使用Python发送DDC / CI命令来监视Windows?

我想我的显示器控制从Windows(简单的东西,如更改input源),但无法find从Python发送DDC / CI命令的方式…

任何有关图书馆或方法的线索可以帮助这里?

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这很容易使用Windows监视器API 。 我不认为有任何Python绑定在那里,pywin32不包含这些功能。 但是,使用ctypes来调用它们并不难。

下面是一个例子,将显示器切换到软关机状态,然后重新打开; 它应该很容易适应它来改变输入源等等。唯一复杂的部分是最终得到物理监视器的手柄:

 from ctypes import windll, byref, Structure, WinError, POINTER, WINFUNCTYPE from ctypes.wintypes import BOOL, HMONITOR, HDC, RECT, LPARAM, DWORD, BYTE, WCHAR, HANDLE _MONITORENUMPROC = WINFUNCTYPE(BOOL, HMONITOR, HDC, POINTER(RECT), LPARAM) class _PHYSICAL_MONITOR(Structure): _fields_ = [('handle', HANDLE), ('description', WCHAR * 128)] def _iter_physical_monitors(close_handles=True): """Iterates physical monitors. The handles are closed automatically whenever the iterator is advanced. This means that the iterator should always be fully exhausted! If you want to keep handles eg because you need to store all of them and use them later, set `close_handles` to False and close them manually.""" def callback(hmonitor, hdc, lprect, lparam): monitors.append(HMONITOR(hmonitor)) return True monitors = [] if not windll.user32.EnumDisplayMonitors(None, None, _MONITORENUMPROC(callback), None): raise WinError('EnumDisplayMonitors failed') for monitor in monitors: # Get physical monitor count count = DWORD() if not windll.dxva2.GetNumberOfPhysicalMonitorsFromHMONITOR(monitor, byref(count)): raise WinError() # Get physical monitor handles physical_array = (_PHYSICAL_MONITOR * count.value)() if not windll.dxva2.GetPhysicalMonitorsFromHMONITOR(monitor, count.value, physical_array): raise WinError() for physical in physical_array: yield physical.handle if close_handles: if not windll.dxva2.DestroyPhysicalMonitor(physical.handle): raise WinError() def set_vcp_feature(monitor, code, value): """Sends a DDC command to the specified monitor. See this link for a list of commands: ftp://ftp.cis.nctu.edu.tw/pub/csie/Software/X11/private/VeSaSpEcS/VESA_Document_Center_Monitor_Interface/mccsV3.pdf """ if not windll.dxva2.SetVCPFeature(HANDLE(monitor), BYTE(code), DWORD(value)): raise WinError() # Switch to SOFT-OFF, wait for the user to press return and then back to ON for handle in _iter_physical_monitors(): set_vcp_feature(handle, 0xd6, 0x04) raw_input() set_vcp_feature(handle, 0xd6, 0x01)