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