From e19711eebf112d620d8a440653602cec0f58f7c0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herm=C3=A8s=20B=C3=A9lusca-Ma=C3=AFto?=
 <hermes.belusca-maito@reactos.org>
Date: Sat, 12 Dec 2015 20:40:19 +0000
Subject: [PATCH] [CLIPBRD] Handle WM_PALETTECHANGED and WM_QUERYNEWPALETTE:
 realizes any palette found on the clipboard, if there is any, if it receives
 one of those messages.

svn path=/trunk/; revision=70329
---
 reactos/base/applications/clipbrd/clipbrd.c  | 24 ++++++++++
 reactos/base/applications/clipbrd/winutils.c | 50 ++++++++++++++++++++
 reactos/base/applications/clipbrd/winutils.h |  1 +
 3 files changed, 75 insertions(+)

diff --git a/reactos/base/applications/clipbrd/clipbrd.c b/reactos/base/applications/clipbrd/clipbrd.c
index 3a37c8df949..e7c79ea9eab 100644
--- a/reactos/base/applications/clipbrd/clipbrd.c
+++ b/reactos/base/applications/clipbrd/clipbrd.c
@@ -407,6 +407,30 @@ static LRESULT WINAPI MainWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lP
             break;
         }
 
+        case WM_QUERYNEWPALETTE:
+        {
+            if (RealizeClipboardPalette(hWnd) != GDI_ERROR)
+            {
+                InvalidateRect(hWnd, NULL, TRUE);
+                UpdateWindow(hWnd);
+                return TRUE;
+            }
+            return FALSE;
+        }
+
+        case WM_PALETTECHANGED:
+        {
+            if ((HWND)wParam != hWnd)
+            {
+                if (RealizeClipboardPalette(hWnd) != GDI_ERROR)
+                {
+                    InvalidateRect(hWnd, NULL, TRUE);
+                    UpdateWindow(hWnd);
+                }
+            }
+            break;
+        }
+
         default:
         {
             return DefWindowProc(hWnd, uMsg, wParam, lParam);
diff --git a/reactos/base/applications/clipbrd/winutils.c b/reactos/base/applications/clipbrd/winutils.c
index 0fc98bcf849..2196fd2c68f 100644
--- a/reactos/base/applications/clipbrd/winutils.c
+++ b/reactos/base/applications/clipbrd/winutils.c
@@ -156,3 +156,53 @@ void PlayEnhMetaFileFromClipboard(HDC hdc, const RECT *lpRect)
     hEmf = GetClipboardData(CF_ENHMETAFILE);
     PlayEnhMetaFile(hdc, hEmf, lpRect);
 }
+
+UINT RealizeClipboardPalette(HWND hWnd)
+{
+    HPALETTE hPalette;
+    HPALETTE hOldPalette;
+    UINT uResult;
+    HDC hDevContext;
+
+    if (!OpenClipboard(NULL))
+    {
+        return GDI_ERROR;
+    }
+
+    if (!IsClipboardFormatAvailable(CF_PALETTE))
+    {
+        CloseClipboard();
+        return GDI_ERROR;
+    }
+
+    hPalette = GetClipboardData(CF_PALETTE);
+    if (!hPalette)
+    {
+        CloseClipboard();
+        return GDI_ERROR;
+    }
+
+    hDevContext = GetDC(hWnd);
+    if (!hDevContext)
+    {
+        CloseClipboard();
+        return GDI_ERROR;
+    }
+
+    hOldPalette = SelectPalette(hDevContext, hPalette, FALSE);
+    if (!hOldPalette)
+    {
+        ReleaseDC(hWnd, hDevContext);
+        CloseClipboard();
+        return GDI_ERROR;
+    }
+
+    uResult = RealizePalette(hDevContext);
+
+    SelectPalette(hDevContext, hOldPalette, FALSE);
+    ReleaseDC(hWnd, hDevContext);
+
+    CloseClipboard();
+
+    PlayEnhMetaFile(hdc, hEmf, lpRect);
+}
diff --git a/reactos/base/applications/clipbrd/winutils.h b/reactos/base/applications/clipbrd/winutils.h
index 1dde2e015d3..ff7b5866960 100644
--- a/reactos/base/applications/clipbrd/winutils.h
+++ b/reactos/base/applications/clipbrd/winutils.h
@@ -15,3 +15,4 @@ void BitBltFromClipboard(HDC hdcDest, int nXDest, int nYDest, int nWidth, int nH
 void SetDIBitsToDeviceFromClipboard(UINT uFormat, HDC hdc, int XDest, int YDest, int XSrc, int YSrc, UINT uStartScan, UINT fuColorUse);
 void PlayMetaFileFromClipboard(HDC hdc, const RECT *lpRect);
 void PlayEnhMetaFileFromClipboard(HDC hdc, const RECT *lpRect);
+UINT RealizeClipboardPalette(HWND hWnd);