dlls/user32/tests/scroll.c

   1 /*
   2  * Unit tests for scrollbar
   3  *
   4  * Copyright 2008 Lyutin Anatoly (Etersoft)
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <assert.h>
  22 #include <stdarg.h>
  23 #include <stdio.h>
  24 #include <windows.h>
  25
  26 #include "wine/test.h"
  27
  28 static HWND hScroll, hMainWnd;
  29 static BOOL bThemeActive = FALSE;
  30
  31 static LRESULT CALLBACK MyWndProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam )
  32 {
  33     switch(msg)
  34     {
  35
  36     case WM_CREATE:
  37     {
  38         hScroll = CreateWindowA( "SCROLLBAR", "", WS_CHILD | WS_VISIBLE, 0, 0, 120, 100, hWnd, (HMENU)100, GetModuleHandleA(0), 0 );
  39
  40         return 0;
  41     }
  42     case WM_DESTROY:
  43         PostQuitMessage(0);
  44         break;
  45     case WM_HSCROLL:
  46     case WM_VSCROLL:
  47         /* stop tracking */
  48         ReleaseCapture();
  49         return 0;
  50     default:
  51         return DefWindowProcA(hWnd, msg, wParam, lParam);
  52     }
  53     return 0;
  54 }
  55 static void scrollbar_test_track(void)
  56 {
  57     /* test that scrollbar tracking is terminated when
  58      * the control looses mouse capture */
  59     SendMessage( hScroll, WM_LBUTTONDOWN, 0, MAKELPARAM( 1, 1));
  60     /* a normal return from the sendmessage */
  61     /* not normal for instance by closing the windws */
  62     ok( IsWindow( hScroll), "Scrollbar has gone!\n");
  63 }
  64
  65 static void scrollbar_test1(void)
  66 {
  67     BOOL ret;
  68
  69     ret = EnableScrollBar( hScroll, SB_CTL, ESB_DISABLE_BOTH );
  70     ok( ret, "The scrollbar should be disabled.\n" );
  71     ok( !IsWindowEnabled( hScroll ), "The scrollbar window should be disabled.\n" );
  72
  73     ret = EnableScrollBar( hScroll, SB_CTL, ESB_ENABLE_BOTH );
  74     ok( ret, "The scrollbar should be enabled.\n" );
  75     ok( IsWindowEnabled( hScroll ), "The scrollbar window should be enabled.\n" );
  76
  77     /* test buttons separately */
  78     ret = EnableScrollBar( hScroll, SB_CTL, ESB_DISABLE_LTUP );
  79     ok( ret, "The scrollbar LTUP button should be disabled.\n" );
  80     ok( IsWindowEnabled( hScroll ), "The scrollbar window should be enabled.\n" );
  81     ret = EnableScrollBar( hScroll, SB_CTL, ESB_ENABLE_BOTH );
  82     ok( ret, "The scrollbar should be enabled.\n" );
  83     ok( IsWindowEnabled( hScroll ), "The scrollbar window should be enabled.\n" );
  84
  85     ret = EnableScrollBar( hScroll, SB_CTL, ESB_DISABLE_RTDN );
  86     ok( ret, "The scrollbar RTDN button should be disabled.\n" );
  87     ok( IsWindowEnabled( hScroll ), "The scrollbar window should be enabled.\n" );
  88     ret = EnableScrollBar( hScroll, SB_CTL, ESB_ENABLE_BOTH );
  89     ok( ret, "The scrollbar should be enabled.\n" );
  90     ok( IsWindowEnabled( hScroll ), "The scrollbar window should be enabled.\n" );
  91 }
  92
  93 static void scrollbar_test2(void)
  94 {
  95     int ret;
  96
  97     trace("The scrollbar is disabled.\n");
  98
  99     EnableWindow( hScroll, FALSE );
 100     ok( !IsWindowEnabled( hScroll ), "The scroll should be disabled.\n" );
 101
 102     ret = SetScrollPos( hScroll, SB_CTL, 30, TRUE);
