I'm a bit confused about how to interface with windows.h.

All I'm trying to do is retrieve some text from my clipboard to print it.

So far, I have this:

//----
import std.stdio;

import core.sys.windows.windows;

extern (Windows)
{
  HWND   GetClipboardOwner();
  BOOL   OpenClipboard(HWND hWndNewOwner);
  HANDLE GetClipboardData(UINT uFormat);
}

void main()
{
  HWND hWnd = GetClipboardOwner();

  if ( hWnd == null ) {stderr.writeln("Problem."); return;}
  if ( OpenClipboard(hWnd) == 0 ) {stderr.writeln("Problem 2."); return;}

  hWnd = cast(HWND)GetClipboardData(CF_TEXT);
}
//----

This works, but as you can see, I have to declare as "extern (Windows)" all the functions myself. Not pretty, but works I guess. I'm hitting a wall at "CF_TEXT" though: That's an enum.

Anyways...

Am I doing it wrong, or are is the amount of ported windows interface currently limited...

Kinda lost here (The fact that I'm also new to windows programming doesn't help...) :)

On 12/17/12, monarch_dodra <monarchdodra@gmail.com> wrote:
> Am I doing it wrong, or are is the amount of ported windows interface currently limited...

std.c.windows.windows is a very thin layer around the API. There are better bindings here: http://dsource.org/projects/bindings/wiki/WindowsApi

> Kinda lost here (The fact that I'm also new to windows
> programming doesn't help...) :)

Take a look here, there are many examples of WinAPI programming: https://github.com/AndrejMitrovic/DWinProgramming

On Monday, 17 December 2012 at 16:21:09 UTC, monarch_dodra wrote:
> I'm a bit confused about how to interface with windows.h.
>
> All I'm trying to do is retrieve some text from my clipboard to print it.

Something like this:

HWND hwnd = ... // your window handle (or null)
if (OpenClipboard(hwnd)) {
  HGLOBAL data = GetClipboardData(CF_TEXT);
  if (data) {
    auto text = cast(wchar*)GlobalLock(data);
    writeln(to!string(text[0 .. wcslen(text)]));
    GlobalUnlock(data);
  }
}

You'll have to define GlobalLock/GlobalUnlock, and values for the various clipboard formats (CF_TEXT and co) are documented here: http://msdn.microsoft.com/en-gb/library/windows/desktop/ff729168%28v=vs.85%29.aspx

> I'm hitting a wall at "CF_TEXT" though: That's an enum.

enum : uint {
  CF_TEXT = 1,
  CF_BITMAP = 2, // and so on
}

>   HGLOBAL data = GetClipboardData(CF_TEXT);

Oops, should be CF_UNICODETEXT (13)

On Monday, 17 December 2012 at 17:24:40 UTC, Andrej Mitrovic wrote:
> On 12/17/12, monarch_dodra <monarchdodra@gmail.com> wrote:
>> Am I doing it wrong, or are is the amount of ported windows
>> interface currently limited...
>
> std.c.windows.windows is a very thin layer around the API. There are
> better bindings here:
> http://dsource.org/projects/bindings/wiki/WindowsApi
>
>> Kinda lost here (The fact that I'm also new to windows
>> programming doesn't help...) :)
>
> Take a look here, there are many examples of WinAPI programming:
> https://github.com/AndrejMitrovic/DWinProgramming

Good deal. I was able to get it to work with that. Thanks.