gdi32: Add support for pushing a font driver on the DC driver stack.

dlls/gdi32/dc.c

@@ -154,6 +154,12 @@ DC *alloc_dc_ptr( WORD magic )
         return NULL;
     }
     dc->nulldrv.hdc = dc->hSelf;
+
+    if (font_driver && !font_driver->pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
+    {
+        free_dc_ptr( dc );
+        return NULL;
+    }
     return dc;
 }
 

dlls/gdi32/driver.c

@@ -49,6 +49,8 @@ struct graphics_driver
 static struct list drivers = LIST_INIT( drivers );
 static struct graphics_driver *display_driver;
 
+const struct gdi_dc_funcs *font_driver = NULL;
+
 static CRITICAL_SECTION driver_section;
 static CRITICAL_SECTION_DEBUG critsect_debug =
 {

dlls/gdi32/gdi_private.h

@@ -270,6 +270,7 @@ extern DWORD blend_bitmapinfo( const BITMAPINFO *src_info, void *src_bits, struc
 /* driver.c */
 extern const struct gdi_dc_funcs null_driver DECLSPEC_HIDDEN;
 extern const struct gdi_dc_funcs dib_driver DECLSPEC_HIDDEN;
+extern const struct gdi_dc_funcs *font_driver DECLSPEC_HIDDEN;
 extern const struct gdi_dc_funcs *DRIVER_load_driver( LPCWSTR name ) DECLSPEC_HIDDEN;
 extern BOOL DRIVER_GetDriverName( LPCWSTR device, LPWSTR driver, DWORD size ) DECLSPEC_HIDDEN;