 103     ok( !ret, "The position should not be set.\n" );
 104
 105     ret = GetScrollPos( hScroll, SB_CTL);
 106     ok( !ret, "The position should be equal to zero\n");
 107
 108     ret = SetScrollRange( hScroll, SB_CTL, 0, 100, TRUE );
 109     ok( ret, "The range should be set.\n" );
 110
 111     ret = SetScrollPos( hScroll, SB_CTL, 30, TRUE);
 112     ok( !ret , "The position should not be set.\n" );
 113
 114     ret = GetScrollPos( hScroll, SB_CTL);
 115     ok( ret == 30, "The position should be set!!!\n");
 116
 117     trace("The scrollbar is enabled.\n");
 118
 119     EnableWindow( hScroll, TRUE );
 120     ok( IsWindowEnabled( hScroll ), "The scroll should be enabled.\n" );
 121
 122     ret = SetScrollPos( hScroll, SB_CTL, 30, TRUE);
 123     ok( ret == 30, "The position should be set.\n" );
 124
 125     ret = GetScrollPos( hScroll, SB_CTL);
 126     ok( ret == 30, "The position should not be equal to zero\n");
 127
 128     ret = SetScrollRange( hScroll, SB_CTL, 0, 100, TRUE );
 129     ok( ret, "The range should be set.\n" );
 130
 131     ret = SetScrollPos( hScroll, SB_CTL, 30, TRUE);
 132     ok( ret == 30, "The position should be set.\n" );
 133
 134     ret = GetScrollPos( hScroll, SB_CTL);
 135     ok( ret == 30, "The position should not be equal to zero\n");
 136 }
 137
 138 static void scrollbar_test3(void)
 139 {
 140     BOOL    ret;
 141
 142     ret = ShowScrollBar( hScroll, SB_CTL, FALSE );
 143     ok( ret, "The ShowScrollBar() should not failed.\n" );
 144     ok( !IsWindowVisible( hScroll ), "The scrollbar window should not be visible\n" );
 145
 146     ret = ShowScrollBar( hScroll, SB_CTL, TRUE );
 147     ok( ret, "The ShowScrollBar() should not failed.\n" );
 148     ok( !IsWindowVisible( hScroll ), "The scrollbar window should be visible\n" );
 149
 150     ret = ShowScrollBar( NULL, SB_CTL, TRUE );
 151     ok( !ret, "The ShowScrollBar() should failed.\n" );
 152
 153 }
 154
 155 static void scrollbar_test4(void)
 156 {
 157     BOOL ret;
 158     SCROLLBARINFO sbi;
 159     RECT rect;
 160     BOOL (WINAPI *pGetScrollBarInfo)(HWND, LONG, LPSCROLLBARINFO);
 161
 162     pGetScrollBarInfo = (void*)GetProcAddress(GetModuleHandleA("user32.dll"), "GetScrollBarInfo");
 163     if (!pGetScrollBarInfo)
 164     {
 165         win_skip("GetScrollBarInfo is not available\n");
 166         return;
 167     }
 168
 169     /* Test GetScrollBarInfo to make sure it returns rcScrollBar in screen
 170      * coordinates. */
 171     sbi.cbSize = sizeof(sbi);
 172     ret = pGetScrollBarInfo( hScroll, OBJID_CLIENT, &sbi);
 173     ok( ret, "The GetScrollBarInfo() call should not fail.\n" );
 174     GetWindowRect( hScroll, &rect );
 175     ok( ret, "The GetWindowRect() call should not fail.\n" );
 176     ok( !(sbi.rgstate[0] & (STATE_SYSTEM_INVISIBLE|STATE_SYSTEM_OFFSCREEN)),
 177         "unexpected rgstate(0x%x)\n", sbi.rgstate[0]);
 178     ok( EqualRect(&rect, &sbi.rcScrollBar),
 179         "WindowRect(%d, %d, %d, %d) != rcScrollBar(%d, %d, %d, %d)\n",
 180         rect.top, rect.left, rect.bottom, rect.right,
 181         sbi.rcScrollBar.top, sbi.rcScrollBar.left,
 182         sbi.rcScrollBar.bottom, sbi.rcScrollBar.right );
 183
