python - 无法在 python 中使用来自 user32.dll 的 ChangeWindowMessageFilter

Question

我正在尝试在 dll （user32.dll）中调用函数ChangeWindowMessageFilter

dlluser32 = ctypes.cdll.LoadLibrary('user32.dll')
dlluser32.ChangeWindowMessageFilter(0x0233, 1)
dlluser32.ChangeWindowMessageFilter(0x0048, 1)
dlluser32.ChangeWindowMessageFilter(0x0049, 1)

结果是：

ValueError: Procedure called with not enough arguments (16 bytes missing) or wrong calling convention

如何正确接听电话？我想在窗口中运行时使用此功能为我的应用程序启用拖放功能，如果它不起作用，还有其他方法吗？

Answer 1

您必须设置呼叫转换：

from ctypes.wintypes import BOOL, DWORD, UINT

dlluser32 = ctypes.cdll.LoadLibrary('user32.dll')
ChangeWindowMessageFilter = dlluser32.ChangeWindowMessageFilter

# BOOL WINAPI ChangeWindowMessageFilter(_In_  UINT message, _In_  DWORD dwFlag);
ChangeWindowMessageFilter.restype = BOOL
ChangeWindowMessageFilter.argtypes = (UINT, DWORD)

# Now you can call it there...