I didn't find how to call the queryperformancecounter function. I tried this. Returns errors, doesn't know what BOOL and LARGE_INTEGER are.

import core.sys.windows.windows;
import core.sys.windows.w32api;
import core.sys.windows.winbase;
pragma(lib, "kernel32");
extern (Windows)
{
    BOOL QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount);
}
void main()
{}

On Thursday, 15 October 2020 at 12:45:42 UTC, Atmosfear wrote:
> I didn't find how to call the queryperformancecounter function. I tried this. Returns errors, doesn't know what BOOL and LARGE_INTEGER are.
>
> import core.sys.windows.windows;
> import core.sys.windows.w32api;
> import core.sys.windows.winbase;
> pragma(lib, "kernel32");
> extern (Windows)
> {
>     BOOL QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount);
> }
> void main()
> {}

It's already defined. Just use QueryPerformanceCounter, (no extern).

On Thursday, 15 October 2020 at 16:32:06 UTC, Imperatorn wrote:
> On Thursday, 15 October 2020 at 12:45:42 UTC, Atmosfear wrote:
>> I didn't find how to call the queryperformancecounter function. I tried this. Returns errors, doesn't know what BOOL and LARGE_INTEGER are.
>>
>> import core.sys.windows.windows;
>> import core.sys.windows.w32api;
>> import core.sys.windows.winbase;
>> pragma(lib, "kernel32");
>> extern (Windows)
>> {
>>     BOOL QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount);
>> }
>> void main()
>> {}
>
> It's already defined. Just use QueryPerformanceCounter, (no extern).

I'm a newby. Can you show me an example? In which module is it?

On 16/10/2020 9:13 AM, Atmosfear wrote:
> 
> I'm a newby. Can you show me an example? In which module is it?

You can search for it on Github and it'll show up.

https://github.com/dlang/druntime/search?q=QueryPerformanceCounter

On Thursday, 15 October 2020 at 20:13:37 UTC, Atmosfear wrote:
> On Thursday, 15 October 2020 at 16:32:06 UTC, Imperatorn wrote:
>> On Thursday, 15 October 2020 at 12:45:42 UTC, Atmosfear wrote:
>>> I didn't find how to call the queryperformancecounter function. I tried this. Returns errors, doesn't know what BOOL and LARGE_INTEGER are.
>>>
>>> import core.sys.windows.windows;
>>> import core.sys.windows.w32api;
>>> import core.sys.windows.winbase;
>>> pragma(lib, "kernel32");
>>> extern (Windows)
>>> {
>>>     BOOL QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount);
>>> }
>>> void main()
>>> {}
>>
>> It's already defined. Just use QueryPerformanceCounter, (no extern).
>
> I'm a newby. Can you show me an example? In which module is it?

Just import core.sys.windows.windows and call the function like so:

---
import core.sys.windows.windows;

void main() {
  LARGE_INTEGER pc;
  QueryPerformanceCounter(&pc);
}
---

On Thursday, 15 October 2020 at 20:13:37 UTC, Atmosfear wrote:
> On Thursday, 15 October 2020 at 16:32:06 UTC, Imperatorn wrote:
>> On Thursday, 15 October 2020 at 12:45:42 UTC, Atmosfear wrote:
>>> I didn't find how to call the queryperformancecounter function. I tried this. Returns errors, doesn't know what BOOL and LARGE_INTEGER are.
>>>
>>> import core.sys.windows.windows;
>>> import core.sys.windows.w32api;
>>> import core.sys.windows.winbase;
>>> pragma(lib, "kernel32");
>>> extern (Windows)
>>> {
>>>     BOOL QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount);
>>> }
>>> void main()
>>> {}
>>
>> It's already defined. Just use QueryPerformanceCounter, (no extern).
>
> I'm a newby. Can you show me an example? In which module is it?

I see. What Editor/IDE are you using btw?

If you use Visual Studio 2019 with the VisualD extension or Visual Studio Code with the D Programming Language (code-d) extension you can get some nice help with these kinds of things.

To the question, try this:

import std.stdio;

import core.sys.windows.winbase;
import core.sys.windows.windef;
import core.sys.windows.windows;

void main()
{
    LARGE_INTEGER li;

    BOOL b = QueryPerformanceCounter(&li);

    //Don't know what you're after. Defined in winnt
    writeln(li.QuadPart);

    readln();
}

On Thursday, 15 October 2020 at 20:47:43 UTC, Imperatorn wrote:
> On Thursday, 15 October 2020 at 20:13:37 UTC, Atmosfear wrote:
>> On Thursday, 15 October 2020 at 16:32:06 UTC, Imperatorn wrote:
>>> [...]
>>
>> I'm a newby. Can you show me an example? In which module is it?
>
> I see. What Editor/IDE are you using btw?
>
> If you use Visual Studio 2019 with the VisualD extension or Visual Studio Code with the D Programming Language (code-d) extension you can get some nice help with these kinds of things.
>
> To the question, try this:
>
> import std.stdio;
>
> import core.sys.windows.winbase;
> import core.sys.windows.windef;
> import core.sys.windows.windows;
>
> void main()
> {
>     LARGE_INTEGER li;
>
>     BOOL b = QueryPerformanceCounter(&li);
>
>     //Don't know what you're after. Defined in winnt
>     writeln(li.QuadPart);
>
>     readln();
> }

I use online DMD. I'll try VS 2019 with the VisualD.

On Thursday, 15 October 2020 at 20:59:10 UTC, Atmosfear wrote:

>
> I use online DMD. I'll try VS 2019 with the VisualD.

That's the issue, then. The online versions of DMD run on Linux. You don't need VisualD for this. Just plain old dmd in a text editor will do.

On Thursday, 15 October 2020 at 20:13:37 UTC, Atmosfear wrote:
> On Thursday, 15 October 2020 at 16:32:06 UTC, Imperatorn wrote:
>> On Thursday, 15 October 2020 at 12:45:42 UTC, Atmosfear wrote:
>>> I didn't find how to call the queryperformancecounter function. I tried this. Returns errors, doesn't know what BOOL and LARGE_INTEGER are.
>>>
>>> import core.sys.windows.windows;
>>> import core.sys.windows.w32api;
>>> import core.sys.windows.winbase;
>>> pragma(lib, "kernel32");
>>> extern (Windows)
>>> {
>>>     BOOL QueryPerformanceCounter(LARGE_INTEGER *lpPerformanceCount);
>>> }
>>> void main()
>>> {}
>>
>> It's already defined. Just use QueryPerformanceCounter, (no extern).
>
> I'm a newby. Can you show me an example? In which module is it?

When you do the import, it include already the function ready to use, it isn't like C#'s PInvoke system for example, where tou need to add a function sginature/prototype with the dll where it's defined.