I try import windows API CharToOem function

[Quentin J.]

On Monday, 26 August 2013 at 18:02:51 UTC, Adam D. Ruppe wrote:
> To to bring it together:
>
> import std.c.windows.windows;
>
> // use the unicode version of the Windows function
> extern (Windows) bool CharToOemW(const wchar*, char*);
> alias CharToOemW CharToOem;
>
>
> public void PutStringIntoConsole(string text)
> {
>         // convert source into a Windows tchar* string
>         import std.utf;
>         auto source = toUTF16z(text);
>
>         // prepare our buffer with enough space to receive the 
> data
>         char[] dest = new char[](text.length * 2);
>
>         // call the function...
>         CharToOem(source, dest.ptr);
>
>         // we also want to get the length out instead of 
> relying on zero termination for a real D string:
>         import core.stdc.string;
>         dest = dest[0 .. strlen(dest.ptr)];
>
>         writeln(dest);
> }
>

It works,

>> 	char[] dest;
>>
>>	CharToOem(source.ptr, dest.ptr);

>And this will give you an AccessViolation if you run it because 
>dest is null.

For the array, it is my fault an error of inattention ^^

Thank for your explanation and your help.

Quentin.