win32下使用相对exe文件的绝对路径资源

在使用VC++进行开发时，如果按F5进行Debug时，当前相对资源是相对工程的vcxproj的文件夹目录，而直接双击运行exe时，资源是相对exe的文件夹目录。为了兼容这二者，最好使用绝对路径，这样无法是Debug还是直接双击运行exe时都不会遇到无法加载资源的问题。

 

char* WcharToChar(const wchar_t* wp)
{
    char *m_char;
    int len = WideCharToMultiByte(CP_ACP, 0, wp, wcslen(wp), NULL, 0, NULL, NULL);
    m_char = new char[len + 1];
    WideCharToMultiByte(CP_ACP, 0, wp, wcslen(wp), m_char, len, NULL, NULL);
    m_char[len] = '\0';
    return m_char;
}

wchar_t* CharToWchar(const char* c)
{
    wchar_t *m_wchar;
    int len = MultiByteToWideChar(CP_ACP, 0, c, strlen(c), NULL, 0);
    m_wchar = new wchar_t[len + 1];
    MultiByteToWideChar(CP_ACP, 0, c, strlen(c), m_wchar, len);
    m_wchar[len] = '\0';
    return m_wchar;
}

//int APIENTRY _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
int _tmain(int argc, _TCHAR* argv[])
{
    // https://stackoverflow.com/questions/1528298/get-path-of-executable
    HMODULE hModule = GetModuleHandleW(NULL);
    WCHAR path[MAX_PATH];
    GetModuleFileNameW(hModule, path, MAX_PATH);

    // setting -> link add Shlwapi.lib   #include <Shlwapi.h>
    PathRemoveFileSpec(path);

    //OutputDebugStringW(path);

    wcscat(path, L"\\main.lua");
    char *pcstr = WcharToChar(path);

    return 0;
}