Can't Link DWT in Linux 64-bit

[Jacob Carlborg via Digitalmars-d-dwt]

On 2014-07-19 01:47, Mike wrote:

> Well, I haven't tried to build yet, but I have been going through the
> source code, and I found something interesting.
>
> I downloaded the swt source code for both Win32 and Win64, and compared
> them in WinMerge.
>
> What's interesting is the source code is littered with stuff like this:
>
> File: org/eclipse/swt/widgets/IME.java

Yes, they have a tool (or built step) that replaces "int /*long*/" with 
"long /*int*/" to convert to 64bit.

>
> SWT - Win32
> *******************
> LRESULT WM_KILLFOCUS (int /*long*/ wParam, int /*long*/ lParam) {
>      if (!isInlineEnabled ()) return null;
>      int /*long*/ hwnd = parent.handle;
>      int /*long*/ hIMC = OS.ImmGetContext (hwnd);
>      if (hIMC != 0) {
>          if (OS.ImmGetOpenStatus (hIMC)) {
>              OS.ImmNotifyIME (hIMC, OS.NI_COMPOSITIONSTR,
> OS.CPS_COMPLETE, 0);
>          }
>          OS.ImmReleaseContext (hwnd, hIMC);
>      }
>      return null;
> }
>
> SWT - Win64
> ********************
> LRESULT WM_KILLFOCUS (long /*int*/ wParam, long /*int*/ lParam) {
>      if (!isInlineEnabled ()) return null;
>      long /*int*/ hwnd = parent.handle;
>      long /*int*/ hIMC = OS.ImmGetContext (hwnd);
>      if (hIMC != 0) {
>          if (OS.ImmGetOpenStatus (hIMC)) {
>              OS.ImmNotifyIME (hIMC, OS.NI_COMPOSITIONSTR,
> OS.CPS_COMPLETE, 0);
>          }
>          OS.ImmReleaseContext (hwnd, hIMC);
>      }
>      return null;
> }
>
>
> DWT
> ********************
> LRESULT WM_KILLFOCUS (int /*long*/ wParam, int /*long*/ lParam) {
>      if (!isInlineEnabled ()) return null;
>      auto hwnd = parent.handle;
>      auto hIMC = OS.ImmGetContext (hwnd);
>      if (hIMC !is null) {
>          if (OS.ImmGetOpenStatus (hIMC)) {
>              OS.ImmNotifyIME (hIMC, OS.NI_COMPOSITIONSTR,
> OS.CPS_COMPLETE, 0);
>          }
>          OS.ImmReleaseContext (hwnd, hIMC);
>      }
>      return null;
> }
>
> It appears DWT has modeled any `Handle`s as `void*`, and therefore uses
> `auto` whenever possible.  I could probably do a search & replace for
> "int /*long*/" or "/*long*/ int" and replace it with "ptrdiff_t" and
> cover 80% of the necessary changes.
>
> Thoughts?

Ideally I would like that the native type is used, that's what I've done 
in the OS X port. But if the existing code uses "int /*long*/" then I 
would say it's acceptable to use "ptrdiff_t". Perhaps we want to come up 
with a new name?

> Also, could you please answer the following questions for me?
> * What version of SWT is the current DWT source code based on?

It's 3.449.0, at least according to this [1].

> * How would you like me to submit pull requests? Little-by-little, or
> one big whopper?

If possible, smaller changes. But I would prefer DWT to be buildable 
in-between pull requests.

> * How does one go about testing DWT?

[1] 
https://github.com/d-widget-toolkit/org.eclipse.swt.win32.win32.x86/blob/master/src/org/eclipse/swt/internal/Library.d#L31-L41

-- 
/Jacob Carlborg