Hello everyone, I'm Windows 10 as of right now,
I have this situation where I would like to update /hosts file, however sometimes I do not have the required permissions, since sometimes I forget to run the .d script with administrator's rights. Is there any way to prompt for administrator's rights, to save the additional effort of lots of clicks?


import std.file;

void main(){
	append("C:/Windows/System32/drivers/etc/hosts", "hahaha");
}



std.file.FileException@std\file.d(859): C:/Windows/System32/drivers/etc/hosts: Access is denied.
----------------
0x00404223
0x00402295
0x00403751
0x004035EB
0x00402DE7
0x75688494 in BaseThreadInitThunk
0x773741C8 in RtlAreBitsSet
0x77374198 in RtlAreBitsSet

On Tuesday, 4 June 2019 at 16:30:41 UTC, BoQsc wrote:
> Is there any way to prompt for administrator's rights, to save the additional effort of lots of clicks?

Looking at:
https://stackoverflow.com/questions/31844584/is-there-an-api-call-to-prompt-user-for-uac-elevation

You can try something like this:

```
import core.sys.windows;

SHELLEXECUTEINFO shex;
shex.cbSize = shex.sizeof;
shex.lpVerb = "runas"; // runas, open
shex.lpFile = "rdmd";
shex.lpParameters = `"--eval=copy("""test.txt""","""C:/Program Files/test.txt""")"`;
shex.nShow = SW_SHOW; //SW_HIDE;
shex.fMask = SEE_MASK_NOCLOSEPROCESS;
BOOL retshx = ShellExecuteEx(&shex);

import core.Thread: Thread, msecs;

// Give it 5 seconds to finish
if (retshx) {
    int count = 0;
    DWORD exitCode;

    do {
        if (!GetExitCodeProcess(shex.hProcess, &exitCode)) break;
        if (count++ < 50) {
            Thread.sleep(100.msecs);
        } else break;
    }
    while (exitCode != STATUS_WAIT_0); // STILL_ACTIVE
    CloseHandle(shex.hProcess);
}
```

Here I use rdmd with --eval, but you can use any program that does the file handling you want.
Note that lpParameters has weird escape rules: parameters are space separated unless quoted with ", and to get actual quotes you use three of them like """.