 184     /* Test windows horizontal and vertical scrollbar to make sure rcScrollBar
 185      * is still returned in screen coordinates by moving the window, and
 186      * making sure that it shifts the rcScrollBar value. */
 187     ShowWindow( hMainWnd, SW_SHOW );
 188     sbi.cbSize = sizeof(sbi);
 189     ret = pGetScrollBarInfo( hMainWnd, OBJID_HSCROLL, &sbi);
 190     ok( ret, "The GetScrollBarInfo() call should not fail.\n" );
 191     GetWindowRect( hMainWnd, &rect );
 192     ok( ret, "The GetWindowRect() call should not fail.\n" );
 193     MoveWindow( hMainWnd, rect.left+5, rect.top+5,
 194                 rect.right-rect.left, rect.bottom-rect.top, TRUE );
 195     rect = sbi.rcScrollBar;
 196     OffsetRect(&rect, 5, 5);
 197     ret = pGetScrollBarInfo( hMainWnd, OBJID_HSCROLL, &sbi);
 198     ok( ret, "The GetScrollBarInfo() call should not fail.\n" );
 199     ok( EqualRect(&rect, &sbi.rcScrollBar),
 200         "PreviousRect(%d, %d, %d, %d) != CurrentRect(%d, %d, %d, %d)\n",
 201         rect.top, rect.left, rect.bottom, rect.right,
 202         sbi.rcScrollBar.top, sbi.rcScrollBar.left,
 203         sbi.rcScrollBar.bottom, sbi.rcScrollBar.right );
 204
 205     sbi.cbSize = sizeof(sbi);
 206     ret = pGetScrollBarInfo( hMainWnd, OBJID_VSCROLL, &sbi);
 207     ok( ret, "The GetScrollBarInfo() call should not fail.\n" );
 208     GetWindowRect( hMainWnd, &rect );
 209     ok( ret, "The GetWindowRect() call should not fail.\n" );
 210     MoveWindow( hMainWnd, rect.left+5, rect.top+5,
 211                 rect.right-rect.left, rect.bottom-rect.top, TRUE );
 212     rect = sbi.rcScrollBar;
 213     OffsetRect(&rect, 5, 5);
 214     ret = pGetScrollBarInfo( hMainWnd, OBJID_VSCROLL, &sbi);
 215     ok( ret, "The GetScrollBarInfo() call should not fail.\n" );
 216     ok( EqualRect(&rect, &sbi.rcScrollBar),
 217         "PreviousRect(%d, %d, %d, %d) != CurrentRect(%d, %d, %d, %d)\n",
 218         rect.top, rect.left, rect.bottom, rect.right,
 219         sbi.rcScrollBar.top, sbi.rcScrollBar.left,
 220         sbi.rcScrollBar.bottom, sbi.rcScrollBar.right );
 221 }
 222
 223 /* some tests designed to show that Horizontal and Vertical
 224  * window scroll bar info are not created independently */
 225 static void scrollbar_test_default( DWORD style)
 226 {
 227     INT min, max, ret;
 228     DWORD winstyle;
 229     HWND hwnd;
 230     SCROLLINFO si = { sizeof( SCROLLINFO), SIF_TRACKPOS };
 231
 232     hwnd = CreateWindowExA( 0, "static", "", WS_POPUP | style,
 233                 0, 0, 10, 10, 0, 0, 0, NULL);
 234     assert( hwnd != 0);
 235
 236     ret = GetScrollRange( hwnd, SB_VERT, &min, &max);
 237     ok( ret ||
 238             broken( !ret) /* Win 9x/ME */ , "GetScrollRange failed.\n");
 239     /* range is 0,0 if there are no H or V scroll bars. 0,100 otherwise */
 240     if( !( style & ( WS_VSCROLL | WS_HSCROLL)))
 241         ok( min == 0 && max == 0,
 242                 "Scroll bar range is %d,%d. Expected 0,0. Style %08x\n", min, max, style);
 243     else
 244         ok(( min == 0 && max == 100) ||
 245                 broken( min == 0 && max == 0), /* Win 9x/ME */
 246                 "Scroll bar range is %d,%d. Expected 0,100. Style %08x\n", min, max, style);
