def open(self):
if self.is_open:
return
desired_physical_number = self.monitor.info.monitor.device.number
desired_device_name = self.monitor.info.adapter.device.name
# We need to find the hMonitor for the desired monitor using EnumDisplayMonitors
virtual_handle = HMONITOR()
def callback(hMonitor: HMONITOR, hdcMonitor: HDC,
lprcMonitor: POINTER(RECT), dwData: LPARAM) -> bool:
info = monitor_info.win32_get_monitor_info(hMonitor)
if info.szDevice == desired_device_name:
virtual_handle.value = hMonitor
return False
return True
windll.user32.EnumDisplayMonitors(None, None,
_MONITORENUMPROC(callback), None)
if virtual_handle.value == 0:
raise RuntimeError(
f"Could not find a virtual handle for monitor {self.monitor}")
# Get physical monitor count
physical_count = DWORD()
if not windll.dxva2.GetNumberOfPhysicalMonitorsFromHMONITOR(
virtual_handle, byref(physical_count)):
raise WinError()
assert (physical_count.value > desired_physical_number)
# Get physical monitor handles
physical_array = (_PHYSICAL_MONITOR * physical_count.value)()
if not windll.dxva2.GetPhysicalMonitorsFromHMONITOR(
virtual_handle, physical_count, physical_array):
raise WinError()
for i, physical in enumerate(physical_array):
if i != desired_physical_number:
self._close(physical.handle)
self.handle = physical.handle
self.is_open = True
def callback(hmonitor, hdc, lprect, lparam):
monitors.append(HMONITOR(hmonitor))
return True
def _callback(hmonitor, hdc, lprect, lparam):
hmonitors.append(HMONITOR(hmonitor))
del hmonitor, hdc, lprect, lparam
return True # continue enumeration
def callback(hmonitor, hdc, pointer_rect, param):
monitors.append(HMONITOR(hmonitor))
return True