dlls/user/tests/dce.c

   1 /*
   2  * Unit tests for DCE support
   3  *
   4  * Copyright 2005 Alexandre Julliard
   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #define NONAMELESSUNION
  22 #define NONAMELESSSTRUCT
  23
  24 #include <assert.h>
  25 #include <stdlib.h>
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "wingdi.h"
  32 #include "winuser.h"
  33
  34 #include "wine/test.h"
  35
  36 static HWND hwnd_cache, hwnd_owndc, hwnd_classdc, hwnd_classdc2;
  37
  38 /* test behavior of DC attributes with various GetDC/ReleaseDC combinations */
  39 static void test_dc_attributes(void)
  40 {
  41     HDC hdc, old_hdc;
  42     INT rop, def_rop;
  43
  44     /* test cache DC */
  45
  46     hdc = GetDC( hwnd_cache );
  47     def_rop = GetROP2( hdc );
  48
  49     SetROP2( hdc, R2_WHITE );
  50     rop = GetROP2( hdc );
  51     ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
  52
  53     ReleaseDC( hwnd_cache, hdc );
  54     hdc = GetDC( hwnd_cache );
  55     rop = GetROP2( hdc );
  56     ok( rop == def_rop, "wrong ROP2 %d after release\n", rop );
  57     SetROP2( hdc, R2_WHITE );
  58     ReleaseDC( hwnd_cache, hdc );
  59
  60     hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
  61     rop = GetROP2( hdc );
  62     /* Win9x seems to silently ignore DCX_NORESETATTRS */
  63     ok( rop == def_rop || rop == R2_WHITE, "wrong ROP2 %d\n", rop );
  64
  65     SetROP2( hdc, R2_WHITE );
  66     rop = GetROP2( hdc );
  67     ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
  68
  69     ReleaseDC( hwnd_cache, hdc );
  70     hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
  71     rop = GetROP2( hdc );
  72     ok( rop == def_rop || rop == R2_WHITE, "wrong ROP2 %d after release\n", rop );
  73     ReleaseDC( hwnd_cache, hdc );
  74
  75     hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE );
  76     rop = GetROP2( hdc );
  77     ok( rop == def_rop, "wrong ROP2 %d after release\n", rop );
  78     ReleaseDC( hwnd_cache, hdc );
  79
  80     /* test own DC */
  81
  82     hdc = GetDC( hwnd_owndc );
  83     SetROP2( hdc, R2_WHITE );
  84     rop = GetROP2( hdc );
  85     ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
  86
  87     old_hdc = hdc;
  88     ReleaseDC( hwnd_owndc, hdc );
  89     hdc = GetDC( hwnd_owndc );
  90     ok( old_hdc == hdc, "didn't get same DC %p/%p\n", old_hdc, hdc );
  91     rop = GetROP2( hdc );
  92     ok( rop == R2_WHITE, "wrong ROP2 %d after release\n", rop );
  93     ReleaseDC( hwnd_owndc, hdc );
  94     rop = GetROP2( hdc );
  95     ok( rop == R2_WHITE, "wrong ROP2 %d after second release\n", rop );
  96
  97     /* test class DC */
  98
  99     hdc = GetDC( hwnd_classdc );
 100     SetROP2( hdc, R2_WHITE );
 101     rop = GetROP2( hdc );
 102     ok( rop == R2_WHITE, "wrong ROP2 %d\n", rop );
 103
 104     old_hdc = hdc;
 105     ReleaseDC( hwnd_classdc, hdc );
 106     hdc = GetDC( hwnd_classdc );
 107     ok( old_hdc == hdc, "didn't get same DC %p/%p\n", old_hdc, hdc );
 108     rop = GetROP2( hdc );
 109     ok( rop == R2_WHITE, "wrong ROP2 %d after release\n", rop );
 110     ReleaseDC( hwnd_classdc, hdc );
 111     rop = GetROP2( hdc );
 112     ok( rop == R2_WHITE, "wrong ROP2 %d after second release\n", rop );
 113
 114     /* test class DC with 2 windows */
 115
 116     old_hdc = GetDC( hwnd_classdc );
 117     SetROP2( old_hdc, R2_BLACK );
 118     hdc = GetDC( hwnd_classdc2 );
 119     ok( old_hdc == hdc, "didn't get same DC %p/%p\n", old_hdc, hdc );
 120     rop = GetROP2( hdc );
 121     ok( rop == R2_BLACK, "wrong ROP2 %d for other window\n", rop );
 122     ReleaseDC( hwnd_classdc, old_hdc );
 123     ReleaseDC( hwnd_classdc, hdc );
 124     rop = GetROP2( hdc );
 125     ok( rop == R2_BLACK, "wrong ROP2 %d after release\n", rop );
 126 }
 127
 128
 129 /* test behavior with various invalid parameters */
 130 static void test_parameters(void)
 131 {
 132     HDC hdc;
 133
 134     hdc = GetDC( hwnd_cache );
 135     ok( ReleaseDC( hwnd_owndc, hdc ), "ReleaseDC with wrong window should succeed\n" );
 136
 137     hdc = GetDC( hwnd_cache );
 138     ok( !ReleaseDC( hwnd_cache, 0 ), "ReleaseDC with wrong HDC should fail\n" );