 247     ret = GetScrollRange( hwnd, SB_HORZ, &min, &max);
 248     ok( ret ||
 249             broken( !ret) /* Win 9x/ME */ , "GetScrollRange failed.\n");
 250     /* range is 0,0 if there are no H or V scroll bars. 0,100 otherwise */
 251     if( !( style & ( WS_VSCROLL | WS_HSCROLL)))
 252         ok( min == 0 && max == 0,
 253                 "Scroll bar range is %d,%d. Expected 0,0. Style %08x\n", min, max, style);
 254     else
 255         ok(( min == 0 && max == 100) ||
 256                 broken( min == 0 && max == 0), /* Win 9x/ME */
 257                 "Scroll bar range is %d,%d. Expected 0,100. Style %08x\n", min, max, style);
 258     /* test GetScrollInfo, vist for vertical SB */
 259     ret = GetScrollInfo( hwnd, SB_VERT, &si);
 260     /* should fail if no H or V scroll bar styles are present. Succeed otherwise */
 261     if( !( style & ( WS_VSCROLL | WS_HSCROLL)))
 262         ok( !ret, "GetScrollInfo succeeded unexpectedly. Style is %08x\n", style);
 263     else
 264         ok( ret ||
 265                 broken( !ret), /* Win 9x/ME */
 266                 "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 267     /* Same for Horizontal SB */
 268     ret = GetScrollInfo( hwnd, SB_HORZ, &si);
 269     /* should fail if no H or V scroll bar styles are present. Succeed otherwise */
 270     if( !( style & ( WS_VSCROLL | WS_HSCROLL)))
 271         ok( !ret, "GetScrollInfo succeeded unexpectedly. Style is %08x\n", style);
 272     else
 273         ok( ret ||
 274                 broken( !ret), /* Win 9x/ME */
 275                 "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 276     /* now set the Vertical Scroll range to something that could be the default value it
 277      * already has */;
 278     ret = SetScrollRange( hwnd, SB_VERT, 0, 100, FALSE);
 279     ok( ret, "SetScrollRange failed.\n");
 280     /* and request the Horizontal range */
 281     ret = GetScrollRange( hwnd, SB_HORZ, &min, &max);
 282     ok( ret, "GetScrollRange failed.\n");
 283     /* now the range should be 0,100 in ALL cases */
 284     ok( min == 0 && max == 100,
 285             "Scroll bar range is %d,%d. Expected 0,100. Style %08x\n", min, max, style);
 286     /* See what is different now for GetScrollRange */
 287     ret = GetScrollInfo( hwnd, SB_HORZ, &si);
 288     /* should succeed in ALL cases */
 289     ok( ret, "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 290     ret = GetScrollInfo( hwnd, SB_VERT, &si);
 291     /* should succeed in ALL cases */
 292     ok( ret, "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 293     /* report the windows style */
 294     winstyle = GetWindowLongA( hwnd, GWL_STYLE );
 295     /* WS_VSCROLL added to the window style */
 296     if( !(style & WS_VSCROLL))
 297     {
 298         if (bThemeActive || style != WS_HSCROLL)
 299 todo_wine
 300             ok( (winstyle & (WS_HSCROLL|WS_VSCROLL)) == ( style | WS_VSCROLL),
 301                 "unexpected style change %08x/%08x\n", winstyle, style);
 302         else
 303             ok( (winstyle & (WS_HSCROLL|WS_VSCROLL)) == style,
 304                 "unexpected style change %08x/%08x\n", winstyle, style);
 305     }
 306     /* do the test again with H and V reversed.
