Details
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Suggestion
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Resolution: Won't Do
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P4: Low
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None
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5.15.2
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None
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Linux peppy 5.4.79-1-lts #1 SMP Sun, 22 Nov 2020 14:22:21 +0000 x86_64 GNU/Linux
python-pyqt5 5.15.2-1
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Linux/X11
Description
In Windows, the application can be hidden from taskbar simply by adding a windowFlag, which is very handy;
self.setWindowFlags(self.windowFlags() | QtCore.Qt.Tool)
On Linux however, there is no native solution that works across all desktop environments. A simple solution for X11 would be to add a windowFlag that would set the _NET_WM_STATE_SKIP_TASKBAR on the window. The current way to do this is to invoke an external program (xprop) every time the window is shown, along with some cryptic code;
#!/usr/bin/python3 import ctypes import sys from PyQt5 import QtWidgets, QtCore class Window(QtWidgets.QWidget): def __init__(self): super().__init__() self._skipTaskbar() self.show() def showEvent(self, event): """ Hide the note from the taskbar, survive show/hide """ if sys.platform.startswith("linux"): self.xprop.start() self.xprop.waitForFinished() def _skipTaskbar(self): """ Hide the note from the system taskbar """ if sys.platform.startswith("win"): self.setWindowFlags(self.windowFlags() | QtCore.Qt.Tool) elif sys.platform.startswith("linux"): # X11: Manually set the _NET_WM_STATE_SKIP_TASKBAR flag on each window # Avoid various WM issues related with WA_X11NetWmWindowType* ctypes.pythonapi.PyCapsule_GetPointer.restype = ctypes.c_void_p ctypes.pythonapi.PyCapsule_GetPointer.argtypes = [ctypes.py_object, ctypes.c_char_p] wid = ctypes.pythonapi.PyCapsule_GetPointer(self.winId().ascapsule(), None) cmd = f"-id {wid} -f _NET_WM_STATE 32a -set _NET_WM_STATE _NET_WM_STATE_SKIP_TASKBAR" self.xprop = QtCore.QProcess() self.xprop.setProgram("xprop") self.xprop.setArguments(cmd.split()) if __name__ == "__main__": app = QtWidgets.QApplication([]) gui = Window() app.exec()