 139     ok( ReleaseDC( hwnd_cache, hdc ), "correct ReleaseDC should succeed\n" );
 140     ok( !ReleaseDC( hwnd_cache, hdc ), "second ReleaseDC should fail\n" );
 141
 142     hdc = GetDC( hwnd_owndc );
 143     ok( ReleaseDC( hwnd_cache, hdc ), "ReleaseDC with wrong window should succeed\n" );
 144     hdc = GetDC( hwnd_owndc );
 145     ok( ReleaseDC( hwnd_owndc, hdc ), "correct ReleaseDC should succeed\n" );
 146     ok( ReleaseDC( hwnd_owndc, hdc ), "second ReleaseDC should succeed\n" );
 147
 148     hdc = GetDC( hwnd_classdc );
 149     ok( ReleaseDC( hwnd_cache, hdc ), "ReleaseDC with wrong window should succeed\n" );
 150     hdc = GetDC( hwnd_classdc );
 151     ok( ReleaseDC( hwnd_classdc, hdc ), "correct ReleaseDC should succeed\n" );
 152     ok( ReleaseDC( hwnd_classdc, hdc ), "second ReleaseDC should succeed\n" );
 153 }
 154
 155
 156 static void test_dc_visrgn(void)
 157 {
 158     HDC old_hdc, hdc;
 159     HRGN hrgn, hrgn2;
 160     RECT rect;
 161
 162     /* cache DC */
 163
 164     SetRect( &rect, 10, 10, 20, 20 );
 165     MapWindowPoints( hwnd_cache, 0, (POINT *)&rect, 2 );
 166     hrgn = CreateRectRgnIndirect( &rect );
 167     hdc = GetDCEx( hwnd_cache, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE );
 168     SetRectEmpty( &rect );
 169     GetClipBox( hdc, &rect );
 170     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 171         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 172     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 173     ReleaseDC( hwnd_cache, hdc );
 174     ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
 175
 176     /* cache DC with NORESETATTRS */
 177
 178     SetRect( &rect, 10, 10, 20, 20 );
 179     MapWindowPoints( hwnd_cache, 0, (POINT *)&rect, 2 );
 180     hrgn = CreateRectRgnIndirect( &rect );
 181     hdc = GetDCEx( hwnd_cache, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE | DCX_NORESETATTRS );
 182     SetRectEmpty( &rect );
 183     GetClipBox( hdc, &rect );
 184     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 185         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 186     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 187     ReleaseDC( hwnd_cache, hdc );
 188     ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
 189     hdc = GetDCEx( hwnd_cache, 0, DCX_USESTYLE | DCX_NORESETATTRS );
 190     SetRectEmpty( &rect );
 191     GetClipBox( hdc, &rect );
 192     ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
 193         "clip box sould have been reset %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 194     ReleaseDC( hwnd_cache, hdc );
 195
 196     /* window DC */
 197
 198     SetRect( &rect, 10, 10, 20, 20 );
 199     MapWindowPoints( hwnd_owndc, 0, (POINT *)&rect, 2 );
 200     hrgn = CreateRectRgnIndirect( &rect );
 201     hdc = GetDCEx( hwnd_owndc, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE );
 202     SetRectEmpty( &rect );
 203     GetClipBox( hdc, &rect );
 204     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 205         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 206     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 207     ReleaseDC( hwnd_owndc, hdc );
 208     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 209     SetRectEmpty( &rect );
 210     GetClipBox( hdc, &rect );
 211     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 212         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 213     hdc = GetDCEx( hwnd_owndc, 0, DCX_USESTYLE );
 214     SetRectEmpty( &rect );
 215     GetClipBox( hdc, &rect );
 216     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 217         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 218     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 219     ReleaseDC( hwnd_owndc, hdc );
 220     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 221
 222     SetRect( &rect, 20, 20, 30, 30 );
 223     MapWindowPoints( hwnd_owndc, 0, (POINT *)&rect, 2 );
 224     hrgn2 = CreateRectRgnIndirect( &rect );
 225     hdc = GetDCEx( hwnd_owndc, hrgn2, DCX_INTERSECTRGN | DCX_USESTYLE );