 307      * Start with a clean window */
 308     DestroyWindow( hwnd);
 309     hwnd = CreateWindowExA( 0, "static", "", WS_POPUP | style,
 310                 0, 0, 10, 10, 0, 0, 0, NULL);
 311     assert( hwnd != 0);
 312     /* Set Horizontal Scroll range to something that could be the default value it
 313      * already has */;
 314     ret = SetScrollRange( hwnd, SB_HORZ, 0, 100, FALSE);
 315     ok( ret, "SetScrollRange failed.\n");
 316     /* and request the Vertical range */
 317     ret = GetScrollRange( hwnd, SB_VERT, &min, &max);
 318     ok( ret, "GetScrollRange failed.\n");
 319     /* now the range should be 0,100 in ALL cases */
 320     ok( min == 0 && max == 100,
 321             "Scroll bar range is %d,%d. Expected 0,100. Style %08x\n", min, max, style);
 322     /* See what is different now for GetScrollRange */
 323     ret = GetScrollInfo( hwnd, SB_HORZ, &si);
 324     /* should succeed in ALL cases */
 325     ok( ret, "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 326     ret = GetScrollInfo( hwnd, SB_VERT, &si);
 327     /* should succeed in ALL cases */
 328     ok( ret, "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 329     /* report the windows style */
 330     winstyle = GetWindowLongA( hwnd, GWL_STYLE );
 331     /* WS_HSCROLL added to the window style */
 332     if( !(style & WS_HSCROLL))
 333     {
 334         if (bThemeActive || style != WS_VSCROLL)
 335 todo_wine
 336             ok( (winstyle & (WS_HSCROLL|WS_VSCROLL)) == ( style | WS_HSCROLL),
 337                 "unexpected style change %08x/%08x\n", winstyle, style);
 338         else
 339             ok( (winstyle & (WS_HSCROLL|WS_VSCROLL)) == style,
 340                 "unexpected style change %08x/%08x\n", winstyle, style);
 341     }
 342     /* Slightly change the test to use SetScrollInfo
 343      * Start with a clean window */
 344     DestroyWindow( hwnd);
 345     hwnd = CreateWindowExA( 0, "static", "", WS_POPUP | style,
 346                 0, 0, 10, 10, 0, 0, 0, NULL);
 347     assert( hwnd != 0);
 348     /* set Horizontal position with SetScrollInfo */
 349     si.nPos = 0;
 350     si.nMin = 11;
 351     si.nMax = 22;
 352     si.fMask |= SIF_RANGE;
 353     ret = SetScrollInfo( hwnd, SB_HORZ, &si, FALSE);
 354     ok( ret, "SetScrollInfo failed. Style is %08x\n", style);
 355     /* and request the Vertical range */
 356     ret = GetScrollRange( hwnd, SB_VERT, &min, &max);
 357     ok( ret, "GetScrollRange failed.\n");
 358     /* now the range should be 0,100 in ALL cases */
 359     ok( min == 0 && max == 100,
 360             "Scroll bar range is %d,%d. Expected 0,100. Style %08x\n", min, max, style);
 361     /* See what is different now for GetScrollRange */
 362     ret = GetScrollInfo( hwnd, SB_HORZ, &si);
 363     /* should succeed in ALL cases */
 364     ok( ret, "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 365     ret = GetScrollInfo( hwnd, SB_VERT, &si);
 366     /* should succeed in ALL cases */
 367     ok( ret, "GetScrollInfo failed unexpectedly. Style is %08x\n", style);
 368     /* also test if the window scroll bars are enabled */
 369     ret = EnableScrollBar( hwnd, SB_VERT, ESB_ENABLE_BOTH);
 370     ok( !ret, "Vertical window scroll bar was not enabled\n");
 371     ret = EnableScrollBar( hwnd, SB_HORZ, ESB_ENABLE_BOTH);
 372     ok( !ret, "Horizontal window scroll bar was not enabled\n");
 373     DestroyWindow( hwnd);
