Added DIB/pixmap synchronization for {Get,Set}Pixel.

graphics/x11drv/graphics.c

diff --git a/graphics/x11drv/graphics.c b/graphics/x11drv/graphics.c
index 1ebd62d..a9edf8f 100644
--- a/graphics/x11drv/graphics.c
+++ b/graphics/x11drv/graphics.c
@@ -864,15 +864,18 @@
     x = dc->DCOrgX + INTERNAL_XWPTODP( dc, x, y );
     y = dc->DCOrgY + INTERNAL_YWPTODP( dc, x, y );
     pixel = X11DRV_PALETTE_ToPhysical( dc, color );
-    
+
+    /* Update the pixmap from the DIB section */
+    X11DRV_LockDIBSection(dc, DIB_Status_GdiMod, FALSE);
+
+    /* inefficient but simple... */
     TSXSetForeground( display, physDev->gc, pixel );
     TSXSetFunction( display, physDev->gc, GXcopy );
     TSXDrawPoint( display, physDev->drawable, physDev->gc, x, y );
 
-    /* inefficient but simple... */
+    /* Update the DIBSection from the pixmap */
+    X11DRV_UnlockDIBSection(dc, TRUE);
 
-    /* FIXME: the DIBSection pixel should be updated too */
-    
     return X11DRV_PALETTE_ToLogical(pixel);
 }
 
@@ -888,6 +891,9 @@
     int pixel;
     X11DRV_PDEVICE *physDev = (X11DRV_PDEVICE *)dc->physDev;
 
+    /* Update the pixmap from the DIB section */
+    X11DRV_LockDIBSection(dc, DIB_Status_GdiMod, FALSE);
+
     x = dc->DCOrgX + INTERNAL_XWPTODP( dc, x, y );
     y = dc->DCOrgY + INTERNAL_YWPTODP( dc, x, y );
     wine_tsx11_lock();
@@ -909,6 +915,10 @@
     pixel = XGetPixel( image, 0, 0 );
     XDestroyImage( image );
     wine_tsx11_unlock();
+
+    /* Update the DIBSection from the pixmap */
+    X11DRV_UnlockDIBSection(dc, FALSE);
+
     return X11DRV_PALETTE_ToLogical(pixel);
 }