Support Ubuntu 24.04 with Qt 6

[bear101]

Description

FFmpeg now builds on Ubuntu 24 but WebRTC still cannot. This is a continuation of Pull-request: #2470

Push-to-talk keys are not working in Qt 6. Hotkeys relies on QX11Info which is unavailable in Qt 6.

Checkout MainWindow::enableHotKey() and MainWindow::disableHotKey() where code needs to be replaced:

Display* display = QX11Info::display();
Window x11window = QX11Info::appRootWindow();

QX11Info::display() can most likely be replaced by this:

Display* display = XOpenDisplay(nullptr)

However, I cannot find a substitute for QX11Info::appRootWindow().

The source code for the original functions in QX11Info can be found here.

Application

• qtTeamTalk
• TeamTalkAndroid
• iTeamTalk
• TeamTalkServer

[bear101]

@CoBC do you have any idea how we can replace QX11Info::appRootWindow()? It is required for hotkeys using Qt 6.

[CoBC]

I guess this topic can help: QX11Info::display() and QX11Info::appRootWindow() replacement | Qt Forum <https://forum.qt.io/topic/126593/qx11info-display-and-qx11info-approotwindow-replacement/5>

[CoBC]

@bear101 It seams we can replace:

Window x11window = QX11Info::appRootWindow();

By:

Window x11window = RootWindow(display, DefaultScreen(display));

However global shortcuts only work in TT window and not outside of TT :(