 374     /* finally, check if adding a WS_[HV]SCROLL style of a window makes the scroll info
 375      * available */
 376     if( style & (WS_HSCROLL | WS_VSCROLL)) return;/* only test if not yet set */
 377     /* Start with a clean window */
 378     DestroyWindow( hwnd);
 379     hwnd = CreateWindowExA( 0, "static", "", WS_POPUP ,
 380                 0, 0, 10, 10, 0, 0, 0, NULL);
 381     assert( hwnd != 0);
 382     ret = GetScrollInfo( hwnd, SB_VERT, &si);
 383     /* should fail */
 384     ok( !ret, "GetScrollInfo succeeded unexpectedly. Style is %08x\n", style);
 385     /* add scroll styles */
 386     winstyle = GetWindowLongA( hwnd, GWL_STYLE );
 387     SetWindowLongW( hwnd, GWL_STYLE, winstyle | WS_VSCROLL | WS_HSCROLL);
 388     ret = GetScrollInfo( hwnd, SB_VERT, &si);
 389     /* should still fail */
 390     ok( !ret, "GetScrollInfo succeeded unexpectedly. Style is %08x\n", style);
 391     /* clean up */
 392     DestroyWindow( hwnd);
 393 }
 394
 395 static LRESULT CALLBACK scroll_init_proc(HWND hwnd, UINT msg,
 396                                         WPARAM wparam, LPARAM lparam)
 397 {
 398     SCROLLINFO horz, vert;
 399     CREATESTRUCTA *cs = (CREATESTRUCTA *)lparam;
 400     BOOL h_ret, v_ret;
 401
 402     switch(msg)
 403     {
 404         case WM_NCCREATE:
 405             return cs->lpCreateParams ? DefWindowProcA(hwnd, msg, wparam, lparam) :
 406                                         TRUE;
 407
 408         case WM_CREATE:
 409             horz.cbSize = sizeof horz;
 410             horz.fMask  = SIF_ALL;
 411             horz.nMin   = 0xdeadbeaf;
 412             horz.nMax   = 0xbaadc0de;
 413             vert = horz;
 414             h_ret = GetScrollInfo(hwnd, SB_HORZ, &horz);
 415             v_ret = GetScrollInfo(hwnd, SB_VERT, &vert);
 416
 417             if(cs->lpCreateParams)
 418             {
 419                 /* WM_NCCREATE was passed to DefWindowProc */
 420                 if(cs->style & (WS_VSCROLL | WS_HSCROLL))
 421                 {
 422                     ok(h_ret && v_ret, "GetScrollInfo() should return NON-zero "
 423                             "but got h_ret=%d v_ret=%d\n", h_ret, v_ret);
 424                     ok(vert.nMin == 0 && vert.nMax == 100,
 425                             "unexpected init values(SB_VERT): min=%d max=%d\n",
 426                             vert.nMin, vert.nMax);
 427                     ok(horz.nMin == 0 && horz.nMax == 100,
 428                             "unexpected init values(SB_HORZ): min=%d max=%d\n",
 429                             horz.nMin, horz.nMax);
 430                 }
 431                 else
 432                 {
 433                     ok(!h_ret && !v_ret, "GetScrollInfo() should return zeru, "
 434                             "but got h_ret=%d v_ret=%d\n", h_ret, v_ret);
 435                     ok(vert.nMin == 0xdeadbeaf && vert.nMax == 0xbaadc0de,
 436                             "unexpected  initialization(SB_VERT): min=%d max=%d\n",
 437                             vert.nMin, vert.nMax);
 438                     ok(horz.nMin == 0xdeadbeaf && horz.nMax == 0xbaadc0de,
 439                             "unexpected  initialization(SB_HORZ): min=%d max=%d\n",
 440                             horz.nMin, horz.nMax);
 441                 }
 442             }
 443             else
 444             {
 445                 ok(!h_ret && !v_ret, "GetScrollInfo() should return zeru, "
