Recent posts

#61

Work in progress / Re: ChatGPT examples

Last post by Vortex - November 23, 2025, 10:53:24 AM

Retrieving boot time with COM \ ( Component Oject Modeling ) :

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/*
    boot_time_wmi_local.c
    Display Windows boot time and uptime (local time)
    Works with Pelles C, uses WMI (Win32_OperatingSystem.LastBootUpTime)
*/

#define _CRT_SECURE_NO_WARNINGS
#include <windows.h>
#include <stdio.h>
#include <wbemidl.h>
#include <wchar.h>

#pragma comment(lib, "wbemuuid.lib")

// Convert WMI "yyyymmddHHMMSS.mmmmmmsUUU" to SYSTEMTIME (local)
BOOL ParseWmiTime(LPCWSTR wmiTime, SYSTEMTIME *st)
{
    if (!wmiTime || wcslen(wmiTime) < 14)
        return FALSE;

    swscanf(wmiTime, L"%4hu%2hu%2hu%2hu%2hu%2hu",
            &st->wYear, &st->wMonth, &st->wDay,
            &st->wHour, &st->wMinute, &st->wSecond);
    st->wMilliseconds = 0;
    return TRUE;
}

int main(void)
{
    HRESULT hr;
    IWbemLocator *pLoc = NULL;
    IWbemServices *pSvc = NULL;
    IEnumWbemClassObject *pEnum = NULL;
    IWbemClassObject *pObj = NULL;
    ULONG ret;
    VARIANT vt;
    SYSTEMTIME stBoot;
    FILETIME ftBoot, ftNow;
    ULONGLONG boot64, now64, diff64, diffSec;
    ULONGLONG days, hrs, mins, secs;

    // Initialize COM
    hr = CoInitializeEx(0, COINIT_MULTITHREADED);
    if (FAILED(hr)) {
        printf("CoInitializeEx failed: 0x%lx\n", hr);
        return 1;
    }

    // Initialize COM security
    hr = CoInitializeSecurity(NULL, -1, NULL, NULL,
                              RPC_C_AUTHN_LEVEL_DEFAULT,
                              RPC_C_IMP_LEVEL_IMPERSONATE,
                              NULL, EOAC_NONE, NULL);
    if (FAILED(hr)) {
        printf("CoInitializeSecurity failed: 0x%lx\n", hr);
        CoUninitialize();
        return 1;
    }

    // Create WMI locator
    hr = CoCreateInstance(&CLSID_WbemLocator, 0, CLSCTX_INPROC_SERVER,
                          &IID_IWbemLocator, (LPVOID *)&pLoc);
    if (FAILED(hr)) {
        printf("CoCreateInstance failed: 0x%lx\n", hr);
        CoUninitialize();
        return 1;
    }

    // Connect to ROOT\CIMV2
    hr = pLoc->lpVtbl->ConnectServer(pLoc,
                                    L"ROOT\\CIMV2",
                                    NULL, NULL, 0, 0, 0, 0,
                                    &pSvc);
    if (FAILED(hr)) {
        printf("ConnectServer failed: 0x%lx\n", hr);
        pLoc->lpVtbl->Release(pLoc);
        CoUninitialize();
        return 1;
    }

    // Set proxy security levels (cast to IUnknown for Pelles C)
    hr = CoSetProxyBlanket((IUnknown *)pSvc,
                          RPC_C_AUTHN_WINNT,
                          RPC_C_AUTHZ_NONE,
                          NULL,
                          RPC_C_AUTHN_LEVEL_CALL,
                          RPC_C_IMP_LEVEL_IMPERSONATE,
                          NULL,
                          EOAC_NONE);
    if (FAILED(hr)) {
        printf("CoSetProxyBlanket failed: 0x%lx\n", hr);
        pSvc->lpVtbl->Release(pSvc);
        pLoc->lpVtbl->Release(pLoc);
        CoUninitialize();
        return 1;
    }

    // Query LastBootUpTime
    hr = pSvc->lpVtbl->ExecQuery(pSvc, L"WQL",
                                L"SELECT LastBootUpTime FROM Win32_OperatingSystem",
                                WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
                                NULL, &pEnum);
    if (FAILED(hr)) {
        printf("ExecQuery failed: 0x%lx\n", hr);
        pSvc->lpVtbl->Release(pSvc);
        pLoc->lpVtbl->Release(pLoc);
        CoUninitialize();
        return 1;
    }

    // Read result
    hr = pEnum->lpVtbl->Next(pEnum, WBEM_INFINITE, 1, &pObj, &ret);
    if (SUCCEEDED(hr) && ret) {
        VariantInit(&vt);
        hr = pObj->lpVtbl->Get(pObj, L"LastBootUpTime", 0, &vt, 0, 0);
        if (SUCCEEDED(hr) && vt.vt == VT_BSTR) {
            if (ParseWmiTime(vt.bstrVal, &stBoot)) {
                SystemTimeToFileTime(&stBoot, &ftBoot);

                printf("Boot time (local): %04u-%02u-%02u %02u:%02u:%02u\n",
                      stBoot.wYear, stBoot.wMonth, stBoot.wDay,
                      stBoot.wHour, stBoot.wMinute, stBoot.wSecond);

