_STATE_FULLSCREEN", False);

XEvent xev;
xev.xclient.type=ClientMessage;
xev.xclient.serial = 0;
xev.xclient.send_event=True;
xev.xclient.window=window;
xev.xclient.message_type=wmState;
xev.xclient.format=32;
xev.xclient.data.l[0] = (fullScreen ? _NET_WM_STATE_ADD :
_NET_WM_STATE_REMOVE);
xev.xclient.data.l[1] = fullScreen;
xev.xclient.data.l[2] = 0;

XSendEvent(pDisplay, DefaultRootWindow(pDisplay), False,
SubstructureRedirectMask | SubstructureNotifyMask,
&xev);
break;
}
case ButtonPress:
{
run = false;
break;
}
default:
{
break;
}

}
}
}
XCloseDisplay(pDisplay);
}

thanks

Kyle

[Måns Rullgård]

theycal...@gmail.com writes:

> I've been tinkering around with fullscreen windows I can get a window
> to enter fullscreen mode no problem using XChangeProperty before it's
> mapped or XSendEvent after it's mapped but I cannot seem to get a
> window to toggle out of fullscreen mode back to windowed. What's
> missing from the following source:
>

> bool fullScreen = false;

[...]

> Atom fullScreen = XInternAtom(pDisplay, "_NET_WM_STATE_FULLSCREEN", False);

Reusing the variable name might have something to do with it.

Other than that I don't see anything wrong.

--
Måns Rullgård
m...@inprovide.com

[theycal...@gmail.com]

> > Atom fullScreen = XInternAtom(pDisplay, "_NET_WM_STATE_FULLSCREEN", False);
>
> Reusing the variable name might have something to do with it.
>
> Other than that I don't see anything wrong.
>

DOH!

thanks

Kyle