def __init__(self):
style = wx.DEFAULT_FRAME_STYLE ^ wx.MAXIMIZE_BOX ^ wx.MINIMIZE_BOX | wx.FRAME_NO_TASKBAR
super(MainFrame, self).__init__(None, wx.ID_ANY, versionInfo.name, size=(1,1), style=style)
self.Bind(wx.EVT_CLOSE, self.onExitCommand)
self.sysTrayIcon = SysTrayIcon(self)
#: The focus before the last popup or C{None} if unknown.
#: This is only valid before L{prePopup} is called,
#: so it should be used as early as possible in any popup that needs it.
#: @type: L{NVDAObject}
self.prevFocus = None
#: The focus ancestors before the last popup or C{None} if unknown.
#: @type: list of L{NVDAObject}
self.prevFocusAncestors = None
# If NVDA has the uiAccess privilege, it can always set the foreground window.
import systemUtils
if not systemUtils.hasUiAccess():
# This makes Windows return to the previous foreground window and also seems to allow NVDA to be brought to the foreground.
self.Show()
self.Hide()
if winUser.isWindowVisible(self.Handle):
# HACK: Work around a wx bug where Hide() doesn't actually hide the window,
# but IsShown() returns False and Hide() again doesn't fix it.
# This seems to happen if the call takes too long.
self.Show()
self.Hide()
def isAudioDuckingSupported():
global _isAudioDuckingSupported
if _isAudioDuckingSupported is None:
_isAudioDuckingSupported = (config.isInstalledCopy()
or config.isAppX) and hasattr(
oledll.oleacc,
'AccSetRunningUtilityState')
_isAudioDuckingSupported &= systemUtils.hasUiAccess()
return _isAudioDuckingSupported
def send_SAS(self, **kwargs):
"""
This function simulates as "a secure attention sequence" such as CTRL+ALT+DEL.
SendSAS requires UI Access, so we provide a warning when this fails.
This warning will only be read by the remote NVDA if it is currently connected to the machine.
"""
if hasUiAccess():
ctypes.windll.sas.SendSAS(0)
else:
# Translators: Sent when a user fails to send CTRL+ALT+DEL from a remote NVDA instance
ui.message(_("No permission on device to trigger CTRL+ALT+DEL from remote"))
logger.warning("UI Access is disabled on this machine so cannot trigger CTRL+ALT+DEL")
def touchSupported(debugLog: bool = False):
"""Returns if the system and current NVDA session supports touchscreen interaction.
@param debugLog: Whether to log additional details about touch support to the NVDA log.
"""
if not config.isInstalledCopy() and not config.isAppX:
if debugLog:
log.debugWarning("Touch only supported on installed copies")
return False
if winVersion.getWinVer() < winVersion.WIN8:
if debugLog:
log.debugWarning("Touch only supported on Windows 8 and higher")
return False
maxTouches = windll.user32.GetSystemMetrics(SM_MAXIMUMTOUCHES)
if maxTouches <= 0:
if debugLog:
log.debugWarning("No touch devices found")
return False
if not systemUtils.hasUiAccess():
if debugLog:
log.debugWarning(
"NVDA doesn't have UI Access so touch isn't supported.")
return False
return True
def hasUiAccess(*args, **kwargs):
import systemUtils
systemUtils.hasUiAccess(*args, **kwargs)