                // Compute uptime
                GetSystemTimeAsFileTime(&ftNow);
                boot64 = ((ULONGLONG)ftBoot.dwHighDateTime << 32) | ftBoot.dwLowDateTime;
                now64  = ((ULONGLONG)ftNow.dwHighDateTime << 32) | ftNow.dwLowDateTime;

                if (now64 > boot64) {
                    diff64 = now64 - boot64;
                    diffSec = diff64 / 10000000ULL;
                    days = diffSec / 86400;
                    hrs  = (diffSec % 86400) / 3600;
                    mins = (diffSec % 3600) / 60;
                    secs = diffSec % 60;

                    printf("Uptime: %llu days, %llu hours, %llu minutes, %llu seconds\n",
                          days, hrs, mins, secs);
                }
            } else {
                printf("Could not parse WMI time.\n");
            }
        } else {
            printf("Failed to read LastBootUpTime property.\n");
        }
        VariantClear(&vt);
        pObj->lpVtbl->Release(pObj);
    }

    // Cleanup
    pEnum->lpVtbl->Release(pEnum);
    pSvc->lpVtbl->Release(pSvc);
    pLoc->lpVtbl->Release(pLoc);
    CoUninitialize();
    return 0;
}

#62

Work in progress / Re: New resizer discussion

Last post by Vortex - November 23, 2025, 10:50:39 AM

Hi John,

Please don't worry, everything is OK. Keep up the good work.

#63

Work in progress / Re: New resizer discussion

Last post by John Z - November 22, 2025, 10:13:55 PM

Every project, all 8, I have on SourceForge are open source, granted one or two might be a version or two behind due to computer replacements and getting the git or SVN access working again.

Every project on Pelles Forum has had the source included except Linecounter+.  The code is such a tangle, works well, but spaghetti-fied it would not go over well  Maybe I'll fix it for the next activity.

So I fully, and always support open source, but you open source something when it is finally finished IMO.

Anyway no worries, we are all in synch in reality I think.
The new sizer library code is posted can be used as a library or just include the sources directly.

Pelles Help file indicates he could be interested -
"The full source code for resizer.lib (and resizer64.lib) is included, so if you have a better idea how to handle this - just implement it (but it would be nice if you inform me, so I may include the changes in some future version).
"
So maybe he can use some ideas from this effort.

John Z

#64

Chit-Chat / Re: WinDirStat

Last post by John Z - November 22, 2025, 09:56:35 PM

Not open source though either like SwiftSearch is btw.

https://sourceforge.net/projects/swiftsearch/

John Z

#65

Chit-Chat / Re: WinDirStat

Last post by Vortex - November 22, 2025, 08:58:09 PM

Thanks. As I guessed, no any issues with that application.

#66

Work in progress / Re: New resizer discussion

Last post by Vortex - November 22, 2025, 07:44:23 PM

It's maybe a matter of personal tast but like Timo, I support open source projects.

#67

Work in progress / Re: New resizer discussion

Last post by TimoVJL - November 22, 2025, 07:28:10 PM

I was just a hobby programmer, but now retired and invalid.
But i bought a new HP laptop Windows 11, as it was so cheap, only 236 €

At another site

I bought an very cheap HP laptop with Intel® Core™ i3-N305 processor, so i can test code with it too.

#68

Chit-Chat / Re: WinDirStat

Last post by John Z - November 22, 2025, 05:23:34 PM

Kindly, could you share your inspection results with us?

I download the .zip installation.  Unzipped into a directory. A single .exe
Started with no system network - didn't see any attempt to communicate.
Disabled the HTTPS servers feature. Enabled the system network and started it up again.
Nothing was seen in the firewall logs or in the resource monitor.

I let it index the main drive, it created a 33 mb db in the program directory.
The everything.db was not readable with sqlite - said it was not a db. HEXEDITOR
showed ESDb as the initial DB file bytes.

Searching was fast once the index was already created, which was fast too.

Everything seems to remain in the installation directory.  There is a user
editable .ini file.  The program interface for options seem to have most of the setting.

I disabled run in background - personal choice

Didn't see anything in appdata. Didn't try the HTTPS server feature.

So looks ok to me.

John Z

#69

Work in progress / Re: New resizer discussion

Last post by John Z - November 22, 2025, 02:55:32 PM

What is a 'closed' project? - this is still developing not closed.

If you are referring to just releasing the source code it is still developing and will be released soon, as I have done with almost everything I've posted.... buggy or incomplete code shouldn't be released IMO.

The library was posted to hopefully get some feedback on it other than just my own testing, opinions and thoughts.

Once released (soon) I hope some of the more professional developers can improve my amateur programming.


John Z

Update: Attached the project zip for building the library.  Still to be done - make it
compatible with both ANSI and UNICODE - as posted it is not UNICODE aware.

Removed attachment see https://forum.pellesc.de/index.php?topic=11682.0

#70

Work in progress / Re: New resizer discussion

Last post by TimoVJL - November 22, 2025, 02:37:08 PM

Closed projects are never of interest to me.