[PyQt] Mac OS X Problem: PyQT applications not focusing on launch

[Alexei Puzikov]

hello = HelloWorld()
hello.show()
hello.raise_() # this will raise the window on Mac OS X
sys.exit(app.exec_())


Given it's a Mac-only problem, which wasn't reproducible with Qt, only
PyQt, for me it looks like a PyQt bug. But the fix is quite easy.

A.

On Fri, Sep 25, 2009 at 5:16 PM, Holger Rapp <Rapp at mrt.uka.de> wrote:
> Hi,
>
> Every pyqt example I start under Mac OS X (PyQt 4.5.4, Python 2.6 from
> Python.org, Mac OS X 10.5.8), no matter which (I tried the delivered
> examples
> in the source distribution and also the examples from the python book [1], I
> also tried the eric IDE and spyder) fail to receive the focus when launched.
> A click is needed to raise the application. Sometimes the newly opened
> window
> is hidden under others.
>
> I am aware that I have to use pythonw (instead of python) for GUI scripts,
> but
> this doesn't change anything. After googling I read that I just have to
> bundle
> my scripts in .app packages because the issues is all Apples fault. I feel
> this is
> unelegant and most importantly: all wxpython applications RECEIVE the focus
> when launched (no matter if with python or pythonw), therefore there IS a
> way
> to make scripts open up GUI applications with focus. I give code examples
> for
> pyqt (no focus) and WXPython (receives focus) below my message.
>
> Maybe someone with more insight can shed some light on this problem.
>
> [1] http://www.qtrac.eu/pyqtbook.tar.gz
>
> Greetings,
> Holger
>
> ------------------- SNIP -------------------
> # encoding: utf-8
> # wxPython example. This receives focus on launch.
> # Launch with
> # $ python hello_world_wx.py
> # File: hello_world_wx.py
>
> import wx
> app = wx.PySimpleApp()
> frame = wx.Frame(None, wx.ID_ANY, "Hello World")
> frame.Show(True)
> app.MainLoop()
> ------------------- SNAP -------------------
>
> ------------------- SNIP -------------------
> # encoding: utf-8
> # pyqt example. This DOES NOT receives focus on launch.
> # Launch with
> # $ python hello_world_qt.py
> # or
> # $ pythonw hello_world_qt.py
> # Doesn't make a difference on my computer.
> # File: hello_world_qt.py
>
> from PyQt4 import QtCore, QtGui
> import sys
>
> class HelloWorld(QtGui.QWidget):
>    def __init__(self, parent=None):
>        super(HelloWorld, self).__init__(parent)
>
>        self.setWindowTitle("Hello World")
>
> app = QtGui.QApplication(sys.argv)
> hello = HelloWorld()
> hello.show()
> sys.exit(app.exec_())
> ------------------- SNAP -------------------
>
>
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