#include <windows.h>#include <stdlib.h>#include <stdio.h>void ErrorExit(const char *lpszFunction){    char szBuf[80];    LPVOID lpMsgBuf;    DWORD dw = GetLastError();    FormatMessageA(        FORMAT_MESSAGE_ALLOCATE_BUFFER |        FORMAT_MESSAGE_FROM_SYSTEM,        NULL,        dw,        MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),        (LPSTR) &lpMsgBuf,        0, NULL );	fprintf(stderr, "%s failed with error %d: %s", lpszFunction, dw, lpMsgBuf);    LocalFree(lpMsgBuf);    ExitProcess(dw);}int main(int argc, char **argv){	HOOKPROC hkprc;	static HINSTANCE hinstDLL;	static HHOOK hhook;	char buff;	hinstDLL = LoadLibraryA("tslib12.dll");	if (hinstDLL == NULL) {		ErrorExit("LoadLibrary");	}	hkprc = (HOOKPROC)GetProcAddress(hinstDLL, "_CallWndProc@12");	if (hkprc == NULL) {		fprintf(stderr, "Failed to get procaddress\n");		return 2;	}	hhook = SetWindowsHookEx(WH_GETMESSAGE,hkprc,hinstDLL,0);	if (hhook == NULL) {		fprintf(stderr, "Failed to insert hook\n");		return 3;	}	printf("Hook installed. Press any key to abort, abort, abort!\n");	fread(&buff, 1, 1, stdin);	printf("Uninstalling...\n");	if (! UnhookWindowsHookEx(hhook)) {		fprintf(stderr, "Failed to remove hook. This is kinda critical.\n");		return 4;	}	return 0;}