[PATCH 0/1] MR2658: include: Add windows.graphics.capture.interop.h file.

[Mohamad Al-Jaf (＠maljaf)]

Needed for PyWinRT.

[PATCH 1/1] include: Add windows.graphics.capture.interop.h file.

[Mohamad Al-Jaf]

From: Mohamad Al-Jaf

Needed for PyWinRT.
---
 include/Makefile.in                        |  1 +
 include/windows.graphics.capture.interop.h | 39 ++++++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 include/windows.graphics.capture.interop.h

diff --git a/include/Makefile.in b/include/Makefile.in
index 54d6dca234d..00fd03b53a6 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -817,6 +817,7 @@ SOURCES = \
    windows.gaming.ui.idl \
    windows.globalization.idl \
    windows.graphics.capture.idl \
+	windows.graphics.capture.interop.h \
    windows.graphics.directx.direct3d11.idl \
    windows.graphics.directx.idl \
    windows.graphics.effects.idl \
diff --git a/include/windows.graphics.capture.interop.h b/include/windows.graphics.capture.interop.h
new file mode 100644
index 00000000000..58a602ba3ff
--- /dev/null
+++ b/include/windows.graphics.capture.interop.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2023 Mohamad Al-Jaf
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+#ifndef __WINDOWS_GRAPHICS_CAPTURE_INTEROP_H_
+#define __WINDOWS_GRAPHICS_CAPTURE_INTEROP_H_
+
+#include <windows.ui.composition.h>
+#include <windows.graphics.capture.h>
+#include <sdkddkver.h>
+
+#undef INTERFACE
+#define INTERFACE IGraphicsCaptureItemInterop
+DECLARE_INTERFACE_IID_(IGraphicsCaptureItemInterop, IUnknown, "3628e81b-3cac-4c60-b7f4-23ce0e0c3356")
+{
+    /*** IUnknown methods ***/
+    STDMETHOD(QueryInterface)(THIS_ REFIID iid, void **obj) PURE;
+    STDMETHOD_(ULONG,AddRef)(THIS) PURE;
+    STDMETHOD_(ULONG,Release)(THIS) PURE;
+    /*** IGraphicsCaptureItemInterop methods ***/
+    STDMETHOD(CreateForWindow)(THIS_ HWND window, REFIID iid, void **result) PURE;
+    STDMETHOD(CreateForMonitor)(THIS_ HMONITOR monitor, REFIID iid, void **result) PURE;
+};
+
+#endif /* __WINDOWS_GRAPHICS_CAPTURE_INTEROP_H_ */

[Biswapriyo Nath (＠Biswa96)]

Thank you. Just for reference, the pywinrt project workarounds the absence of that header file in this https://github.com/pywinrt/pywinrt/commit/1c7d7118b3025c14e33fc7d01b8afa30c2... commit. Though adding this header file results the following compiler error, it seems related to that project.

```
cppwinrt/winrt/base.h:676:27: error: constexpr variable 'guid_v<IGraphicsCaptureItemInterop>' must be initialized by a constant expression
```

[Zebediah Figura (＠zfigura)]

This isn't an IDL in the SDK, but is there any reason we can't make it an IDL anyway?

[Mohamad Al-Jaf (＠maljaf)]

On Mon Apr 17 04:43:36 2023 +0000, Zebediah Figura wrote:
> This isn't an IDL in the SDK, but is there any reason we can't make it
> an IDL anyway?

Yeah, I tried that but it results in this error

tools/widl/widl -o include/windows.graphics.capture.interop.h -m32 --nostdinc -Ldlls/* -Iinclude -Iinclude -D__WINESRC__ \
      include/windows.graphics.capture.interop.idl
    include/windows.h:38:1: error: Unable to open include file stdarg.h
    make[1]: *** [Makefile:163589: include/windows.graphics.capture.interop.h] Error 1

It doesn't seem worth debugging given how small the file is.

[Mohamad Al-Jaf (＠maljaf)]

On Mon Apr 17 04:44:59 2023 +0000, Biswapriyo Nath wrote:
> Thank you. Just for reference, the pywinrt project workarounds the
> absence of that header file in this
> https://github.com/pywinrt/pywinrt/commit/1c7d7118b3025c14e33fc7d01b8afa30c2...
> commit. Though adding this header file results the following compiler
> error, it seems related to that project.
> cppwinrt/winrt/base.h:676:27: error: constexpr variable
> 'guid_v<IGraphicsCaptureItemInterop>' must be initialized by a constant expression

No problem, yeah that looks like a C++ error related to the project. I added everything that was in the Windows SDK header so it doesn't seem like it's an issue on the Wine side.

[Rémi Bernon (＠rbernon)]

On Mon Apr 17 04:43:36 2023 +0000, Mohamad Al-Jaf wrote:
> Yeah, I tried that but it results in this error
>     tools/widl/widl -o include/windows.graphics.capture.interop.h -m32
> --nostdinc -Ldlls/* -Iinclude -Iinclude -D__WINESRC__ \
>       include/windows.graphics.capture.interop.idl
>     include/windows.h:38:1: error: Unable to open include file stdarg.h
>     make[1]: *** [Makefile:163589:
> include/windows.graphics.capture.interop.h] Error 1
> It doesn't seem worth debugging given how small the file is.

I don't see the same error with an IDL file but there's a couple of problems with widl and HMONITOR / void** types. It could be worked around the same way as for HANDLE, but I don't know if it's worth it?

[Rémi Bernon (＠rbernon)]

On Mon Apr 17 06:42:44 2023 +0000, Rémi Bernon wrote:
> I don't see the same error with an IDL file but there's a couple of
> problems with widl and HMONITOR / void** types. It could be worked
> around the same way as for HANDLE, but I don't know if it's worth it?

Actually only HMONITOR is an issue, and it could be added to the same widl case as HANDLE, then something like that would work:

```C
#ifdef __WIDL__
#pragma winrt ns_prefix
#endif

import "windows.ui.composition.idl";
import "windows.graphics.capture.idl";
import "sdkddkver.h";

cpp_quote("#if 0")
typedef HANDLE HMONITOR;
cpp_quote("#endif /* 0 */")

[
    uuid(3628e81b-3cac-4c60-b7f4-23ce0e0c3356)
]
interface IGraphicsCaptureItemInterop : IUnknown
{
    HRESULT CreateForWindow([in] HWND window, [in] REFIID iid, [out, iid_is(iid)] void **result);
    HRESULT CreateForMonitor([in] HMONITOR monitor, [in] REFIID iid, [out, iid_is(iid)] void **result);
}
```