From: James Tabor <james.tabor@reactos.org>
Date: Mon, 3 Jun 2019 20:49:14 +0000 (-0500)
Subject: [GDI32] Meta File Fix Ups
X-Git-Tag: 0.4.14-dev~882
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=9f57320175fecbf3ea09f6a068c41642e1fc4d8b;ds=inline

[GDI32] Meta File Fix Ups

Remove pointer hack. Safer since using wines Enhanced Meta headers with
unknown wine magic information.
---

diff --git a/win32ss/gdi/gdi32/objects/metafile.c b/win32ss/gdi/gdi32/objects/metafile.c
index e1a51fb69f4..42bd22ec93c 100644
--- a/win32ss/gdi/gdi32/objects/metafile.c
+++ b/win32ss/gdi/gdi32/objects/metafile.c
@@ -139,16 +139,22 @@ GdiCreateLocalMetaFilePict(HANDLE hmo)
     {
         static const WCHAR szDisplayW[] = { 'D','I','S','P','L','A','Y','\0' };
         HENHMETAFILE hEMF;
-        PENHMETAHEADER pemh = (PENHMETAHEADER)Buffer;
-
-        pInfo->mm   = MM_ANISOTROPIC;
-        pInfo->xExt = pemh->rclFrame.right   - pemh->rclFrame.left; // Width
-        pInfo->yExt = pemh->rclFrame.bottom  - pemh->rclFrame.top;  // Height
+        ENHMETAHEADER emh;
 
         hEMF = SetEnhMetaFileBits(nSize, Buffer);
         if (hEMF == NULL)
             goto Exit;
 
+        if (!GetEnhMetaFileHeader( hEMF, sizeof(emh), &emh ))
+        {
+            DeleteEnhMetaFile(hEMF);
+            goto Exit;
+        }
+
+        pInfo->mm   = MM_ANISOTROPIC; // wine uses MM_ISOTROPIC.
+        pInfo->xExt = emh.rclFrame.right   - emh.rclFrame.left; // Width
+        pInfo->yExt = emh.rclFrame.bottom  - emh.rclFrame.top;  // Height
+
         hDC = CreateDCW(szDisplayW, NULL, NULL, NULL);
         if (hDC)
         {