modules/rostests/apitests/user32/RedrawWindow.c

   1 /*
   2  * PROJECT:     ReactOS API tests
   3  * LICENSE:     LGPL-2.1+ (https://spdx.org/licenses/LGPL-2.1+)
   4  * PURPOSE:     Test for RedrawWindow
   5  * COPYRIGHT:   Copyright 2018 Thomas Faber <thomas.faber@reactos.org>
   6  */
   7
   8 #include "precomp.h"
   9
  10 static DWORD dwThreadId;
  11 static BOOL got_paint;
  12
  13 static
  14 LRESULT
  15 CALLBACK
  16 WndProc(
  17     _In_ HWND hWnd,
  18     _In_ UINT message,
  19     _In_ WPARAM wParam,
  20     _In_ LPARAM lParam)
  21 {
  22     ok(GetCurrentThreadId() == dwThreadId, "Thread 0x%lx instead of 0x%lx\n", GetCurrentThreadId(), dwThreadId);
  23     if (message == WM_PAINT)
  24     {
  25         got_paint = TRUE;
  26     }
  27     return DefWindowProcW(hWnd, message, wParam, lParam);
  28 }
  29
  30
  31 START_TEST(RedrawWindow)
  32 {
  33     HWND hWnd;
  34     MSG msg;
  35     HRGN hRgn;
  36     BOOL ret;
  37     int i;
  38
  39     SetCursorPos(0,0);
  40
  41     dwThreadId = GetCurrentThreadId();
  42     RegisterSimpleClass(WndProc, L"CreateTest");
  43
  44     hWnd = CreateWindowExW(0, L"CreateTest", NULL, 0,  10, 10, 20, 20,  NULL, NULL, 0, NULL);
  45     ok(hWnd != NULL, "CreateWindow failed\n");
  46
  47     ShowWindow(hWnd, SW_SHOW);
  48
  49     while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE ))
  50     {
  51         DispatchMessageA( &msg );
  52     }
  53
  54     ok(got_paint == TRUE, "Did not process WM_PAINT message\n");
  55     got_paint = FALSE;
  56
  57     hRgn = CreateRectRgn(0, 0, 1, 1);
  58     ok(hRgn != NULL, "CreateRectRgn failed\n");
  59     ret = RedrawWindow(hWnd, NULL, hRgn, RDW_INTERNALPAINT | RDW_INVALIDATE);
  60     ok(ret == TRUE, "RedrawWindow failed\n");
  61
  62     i = 0;
  63     while (PeekMessage( &msg, 0, 0, 0, PM_REMOVE ))
  64     {
  65         RECORD_MESSAGE(1, msg.message, POST, 0, 0);
  66         if (msg.message == WM_PAINT)
  67         {
  68             i++;
  69             if (i == 10)
  70             {
  71                 ok(got_paint == FALSE, "Received unexpected WM_PAINT message\n");
  72             }
  73         }
  74         if (msg.message != WM_PAINT || i >= 10)
  75         {
  76             DispatchMessageA( &msg );
  77         }
  78     }
  79
  80     ok(i == 10, "Received %d WM_PAINT messages\n", i);
  81     ok(got_paint == TRUE, "Did not process WM_PAINT message\n");
  82
  83     TRACE_CACHE();
  84
  85     DeleteObject(hRgn);
  86     DestroyWindow(hWnd);
  87 }