Hi,
I would like to do some win api coding in D. I just taste the syntactic sugar but cant do anything more. I have few questions.
1. Does WinMain is needed for a D program in order to use win api ?
2. Can we use D strings in win api functions ?, If not, please show me how to convert strings

On 30/09/2018 7:24 PM, Vinod K Chandran wrote:
> Hi,
> I would like to do some win api coding in D. I just taste the syntactic sugar but cant do anything more. I have few questions.
> 1. Does WinMain is needed for a D program in order to use win api ?

No.

> 2. Can we use D strings in win api functions ?, If not, please show me how to convert strings

null terminated, nothing really special.

On Sunday, 30 September 2018 at 06:33:47 UTC, rikki cattermole wrote:
> null terminated, nothing really special.

To elaborate on this.

There is function that does it for you called toStringz()

https://dlang.org/library/std/string/to_stringz.html

On Sunday, 30 September 2018 at 06:33:47 UTC, rikki cattermole wrote:

> No.
>
>> 2. Can we use D strings in win api functions ?, If not, please show me how to convert strings
>
> null terminated, nothing really special.

Hi,
Thanks for the reply.
I somehow managed to display a messagebox with "const(wchar)*"

On Sunday, 30 September 2018 at 06:56:41 UTC, bauss wrote:
> On Sunday, 30 September 2018 at 06:33:47 UTC, rikki cattermole wrote:
>> null terminated, nothing really special.
>
> To elaborate on this.
>
> There is function that does it for you called toStringz()
>
> https://dlang.org/library/std/string/to_stringz.html

Thanks for the reply. Let me check it.

On Sunday, 30 September 2018 at 06:56:41 UTC, bauss wrote:
> There is function that does it for you called toStringz()
>
> https://dlang.org/library/std/string/to_stringz.html

Not really best for Windows. That's for calling C functions with char*, for Windows, you should be working with wchar* instead.

http://dpldocs.info/experimental-docs/std.utf.toUTFz.html

so usage is:

toUTFz!(wchar*)(your_string_here);


If passing string literals to Windows, you can put a w at the end, like:

MessageBoxW(null, "Hello"w, "World"w, 0); // note the ""w

On Sunday, 30 September 2018 at 12:48:17 UTC, Adam D. Ruppe wrote:

>
> so usage is:
>
> toUTFz!(wchar*)(your_string_here);
>
>
> If passing string literals to Windows, you can put a w at the end, like:
>
> MessageBoxW(null, "Hello"w, "World"w, 0); // note the ""w

Thanks for the reply. But it says "toUTFz" is not defined. do i missing any import statement ?

On Sunday, 30 September 2018 at 13:17:33 UTC, Vinod K Chandran wrote:
> On Sunday, 30 September 2018 at 12:48:17 UTC, Adam D. Ruppe wrote:
>
>>
>> so usage is:
>>
>> toUTFz!(wchar*)(your_string_here);
>>
>>
>> If passing string literals to Windows, you can put a w at the end, like:
>>
>> MessageBoxW(null, "Hello"w, "World"w, 0); // note the ""w
>
> Thanks for the reply. But it says "toUTFz" is not defined. do i missing any import statement ?

I am trying to make this function, but compiler is rejecting all my attempts.
```D
int MsgBox(string MsgTxt,  string titleTxt = "MessageBox") {
    const wchar* Mesg = toUTFz! (wchar*)(MsgTxt) ;
    const wchar* Tit = toUTFz! (wchar*)(itleTxt) ;
    MessageBoxW(null, Mesg, Tit, 0) ;
	return 0 ;
}
```

On Sunday, 30 September 2018 at 13:17:33 UTC, Vinod K Chandran wrote:
> Thanks for the reply. But it says "toUTFz" is not defined. do i missing any import statement ?

import std.utf;

On Sunday, 30 September 2018 at 13:21:59 UTC, Adam D. Ruppe wrote:
> On Sunday, 30 September 2018 at 13:17:33 UTC, Vinod K Chandran wrote:
>> Thanks for the reply. But it says "toUTFz" is not defined. do i missing any import statement ?
>
> import std.utf;

Thanks. It worked.
I  would like to compile this as a gui. Now it starts with the cmd. Google search didn't gave me the link i want. Any help ?