 226     ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
 227     SetRectEmpty( &rect );
 228     GetClipBox( hdc, &rect );
 229     todo_wine ok( rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30,
 230         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 231     ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
 232     ReleaseDC( hwnd_owndc, hdc );
 233     ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
 234     hdc = GetDCEx( hwnd_owndc, 0, DCX_EXCLUDERGN | DCX_USESTYLE );
 235     ok( GetRgnBox( hrgn2, &rect ) == ERROR, "region must no longer be valid\n" );
 236     SetRectEmpty( &rect );
 237     GetClipBox( hdc, &rect );
 238     ok( !(rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30),
 239         "clip box should have been reset %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 240     ReleaseDC( hwnd_owndc, hdc );
 241
 242     /* class DC */
 243
 244     SetRect( &rect, 10, 10, 20, 20 );
 245     MapWindowPoints( hwnd_classdc, 0, (POINT *)&rect, 2 );
 246     hrgn = CreateRectRgnIndirect( &rect );
 247     hdc = GetDCEx( hwnd_classdc, hrgn, DCX_INTERSECTRGN | DCX_USESTYLE );
 248     SetRectEmpty( &rect );
 249     GetClipBox( hdc, &rect );
 250     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 251         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 252     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 253     ReleaseDC( hwnd_classdc, hdc );
 254     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 255     SetRectEmpty( &rect );
 256     GetClipBox( hdc, &rect );
 257     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 258         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 259
 260     hdc = GetDCEx( hwnd_classdc, 0, DCX_USESTYLE );
 261     SetRectEmpty( &rect );
 262     GetClipBox( hdc, &rect );
 263     todo_wine ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 264         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 265     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 266     ReleaseDC( hwnd_classdc, hdc );
 267     ok( GetRgnBox( hrgn, &rect ) != ERROR, "region must still be valid\n" );
 268
 269     SetRect( &rect, 20, 20, 30, 30 );
 270     MapWindowPoints( hwnd_classdc, 0, (POINT *)&rect, 2 );
 271     hrgn2 = CreateRectRgnIndirect( &rect );
 272     hdc = GetDCEx( hwnd_classdc, hrgn2, DCX_INTERSECTRGN | DCX_USESTYLE );
 273     ok( GetRgnBox( hrgn, &rect ) == ERROR, "region must no longer be valid\n" );
 274     SetRectEmpty( &rect );
 275     GetClipBox( hdc, &rect );
 276     todo_wine ok( rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30,
 277         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 278     ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
 279
 280     old_hdc = hdc;
 281     hdc = GetDCEx( hwnd_classdc2, 0, DCX_USESTYLE );
 282     ok( old_hdc == hdc, "did not get the same hdc %p/%p\n", old_hdc, hdc );
 283     ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
 284     SetRectEmpty( &rect );
 285     GetClipBox( hdc, &rect );
 286     ok( !(rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30),
 287         "clip box should have been reset %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 288     ReleaseDC( hwnd_classdc2, hdc );
 289     ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
 290     hdc = GetDCEx( hwnd_classdc2, 0, DCX_EXCLUDERGN | DCX_USESTYLE );
 291     ok( GetRgnBox( hrgn2, &rect ) != ERROR, "region2 must still be valid\n" );
 292     ok( !(rect.left >= 20 && rect.top >= 20 && rect.right <= 30 && rect.bottom <= 30),
 293         "clip box must have been reset %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 294     ReleaseDC( hwnd_classdc2, hdc );
 295 }
 296
 297
 298 /* test various BeginPaint/EndPaint behaviors */
 299 static void test_begin_paint(void)
 300 {
 301     HDC old_hdc, hdc;
 302     RECT rect;
 303     PAINTSTRUCT ps;
 304
 305     /* cache DC */
 306
 307     /* clear update region */
 308     RedrawWindow( hwnd_cache, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
 309     SetRect( &rect, 10, 10, 20, 20 );
 310     RedrawWindow( hwnd_cache, &rect, 0, RDW_INVALIDATE );
