win32api.py

"""
import ctypes
MessageBox = ctypes.windll.user32.MessageBoxW
MessageBox(None, 'Hello', 'Window title', 0)
"""
########################################################
"""
import ctypes

# https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-openprocess
OpenProcess = ctypes.windll.kernel32.OpenProcess
CloseHandle = ctypes.windll.kernel32.CloseHandle
GetLastError = ctypes.windll.kernel32.GetLastError
# https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-setpriorityclass
SetPriorityClass = ctypes.windll.kernel32.SetPriorityClass
# https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-getpriorityclass
GetPriorityClass = ctypes.windll.kernel32.GetPriorityClass

pid = 11476
ProcessAllAccess = 0x1F0FFF

PRIORITY_CLASS = {}
PRIORITY_CLASS[0x00000080] = "HIGH"
PRIORITY_CLASS[0x00000020] = "NORMAL"
PRIORITY_CLASS[0x00000040] = "IDLE"

pHndl = OpenProcess(ProcessAllAccess, False, pid)
print("handle", pHndl)
if pHndl == 0:
    print("GetLastError", GetLastError())

print("before GetPriorityClass", GetPriorityClass(pHndl), PRIORITY_CLASS[GetPriorityClass(pHndl)])

if PRIORITY_CLASS[GetPriorityClass(pHndl)] == "NORMAL" or PRIORITY_CLASS[GetPriorityClass(pHndl)] == "IDLE":
    SetPriorityClass(pHndl, 0x00000080) # HIGH
else:
    SetPriorityClass(pHndl, 0x00000040)  # IDLE

print("after GetPriorityClass", GetPriorityClass(pHndl), PRIORITY_CLASS[GetPriorityClass(pHndl)])
CloseHandle(pHndl)

# handle 312
# before GetPriorityClass 64 IDLE
# after GetPriorityClass 128 HIGH
"""
########################################################

from ctypes import *
from ctypes.wintypes import *

# https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-openprocess
OpenProcess = ctypes.windll.kernel32.OpenProcess
CloseHandle = ctypes.windll.kernel32.CloseHandle
GetLastError = ctypes.windll.kernel32.GetLastError

# https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdirestartdevices
SetupDiRestartDevices = ctypes.windll.setupapi.SetupDiRestartDevices

# https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdigetclassdevsw
SetupDiGetClassDevs = ctypes.windll.setupapi.SetupDiGetClassDevsW

# https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdienumdeviceinfo
SetupDiEnumDeviceInfo = ctypes.windll.setupapi.SetupDiEnumDeviceInfo

# https://docs.microsoft.com/en-us/windows/win32/api/setupapi/nf-setupapi-setupdidestroydeviceinfolist
SetupDiDestroyDeviceInfoList = ctypes.windll.setupapi.SetupDiDestroyDeviceInfoList

# copy&paste https://github.com/sstjohn/thundergate/blob/78b46d189e110c41dd80211b2c767a7206a0431d/py/winlib.py#L147

class GUID(Structure):
    _fields_ = [("Data1", c_ulong),
                ("Data2", c_ushort),
                ("Data3", c_ushort),
                ("Data4", ARRAY(c_ubyte, 8))]

    def __str__(self):
       ret = ("%08x-" % self.Data1)
       ret += ("%04x-" % self.Data2)
       ret += ("%04x-" % self.Data3)
       ret += ("%02x%02x-" % (self.Data4[0], self.Data4[1]))
       ret += ''.join([("%02x" % b) for b in self.Data4[2:]])

       return ret

class SP_DEVINFO_DATA(Structure):
    _fields_ = [('cbSize', DWORD),
                ('ClassGuid', GUID),
                ('DevInst', DWORD),
                ('Reserved', POINTER(ULONG))]

DIGCF_PRESENT          = 0x00000002
DIGCF_ALLCLASSES       = 0x00000004
DIGCF_PROFILE          = 0x00000008

handle = SetupDiGetClassDevs(None, None, 0, DIGCF_ALLCLASSES|DIGCF_PRESENT|DIGCF_PROFILE)
if handle == 0:
    print("GetLastError", GetLastError())
print("handle", handle)

for deviceIndex in range(60):
    devInfoData = SP_DEVINFO_DATA()
    devInfoData.cbSize = sizeof(SP_DEVINFO_DATA)

    ret = SetupDiEnumDeviceInfo(handle, deviceIndex, pointer(devInfoData))
    if ret == 0:
        print("GetLastError", GetLastError())
    print(deviceIndex, "idata", devInfoData)

    # GetLastError 6
    # 52 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C759C0>
    # GetLastError 6
    # 53 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C77A40>
    # GetLastError 6
    # 54 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C759C0>
    # GetLastError 6
    # 55 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C77A40>
    # GetLastError 6
    # 56 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C759C0>
    # GetLastError 6
    # 57 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C77A40>
    # GetLastError 6
    # 58 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C759C0>
    # GetLastError 6
    # 59 idata <__main__.SP_DEVINFO_DATA object at 0x000001CF04C77A40>

SetupDiDestroyDeviceInfoList(handle)