python调用dxgi截图

由于DXGI是DirectX的一部分，因此需要使用DirectX API来进行截图。以下是一个基本的Python程序，可以使用DXGI来截取桌面的屏幕截图：

import ctypes
import numpy as np
from PIL import Image

# Load DXGI DLL
dxgi = ctypes.windll.dxgi

# Create DXGI factory
factory = ctypes.c_void_p()
dxgi.CreateDXGIFactory(ctypes.byref(ctypes.c_ulong(0)), ctypes.byref(factory))

# Create DXGI output
output = ctypes.c_void_p()
dxgi.GetAdapterDisplayModeList(ctypes.c_void_p(), 0, ctypes.byref(ctypes.c_ulong()), 0)
dxgi.EnumOutputs(0, ctypes.byref(output))

# Get output description
desc = dxgi.Output_GetDesc(output)
width, height = desc.Width, desc.Height

# Create DXGI device
device = ctypes.c_void_p()
dxgi.D3D11CreateDevice(ctypes.c_void_p(), 0, 0, 0, 0, 0, 11, ctypes.byref(device), 0, 0)

# Create DXGI surface
surface = ctypes.c_void_p()
dxgi.CreateDXGISurface(
    ctypes.byref(ctypes.c_ulong(0)),
    ctypes.byref(desc),
    ctypes.byref(surface)
)

# Create DXGI resource
resource = ctypes.c_void_p()
dxgi.QueryInterface(surface, ctypes.byref(ctypes.c_void_p(dxgi.IID_IDXGIResource)), ctypes.byref(resource))

# Get resource handle
handle = ctypes.c_void_p()
dxgi.GetSharedHandle(resource, ctypes.byref(handle))

# Open shared handle
gdi32 = ctypes.windll.gdi32
bitmap = gdi32.GetObjectW(handle.value, ctypes.sizeof(gdi32.BITMAP))
dc = gdi32.CreateCompatibleDC(0)
gdi32.SelectObject(dc, handle)

# Create numpy array for image data
data = np.zeros((height, width, 3), dtype=np.uint8)

# Copy image data from GDI bitmap to numpy array
gdi32.GetDIBits(
    dc,
    handle,
    0,
    height,
    ctypes.byref(data),
    ctypes.byref(ctypes.c_void_p(bitmap.bmBits)),
    0
)

# Convert BGR to RGB
data = data[:, :, ::-1]

# Create PIL image from numpy array
img = Image.fromarray(data)

# Save image to file
img.save('screenshot.png')

# Cleanup
dxgi.Release(handle)
dxgi.Release(resource)
dxgi.Release(surface)
dxgi.Release(device)
dxgi.Release(output)
dxgi.Release(factory)

该程序使用DXGI创建一个设备并获取屏幕截图。它使用PIL库将numpy数组转换为PIL图像，并将其保存到文件中。请注意，此程序只能在Windows平台上运行，并且需要安装Pillow库。