DDraw: Fix IDirectDrawSurfaceImpl_SetColorKey to also change surface_desc.

[Günther Brammer]

IDirectDrawSurfaceImpl_GetColorKey uses surface_desc, so SetColorKey
should modify that. This fixes Bug 5730: Baldur's Gate uses the result
of GetColorKey as the color to use for the transparent background of
it's sprites.

---
 dlls/ddraw/surface.c |   52 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 52 insertions(+), 0 deletions(-)

diff --git a/dlls/ddraw/surface.c b/dlls/ddraw/surface.c
index 4e54949..4d1e041 100644
--- a/dlls/ddraw/surface.c
+++ b/dlls/ddraw/surface.c
@@ -2056,6 +2056,58 @@ IDirectDrawSurfaceImpl_SetColorKey(IDirectDrawSurface7 *iface,
     HRESULT hr;
     TRACE("(%p)->(%x,%p)\n", This, Flags, CKey);
 
+    if (CKey)
+    {
+        switch (Flags & ~DDCKEY_COLORSPACE)
+        {
+        case DDCKEY_DESTBLT:
+            This->surface_desc.ddckCKDestBlt = *CKey;
+            This->surface_desc.dwFlags |= DDSD_CKDESTBLT;
+            break;
+
+        case DDCKEY_DESTOVERLAY:
+            This->surface_desc.u3.ddckCKDestOverlay = *CKey;
+            This->surface_desc.dwFlags |= DDSD_CKDESTOVERLAY;
+            break;
+
+        case DDCKEY_SRCOVERLAY:
+            This->surface_desc.ddckCKSrcOverlay = *CKey;
+            This->surface_desc.dwFlags |= DDSD_CKSRCOVERLAY;
+            break;
+
+        case DDCKEY_SRCBLT:
+            This->surface_desc.ddckCKSrcBlt = *CKey;
+            This->surface_desc.dwFlags |= DDSD_CKSRCBLT;
+            break;
+
+        default:
+            return DDERR_INVALIDPARAMS;
+        }
+    }
+    else
+    {
+        switch (Flags & ~DDCKEY_COLORSPACE)
+        {
+        case DDCKEY_DESTBLT:
+            This->surface_desc.dwFlags &= ~DDSD_CKDESTBLT;
+            break;
+
+        case DDCKEY_DESTOVERLAY:
+            This->surface_desc.dwFlags &= ~DDSD_CKDESTOVERLAY;
+            break;
+
+        case DDCKEY_SRCOVERLAY:
+            This->surface_desc.dwFlags &= ~DDSD_CKSRCOVERLAY;
+            break;
+        
+        case DDCKEY_SRCBLT:
+            This->surface_desc.dwFlags &= ~DDSD_CKSRCBLT;
+            break;
+
+        default:
+            return DDERR_INVALIDPARAMS;
+        }
+    }
     for(surf = This->first_complex; surf; surf = surf->next_complex)
     {
         hr = IWineD3DSurface_SetColorKey(surf->WineD3DSurface,
-- 
1.4.4.1