Question

How to get the current system and date time in C++ Win32 API

Answer 1

#include <Windows.h> 
#include <sstream>

int CALLBACK WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
    // Get the current system time
    SYSTEMTIME systemTime;
    GetSystemTime(&systemTime);

    std::ostringstream oss;

    oss << systemTime.wDay << "/" << systemTime.wMonth << "/" << systemTime.wYear;
    oss << " ";
    oss << systemTime.wHour << ":" << systemTime.wMinute << ":" << systemTime.wSecond;

    std::string sysTime = oss.str();

    /*
    typedef struct _SYSTEMTIME {
        WORD wYear;
        WORD wMonth;
        WORD wDayOfWeek;
        WORD wDay;
        WORD wHour;
        WORD wMinute;
        WORD wSecond;
        WORD wMilliseconds;
    } SYSTEMTIME, *PSYSTEMTIME, *LPSYSTEMTIME;
    */

    MessageBoxA(0, sysTime.c_str(), "Current System Time", MB_OK);

    return 0;
}



/*
run:

7/12/2024 11:46:21

*/

 

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