rostests/apitests/gdi32/CreateCompatibleDC.c

   1 /*
   2  * PROJECT:         ReactOS api tests
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * PURPOSE:         Test for CreateCompatibleDC
   5  * PROGRAMMERS:     Timo Kreuzer
   6  */
   7
   8 #include <apitest.h>
   9
  10 #include <wingdi.h>
  11 #include <winuser.h>
  12
  13 void Test_CreateCompatibleDC()
  14 {
  15         HDC hdcScreen, hOldDC, hdc, hdc2;
  16         HPEN hOldPen;
  17         COLORREF color;
  18
  19         /* Get screen DC */
  20         hdcScreen = GetDC(NULL);
  21
  22         /* Test NULL DC handle */
  23         SetLastError(ERROR_SUCCESS);
  24         hdc = CreateCompatibleDC(NULL);
  25         ok(hdc != NULL, "CreateCompatibleDC(NULL) failed\n");
  26         ok(GetLastError() == ERROR_SUCCESS, "GetLastError() == %ld\n", GetLastError());
  27         if(hdc) DeleteDC(hdc);
  28
  29         /* Test invalid DC handle */
  30         SetLastError(ERROR_SUCCESS);
  31         hdc = CreateCompatibleDC((HDC)0x123456);
  32         ok(hdc == NULL, "Expected NULL, got %p\n", hdc);
  33         ok(GetLastError() == ERROR_SUCCESS, "GetLastError() == %ld\n", GetLastError());
  34         if(hdc) DeleteDC(hdc);
  35
  36         hdc = CreateCompatibleDC(hdcScreen);
  37         ok(hdc != NULL, "CreateCompatibleDC failed\n");
  38
  39         // Test if first selected pen is BLACK_PEN (? or same as screen DC's pen?)
  40         hOldPen = SelectObject(hdc, GetStockObject(DC_PEN));
  41         ok (hOldPen == GetStockObject(BLACK_PEN), "hOldPen == %p\n", hOldPen);
  42         hOldPen = SelectObject(hdc, GetStockObject(BLACK_PEN));
  43         ok (hOldPen == GetStockObject(DC_PEN), "hOldPen == %p\n", hOldPen);
  44
  45         /* Test for the starting Color == RGB(0,0,0) */
  46         color = SetDCPenColor(hdc, RGB(1,2,3));
  47         ok(color == RGB(0,0,0), "color == %lx\n", color);
  48
  49         /* Check for reuse counter */
  50         hOldDC = hdc;
  51         DeleteDC(hdc);
  52         hdc = CreateCompatibleDC(hdcScreen);
  53         hdc2 = CreateCompatibleDC(hOldDC);
  54         ok(hdc2 == NULL, "Expected NULL, got %p\n", hdc);
  55         if (hdc2 != NULL) DeleteDC(hdc2);
  56
  57     /* Check map mode */
  58         hdc = CreateCompatibleDC(hdcScreen);
  59         SetMapMode(hdc, MM_ISOTROPIC);
  60         hdc2 = CreateCompatibleDC(hdc);
  61     ok(GetMapMode(hdc2) == MM_TEXT, "GetMapMode(hdc2)==%d\n", GetMapMode(hdc2));
  62
  63         /* cleanup */
  64         DeleteDC(hdc);
  65
  66         ReleaseDC(NULL, hdcScreen);
  67 }
  68
  69 START_TEST(CreateCompatibleDC)
  70 {
  71     Test_CreateCompatibleDC();
  72 }
  73