Python 如何在ctypes中使用鼠标/键盘挂钩中的结构信息
我有一些c代码,看起来像这样:Python 如何在ctypes中使用鼠标/键盘挂钩中的结构信息,python,c,dll,struct,ctypes,Python,C,Dll,Struct,Ctypes,我有一些c代码,看起来像这样: #pragma comment(linker, "/SECTION:.SHARED,RWS") #pragma data_seg(".SHARED") HMODULE hInstance = 0; HHOOK hKeyboardHook = 0; int lastKey = 0; int keyFlags = 0; HHOOK hMouseHook = 0; int mouseMsgID = 0; MOUSEHOOKSTRUCT *mHookPt; MOUSEH
#pragma comment(linker, "/SECTION:.SHARED,RWS")
#pragma data_seg(".SHARED")
HMODULE hInstance = 0;
HHOOK hKeyboardHook = 0;
int lastKey = 0;
int keyFlags = 0;
HHOOK hMouseHook = 0;
int mouseMsgID = 0;
MOUSEHOOKSTRUCT *mHookPt;
MOUSEHOOKSTRUCT mHookStruct;
#pragma data_seg()
BOOL WINAPI DllMain(HANDLE hModule, DWORD dwFunction, LPVOID lpNot)
{
hInstance = hModule;
return TRUE;
}
LRESULT CALLBACK KeyboardProc(int hookCode, WPARAM vKeyCode, LPARAM flags)
{
if(hookCode < 0)
{
return CallNextHookEx(hKeyboardHook, hookCode, vKeyCode, flags);
}
if(!hookCode)
{
lastKey = (int)vKeyCode;
keyFlags = (int)flags;
}
return CallNextHookEx(hKeyboardHook, hookCode, vKeyCode, flags);
}
LRESULT CALLBACK MouseProc(int hookCode, WPARAM msgID, LPARAM pMouseHookStruct)
{
if(hookCode < 0)
{
return CallNextHookEx(hMouseHook, hookCode, msgID, pMouseHookStruct);
}
if(!hookCode)
{
mouseMsgID = (int)msgID;
mHookPt = (MOUSEHOOKSTRUCT *)pMouseHookStruct;
mHookStruct = *mHookPt;
}
return CallNextHookEx(hMouseHook, hookCode, msgID, pMouseHookStruct);
}
__declspec(dllexport) int getLastKey(void)
{
if(!lastKey)
return 0;
return lastKey;
}
__declspec(dllexport) int getLastFlags(void)
{
if(!keyFlags)
return 0;
return keyFlags;
}
__declspec(dllexport) int getMsgID(void)
{
if(!mouseMsgID)
return 0;
return mouseMsgID;
}
__declspec(dllexport) MOUSEHOOKSTRUCT getMouseStruct(void)
{
return mHookStruct;
}
__declspec(dllexport) void InstallHooks(void)
{
hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD, KeyboardProc, hInstance, 0);
hMouseHook = SetWindowsHookEx(WH_MOUSE, MouseProc, hInstance, 0);
}
__declspec(dllexport) void UninstallHooks(void)
{
UnhookWindowsHookEx(hKeyboardHook);
hKeyboardHook = 0;
lastKey = 0;
keyFlags = 0;
UnhookWindowsHookEx(hMouseHook);
mouseMsgID = 0;
mHookPt = NULL;
}
不管鼠标在哪里,所有这些操作都是打印出0
。键盘钩子很好,因为它的回调过程没有使用结构。但是,如果我尝试使用WHU键盘,我也会遇到同样的问题(结构的所有值都是0)。在OS、C和Pythons ctypes之间传递结构,我遗漏了什么
class MouseHookStruct(ctypes.wintypes.Structure):
_fields_ = [("pt", ctypes.wintypes.POINT),
("hwnd", ctypes.wintypes.HWND),
("dwExtraInfo", ctypes.wintypes.POINTER(ctypes.wintypes.c_ulong))]
dll = ctypes.CDLL('blah.dll')
dll.getMouseStruct.restype = MouseHookStruct
try:
dll.InstallHooks()
mStruct = MouseHookStruct()
while True:
mStruct = dll.getMouseStruct()
print mStruct.pt.x, mStruct.pt.y
except KeyboardInterrupt:
pass
finally:
dll.UninstallHooks()