dlls/gdi/tests/dc.c

   1 /*
   2  * Unit tests for dc functions
   3  *
   4  * Copyright (c) 2005 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <assert.h>
  22 #include <stdio.h>
  23 #include <math.h>
  24
  25 #include "wine/test.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winuser.h"
  29 #include "winerror.h"
  30
  31
  32 void test_savedc(void)
  33 {
  34     HDC hdc = CreateDCA("DISPLAY", NULL, NULL, NULL);
  35     int ret;
  36
  37     ok(hdc != NULL, "CreateDC rets %p\n", hdc);
  38
  39     ret = SaveDC(hdc);
  40     ok(ret == 1, "ret = %d\n", ret);
  41     ret = SaveDC(hdc);
  42     ok(ret == 2, "ret = %d\n", ret);
  43     ret = SaveDC(hdc);
  44     ok(ret == 3, "ret = %d\n", ret);
  45     ret = RestoreDC(hdc, -1);
  46     ok(ret, "ret = %d\n", ret);
  47     ret = SaveDC(hdc);
  48     ok(ret == 3, "ret = %d\n", ret);
  49     ret = RestoreDC(hdc, 1);
  50     ok(ret, "ret = %d\n", ret);
  51     ret = SaveDC(hdc);
  52     ok(ret == 1, "ret = %d\n", ret);
  53     ret = SaveDC(hdc);
  54     ok(ret == 2, "ret = %d\n", ret);
  55     ret = SaveDC(hdc);
  56     ok(ret == 3, "ret = %d\n", ret);
  57     ret = RestoreDC(hdc, -2);
  58     ok(ret, "ret = %d\n", ret);
  59     ret = SaveDC(hdc);
  60     ok(ret == 2, "ret = %d\n", ret);
  61     ret = RestoreDC(hdc, -2);
  62     ok(ret, "ret = %d\n", ret);
  63     ret = SaveDC(hdc);
  64     ok(ret == 1, "ret = %d\n", ret);
  65     ret = SaveDC(hdc);
  66     ok(ret == 2, "ret = %d\n", ret);
  67     ret = RestoreDC(hdc, -4);
  68     ok(!ret, "ret = %d\n", ret);
  69     ret = RestoreDC(hdc, 3);
  70     ok(!ret, "ret = %d\n", ret);
  71
  72     /* Under win98 the following two succeed and both clear the save stack
  73     ret = RestoreDC(hdc, -3);
  74     ok(!ret, "ret = %d\n", ret);
  75     ret = RestoreDC(hdc, 0);
  76     ok(!ret, "ret = %d\n", ret);
  77     */
  78
  79     ret = RestoreDC(hdc, 1);
  80     ok(ret, "ret = %d\n", ret);
  81
  82     DeleteDC(hdc);
  83 }
  84
  85 START_TEST(dc)
  86 {
  87     test_savedc();
  88 }