reactos/modules/rostests/apitests/user32/ScrollBarWndExtra.c

62 lines
2.1 KiB
C

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