 446                     "but got h_ret=%d v_ret=%d\n", h_ret, v_ret);
 447                 ok(horz.nMin == 0xdeadbeaf && horz.nMax == 0xbaadc0de &&
 448                     vert.nMin == 0xdeadbeaf && vert.nMax == 0xbaadc0de,
 449                         "unexpected initialization\n");
 450             }
 451             return FALSE; /* abort creation */
 452
 453         default:
 454             /* need for WM_GETMINMAXINFO, which precedes WM_NCCREATE */
 455             return 0;
 456     }
 457 }
 458
 459 static void scrollbar_test_init(void)
 460 {
 461     WNDCLASSEXA wc;
 462     CHAR cls_name[] = "scroll_test_class";
 463     LONG style[] = {WS_VSCROLL, WS_HSCROLL, WS_VSCROLL | WS_HSCROLL, 0};
 464     int i;
 465
 466     memset( &wc, 0, sizeof wc );
 467     wc.cbSize        = sizeof wc;
 468     wc.style         = CS_VREDRAW | CS_HREDRAW;
 469     wc.hInstance     = GetModuleHandleA(0);
 470     wc.hCursor       = LoadCursorA(NULL, IDC_ARROW);
 471     wc.hbrBackground = GetStockObject(WHITE_BRUSH);
 472     wc.lpszClassName = cls_name;
 473     wc.lpfnWndProc   = scroll_init_proc;
 474     RegisterClassExA(&wc);
 475
 476     for(i = 0; i < sizeof style / sizeof style[0]; i++)
 477     {
 478         /* need not to destroy these windows due creation abort */
 479         CreateWindowExA(0, cls_name, NULL, style[i],
 480                 100, 100, 100, 100, NULL, NULL, wc.hInstance, (LPVOID)TRUE);
 481         CreateWindowExA(0, cls_name, NULL, style[i],
 482                 100, 100, 100, 100, NULL, NULL, wc.hInstance, (LPVOID)FALSE);
 483     }
 484     UnregisterClassA(cls_name, wc.hInstance);
 485 }
 486
 487 START_TEST ( scroll )
 488 {
 489     WNDCLASSA wc;
 490     HMODULE hUxtheme;
 491     BOOL (WINAPI * pIsThemeActive)(VOID);
 492
 493     wc.style = CS_HREDRAW | CS_VREDRAW;
 494     wc.cbClsExtra = 0;
 495     wc.cbWndExtra = 0;
 496     wc.hInstance = GetModuleHandleA(NULL);
 497     wc.hIcon = NULL;
 498     wc.hCursor = LoadCursorA(NULL, IDC_IBEAM);
 499     wc.hbrBackground = GetSysColorBrush(COLOR_WINDOW);
 500     wc.lpszMenuName = NULL;
 501     wc.lpszClassName = "MyTestWnd";
 502     wc.lpfnWndProc = MyWndProc;
 503     RegisterClassA(&wc);
 504
 505     hMainWnd = CreateWindowExA( 0, "MyTestWnd", "Scroll",
 506       WS_OVERLAPPEDWINDOW|WS_VSCROLL|WS_HSCROLL,
 507       CW_USEDEFAULT, CW_USEDEFAULT, 100, 100, NULL, NULL, GetModuleHandleA(NULL), 0 );
 508
 509     ok(hMainWnd != NULL, "Failed to create parent window. Tests aborted.\n");
 510     if (!hMainWnd) return;
 511
 512     assert( hScroll );
 513
 514     scrollbar_test1();
 515     scrollbar_test2();
 516     scrollbar_test3();
 517     scrollbar_test4();
 518     scrollbar_test_track();
 519
 520     /* Some test results vary depending of theming being active or not */
 521     hUxtheme = LoadLibraryA("uxtheme.dll");
 522     if (hUxtheme)
 523     {
 524         pIsThemeActive = (void*)GetProcAddress(hUxtheme, "IsThemeActive");
 525         if (pIsThemeActive)
 526             bThemeActive = pIsThemeActive();
 527         FreeLibrary(hUxtheme);
 528     }
 529
 530     scrollbar_test_default( 0);
 531     scrollbar_test_default( WS_HSCROLL);
 532     scrollbar_test_default( WS_VSCROLL);
 533     scrollbar_test_default( WS_HSCROLL | WS_VSCROLL);
 534
 535     scrollbar_test_init();
 536
 537     DestroyWindow(hScroll);
 538     DestroyWindow(hMainWnd);
 539 }