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73 lines
2 KiB
C
73 lines
2 KiB
C
/*
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* PROJECT: ReactOS api tests
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* LICENSE: GPL - See COPYING in the top level directory
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* PURPOSE: Test for ScrollDC
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* PROGRAMMERS: Timo Kreuzer
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*/
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#include <stdio.h>
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#include <wine/test.h>
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#include <windows.h>
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void Test_ScrollDC()
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{
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HWND hWnd, hWnd2;
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HDC hDC;
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HRGN hrgn;
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RECT rcClip;
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int iResult;
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/* Create a window */
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hWnd = CreateWindowW(L"BUTTON", L"TestWindow", WS_OVERLAPPEDWINDOW | WS_VISIBLE,
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100, 100, 100, 100,
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NULL, NULL, 0, 0);
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UpdateWindow(hWnd);
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hDC = GetDC(hWnd);
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/* Test that no update region is there */
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hrgn = CreateRectRgn(0,0,0,0);
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iResult = GetUpdateRgn(hWnd, hrgn, FALSE);
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ok (iResult == NULLREGION, "\n");
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/* Test normal scrolling */
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ok(ScrollDC(hDC, 0, 0, NULL, NULL, hrgn, NULL) == TRUE, "\n");
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/* Scroll with invalid update region */
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DeleteObject(hrgn);
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ok(ScrollDC(hDC, 50, 0, NULL, NULL, hrgn, NULL) == FALSE, "\n");
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hrgn = CreateRectRgn(0,0,0,0);
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ok(GetUpdateRgn(hWnd, hrgn, FALSE) == NULLREGION, "\n");
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/* Scroll with invalid update rect pointer */
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ok(ScrollDC(hDC, 50, 0, NULL, NULL, NULL, (PRECT)1) == 0, "\n");
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ok(GetUpdateRgn(hWnd, hrgn, FALSE) == NULLREGION, "\n");
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/* Scroll with a clip rect */
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rcClip.left = 50; rcClip.top = 0; rcClip.right = 100; rcClip.bottom = 100;
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ok(ScrollDC(hDC, 50, 0, NULL, &rcClip, hrgn, NULL) == TRUE, "\n");
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ok(GetUpdateRgn(hWnd, hrgn, FALSE) == NULLREGION, "\n");
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/* Scroll with a clip rect */
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rcClip.left = 50; rcClip.top = 0; rcClip.right = 100; rcClip.bottom = 100;
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ok(ScrollDC(hDC, 50, 50, NULL, &rcClip, hrgn, NULL) == TRUE, "\n");
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ok(GetUpdateRgn(hWnd, hrgn, FALSE) == NULLREGION, "\n");
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/* Overlap with another window */
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hWnd2 = CreateWindowW(L"BUTTON", L"TestWindow", WS_OVERLAPPEDWINDOW | WS_VISIBLE,
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30, 160, 100, 100,
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NULL, NULL, 0, 0);
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UpdateWindow(hWnd2);
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/* Cleanup */
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ReleaseDC(hWnd, hDC);
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DestroyWindow(hWnd);
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DestroyWindow(hWnd2);
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}
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START_TEST(ScrollDC)
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{
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Test_ScrollDC();
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}
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