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62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/*
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* PROJECT: ReactOS API tests
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* LICENSE: LGPL-2.1+ (https://spdx.org/licenses/LGPL-2.1+)
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* PURPOSE: Test for ScrollBar cbWndExtra
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* COPYRIGHT: Copyright 2019 Mark Jansen <mark.jansen@reactos.org>
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*
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* Why do we need this test?
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* Ask the authors of Civilization II...
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*/
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#include "precomp.h"
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#define BUILTIN_SCROLLBAR "Scrollbar"
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#define CUSTOM_SCROLLBAR "MSScrollBarClass"
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START_TEST(ScrollBarWndExtra)
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{
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HWND hScrollBar;
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HWND hScrollBarImpersonator;
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WNDCLASSA WndClass;
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ATOM ClassAtom;
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LONG_PTR dummyData = (LONG_PTR)0xbeefbeefbeefbeefULL, result;
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WNDPROC lpfnWndProc;
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DWORD dwExtra;
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hScrollBar = CreateWindowExA(0, BUILTIN_SCROLLBAR, "", WS_POPUP,
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20, 20, 120, 120, NULL, 0, GetModuleHandle(NULL), 0);
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ok(hScrollBar != NULL, "Scrollbar creation failed (%lu)\n", GetLastError());
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lpfnWndProc = (WNDPROC)GetWindowLongPtrA(hScrollBar, GWL_WNDPROC);
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dwExtra = GetClassLongPtrA(hScrollBar, GCL_CBWNDEXTRA);
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ZeroMemory(&WndClass, sizeof(WndClass));
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WndClass.style = CS_DBLCLKS | CS_PARENTDC | CS_HREDRAW | CS_VREDRAW;
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WndClass.lpfnWndProc = lpfnWndProc;
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WndClass.cbWndExtra = dwExtra + sizeof(LONG_PTR);
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WndClass.hInstance = GetModuleHandle(NULL);
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WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
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WndClass.hbrBackground = GetStockObject(LTGRAY_BRUSH);
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WndClass.lpszClassName = CUSTOM_SCROLLBAR;
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ClassAtom = RegisterClassA(&WndClass);
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ok(ClassAtom != 0, "RegisterClassA failed (%lu)\n", GetLastError());
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DestroyWindow(hScrollBar);
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hScrollBarImpersonator = CreateWindowExA(0, CUSTOM_SCROLLBAR, "", WS_POPUP,
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20, 20, 120, 120, NULL, 0, GetModuleHandle(NULL), 0);
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ok(hScrollBarImpersonator != NULL, "Scrollbar creation failed (%lu)\n", GetLastError());
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SetWindowLongPtrA(hScrollBarImpersonator, dwExtra, dummyData);
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result = GetWindowLongPtrA(hScrollBarImpersonator, dwExtra);
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ok(result == dummyData, "Invalid dummyData\n");
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DestroyWindow(hScrollBarImpersonator);
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UnregisterClassA(CUSTOM_SCROLLBAR, GetModuleHandle(NULL));
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}
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