gdi32: Support saving EMR_EXTESCAPE record in spool file.

dlls/gdi32/dc.c

@@ -655,8 +655,17 @@ INT WINAPI Escape( HDC hdc, INT escape, INT in_count, const char *in_data, void
 INT WINAPI ExtEscape( HDC hdc, INT escape, INT input_size, const char *input,
                       INT output_size, char *output )
 {
+    struct print *print;
+    DC_ATTR *dc_attr;
+
     if (is_meta_dc( hdc ))
         return METADC_ExtEscape( hdc, escape, input_size, input, output_size, output );
+    if (!(dc_attr = get_dc_attr( hdc ))) return 0;
+    if ((print = get_dc_print( dc_attr )) && dc_attr->emf)
+    {
+        int ret = EMFDC_ExtEscape( dc_attr, escape, input_size, input, output_size, output );
+        if (ret) return ret;
+    }
     return NtGdiExtEscape( hdc, NULL, 0, escape, input_size, input, output_size, output );
 }
 

dlls/gdi32/emfdc.c

@@ -1167,6 +1167,38 @@ BOOL EMFDC_PolyDraw( DC_ATTR *dc_attr, const POINT *pts, const BYTE *types, DWOR
     return ret;
 }
 
+INT EMFDC_ExtEscape( DC_ATTR *dc_attr, INT escape, INT input_size, const char *input,
+                      INT output_size, char *output)
+{
+    struct EMREXTESCAPE
+    {
+        EMR emr;
+        DWORD escape;
+        DWORD size;
+        BYTE data[1];
+    } *emr;
+    size_t size;
+
+    if (escape == QUERYESCSUPPORT) return 0;
+
+    size = FIELD_OFFSET( struct EMREXTESCAPE, data[input_size] );
+    size = (size + 3) & ~3;
+    if (!(emr = HeapAlloc( GetProcessHeap(), 0, size ))) return 0;
+
+    emr->emr.iType = EMR_EXTESCAPE;
+    emr->emr.nSize = size;
+    emr->escape = escape;
+    emr->size = input_size;
+    memcpy(emr->data, input, input_size);
+    emfdc_record( get_dc_emf( dc_attr ), &emr->emr );
+    HeapFree( GetProcessHeap(), 0, emr );
+    if (output_size && output) return 0;
+
+    if (escape == PASSTHROUGH || escape == POSTSCRIPT_PASSTHROUGH)
+        input_size -= sizeof(WORD);
+    return input_size ? input_size : 1;
+}
+
 BOOL EMFDC_ExtFloodFill( DC_ATTR *dc_attr, INT x, INT y, COLORREF color, UINT fill_type )
 {
     EMREXTFLOODFILL emr;

dlls/gdi32/gdi_private.h

@@ -187,6 +187,8 @@ extern BOOL EMFDC_Ellipse( DC_ATTR *dc_attr, INT left, INT top, INT right,
 extern BOOL EMFDC_EndPath( DC_ATTR *dc_attr ) DECLSPEC_HIDDEN;
 extern BOOL EMFDC_ExcludeClipRect( DC_ATTR *dc_attr, INT left, INT top, INT right,
                                    INT bottom ) DECLSPEC_HIDDEN;
+extern INT  EMFDC_ExtEscape( DC_ATTR *dc_attr, INT escape, INT input_size, const char *input,
+                             INT output_size, char *output) DECLSPEC_HIDDEN;
 extern BOOL EMFDC_ExtFloodFill( DC_ATTR *dc_attr, INT x, INT y, COLORREF color,
                                 UINT fill_type ) DECLSPEC_HIDDEN;
 extern BOOL EMFDC_ExtSelectClipRgn( DC_ATTR *dc_attr, HRGN hrgn, INT mode ) DECLSPEC_HIDDEN;