 311     hdc = BeginPaint( hwnd_cache, &ps );
 312     SetRectEmpty( &rect );
 313     GetClipBox( hdc, &rect );
 314     ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 315         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 316     EndPaint( hwnd_cache, &ps );
 317
 318     /* window DC */
 319
 320     RedrawWindow( hwnd_owndc, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
 321     SetRect( &rect, 10, 10, 20, 20 );
 322     RedrawWindow( hwnd_owndc, &rect, 0, RDW_INVALIDATE );
 323     hdc = BeginPaint( hwnd_owndc, &ps );
 324     SetRectEmpty( &rect );
 325     GetClipBox( hdc, &rect );
 326     ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 327         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 328     ReleaseDC( hwnd_owndc, hdc );
 329     SetRectEmpty( &rect );
 330     GetClipBox( hdc, &rect );
 331     ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 332         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 333     ok( GetDC( hwnd_owndc ) == hdc, "got different hdc\n" );
 334     SetRectEmpty( &rect );
 335     GetClipBox( hdc, &rect );
 336     ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 337         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 338     EndPaint( hwnd_owndc, &ps );
 339     SetRectEmpty( &rect );
 340     GetClipBox( hdc, &rect );
 341     ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
 342         "clip box should have been reset %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 343
 344     /* class DC */
 345
 346     RedrawWindow( hwnd_classdc, NULL, 0, RDW_VALIDATE|RDW_NOFRAME|RDW_NOERASE );
 347     SetRect( &rect, 10, 10, 20, 20 );
 348     RedrawWindow( hwnd_classdc, &rect, 0, RDW_INVALIDATE );
 349     hdc = BeginPaint( hwnd_classdc, &ps );
 350     SetRectEmpty( &rect );
 351     GetClipBox( hdc, &rect );
 352     ok( rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20,
 353         "invalid clip box %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 354
 355     old_hdc = hdc;
 356     hdc = GetDC( hwnd_classdc2 );
 357     ok( old_hdc == hdc, "did not get the same hdc %p/%p\n", old_hdc, hdc );
 358     SetRectEmpty( &rect );
 359     GetClipBox( hdc, &rect );
 360     ok( !(rect.left >= 10 && rect.top >= 10 && rect.right <= 20 && rect.bottom <= 20),
 361         "clip box should have been reset %ld,%ld-%ld,%ld\n", rect.left, rect.top, rect.right, rect.bottom );
 362 }
 363
 364
 365 START_TEST(dce)
 366 {
 367     WNDCLASSA cls;
 368
 369     cls.style = CS_DBLCLKS;
 370     cls.lpfnWndProc = DefWindowProcA;
 371     cls.cbClsExtra = 0;
 372     cls.cbWndExtra = 0;
 373     cls.hInstance = GetModuleHandleA(0);
 374     cls.hIcon = 0;
 375     cls.hCursor = LoadCursorA(0, (LPSTR)IDC_ARROW);
 376     cls.hbrBackground = GetStockObject(WHITE_BRUSH);
 377     cls.lpszMenuName = NULL;
 378     cls.lpszClassName = "cache_class";
 379     RegisterClassA(&cls);
 380     cls.style = CS_DBLCLKS | CS_OWNDC;
 381     cls.lpszClassName = "owndc_class";
 382     RegisterClassA(&cls);
 383     cls.style = CS_DBLCLKS | CS_CLASSDC;
 384     cls.lpszClassName = "classdc_class";
 385     RegisterClassA(&cls);
 386
 387     hwnd_cache = CreateWindowA("cache_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
 388                                0, 0, 100, 100,
 389                                0, 0, GetModuleHandleA(0), NULL );
 390     hwnd_owndc = CreateWindowA("owndc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
 391                                0, 200, 100, 100,
 392                                0, 0, GetModuleHandleA(0), NULL );
 393     hwnd_classdc = CreateWindowA("classdc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
 394                                  200, 0, 100, 100,
 395                                  0, 0, GetModuleHandleA(0), NULL );
 396     hwnd_classdc2 = CreateWindowA("classdc_class", NULL, WS_OVERLAPPED | WS_VISIBLE,
 397                                   200, 200, 100, 100,
 398                                   0, 0, GetModuleHandleA(0), NULL );
 399     test_dc_attributes();
 400     test_parameters();
 401     test_dc_visrgn();
 402     test_begin_paint();
 403 }