[PATCH 2/6] user32: Implement WCA_CLOAKED in GetWindowCompositionAttribute.

[Gabriel Ivăncescu]

Signed-off-by: Gabriel Ivăncescu <gabrielopcode at gmail.com>
---
 dlls/user32/user32.spec |  1 +
 dlls/user32/win.c       | 43 +++++++++++++++++++++++++++++++++++++++++
 server/protocol.def     |  8 ++++++++
 server/window.c         | 26 +++++++++++++++++++++++++
 4 files changed, 78 insertions(+)

diff --git a/dlls/user32/user32.spec b/dlls/user32/user32.spec
index 8051ae3..1d87065 100644
--- a/dlls/user32/user32.spec
+++ b/dlls/user32/user32.spec
@@ -400,6 +400,7 @@
 @ stdcall GetUserObjectSecurity (long ptr ptr long ptr)
 # @ stub GetWinStationInfo
 @ stdcall GetWindow(long long)
+@ stdcall GetWindowCompositionAttribute(ptr ptr)
 @ stdcall GetWindowContextHelpId(long)
 @ stdcall GetWindowDC(long)
 @ stdcall GetWindowDisplayAffinity(long ptr)
diff --git a/dlls/user32/win.c b/dlls/user32/win.c
index 9840a76..6725c14 100644
--- a/dlls/user32/win.c
+++ b/dlls/user32/win.c
@@ -4247,6 +4247,49 @@ BOOL WINAPI SetWindowDisplayAffinity(HWND hwnd, DWORD affinity)
     return FALSE;
 }
 
+/**********************************************************************
+ *              GetWindowCompositionAttribute (USER32.@)
+ */
+BOOL WINAPI GetWindowCompositionAttribute(HWND hwnd, const struct WINCOMPATTRDATA *data)
+{
+    TRACE("(%p, %p)\n", hwnd, data);
+
+    if (!data || !data->pData)
+    {
+        SetLastError(ERROR_NOACCESS);
+        return FALSE;
+    }
+    if (!hwnd || is_broadcast(hwnd))
+    {
+        SetLastError(ERROR_INVALID_HANDLE);
+        return FALSE;
+    }
+
+    switch (data->attribute)
+    {
+    case WCA_CLOAKED:
+        if (data->dataSize < sizeof(DWORD))
+        {
+            SetLastError( ERROR_INSUFFICIENT_BUFFER );
+            return FALSE;
+        }
+        SERVER_START_REQ( get_window_cloaked )
+        {
+            req->handle = wine_server_user_handle( hwnd );
+            if (wine_server_call_err( req )) return FALSE;
+            *(DWORD*)(data->pData) = reply->cloaked;
+        }
+        SERVER_END_REQ;
+        break;
+
+    default:
+        FIXME("unimplemented attribute %d, size %u, for hwnd %p.\n", data->attribute, data->dataSize, hwnd);
+        SetLastError( ERROR_CALL_NOT_IMPLEMENTED );
+        return FALSE;
+    }
+    return TRUE;
+}
+
 /**********************************************************************
  *              SetWindowCompositionAttribute (USER32.@)
  */
diff --git a/server/protocol.def b/server/protocol.def
index d96d2e7..1bb4dcb 100644
--- a/server/protocol.def
+++ b/server/protocol.def
@@ -2301,6 +2301,14 @@ enum message_type
 #define SET_WIN_UNICODE   0x40
 
 
+/* Get the window's cloaked attribute */
+ at REQ(get_window_cloaked)
+    user_handle_t  handle;        /* handle to the window */
+ at REPLY
+    unsigned int   cloaked;       /* cloaked attribute (DMW_CLOAKED_*) */
+ at END
+
+
 /* Set the window's cloaked attribute */
 @REQ(set_window_cloaked)
     user_handle_t  handle;        /* handle to the window */
diff --git a/server/window.c b/server/window.c
index e6fc90c..356995a 100644
--- a/server/window.c
+++ b/server/window.c
@@ -38,6 +38,7 @@
 #include "process.h"
 #include "user.h"
 #include "unicode.h"
+#include "dwmapi.h"
 
 /* a window property */
 struct property
@@ -2172,6 +2173,31 @@ DECL_HANDLER(set_window_info)
 }
 
 
+/* get the window's cloaked attribute as DWM_CLOAKED_* value */
+DECL_HANDLER(get_window_cloaked)
+{
+    struct window *win = get_window( req->handle );
+    unsigned int cloaked = 0;
+
+    if (!win)
+    {
+        set_error( STATUS_INVALID_HANDLE );
+        return;
+    }
+    if (!is_desktop_window( win->parent ))
+    {
+        while (!is_desktop_window( win->parent ))
+            win = win->parent;
+        cloaked |= DWM_CLOAKED_INHERITED;
+    }
+
+    if (win->is_cloaked) cloaked |= DWM_CLOAKED_APP;
+    else cloaked = 0;
+
+    reply->cloaked = cloaked;
+}
+
+
 /* set the window's cloaked attribute */
 DECL_HANDLER(set_window_cloaked)
 {
-- 
2.21.0