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Make RegisterClassExA check that reserved bytes is a valid value. 

Tests to confirm this behaviour.
This commit is contained in:
Jason Edmeades 2005-02-22 14:56:28 +00:00 committed by Alexandre Julliard
parent dd99a50f37
commit e4c2d6ba8c
2 changed files with 31 additions and 4 deletions
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24
dlls/user/tests/class.c
View File

@ -310,6 +310,7 @@ static void test_instances(void)
cls.lpszMenuName = "main_module";
cls.hInstance = main_module;
ok( RegisterClassA( &cls ), "Failed to register local class for main module\n" );
check_class( main_module, name, "main_module" );
check_instance( name, main_module, main_module, main_module );
@ -324,6 +325,29 @@ static void test_instances(void)
check_thread_instance( name, kernel32, kernel32, kernel32 );
ok( UnregisterClassA( name, kernel32 ), "Unregister failed for kernel32\n" );
/* Bug 2631 - Supplying an invalid number of bytes fails */
cls.cbClsExtra = 0;
cls.cbWndExtra = -1;
SetLastError(0xdeadbeef);
ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
"Failed with invalid number of WndExtra bytes\n");
cls.cbClsExtra = -1;
cls.cbWndExtra = 0;
SetLastError(0xdeadbeef);
ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
"Failed with invalid number of ClsExtra bytes\n");
cls.cbClsExtra = -1;
cls.cbWndExtra = -1;
SetLastError(0xdeadbeef);
ok( ((RegisterClassA( &cls ) == 0) && (GetLastError() == ERROR_INVALID_PARAMETER)),
"Failed with invalid number of ClsExtra and cbWndExtra bytes\n");
cls.cbClsExtra = 0;
cls.cbWndExtra = 0;
SetLastError(0xdeadbeef);
/* setting global flag doesn't change status of class */
hwnd = CreateWindowExA( 0, name, "test", 0, 0, 0, 0, 0, 0, 0, main_module, 0 );
SetClassLongA( hwnd, GCL_STYLE, CS_GLOBALCLASS );

11
windows/class.c
View File

@ -379,11 +379,14 @@ static CLASS *CLASS_RegisterClass( ATOM atom, HINSTANCE hInstance, BOOL local,
/* Fix the extra bytes value */
if (classExtra < 0) classExtra = 0;
else if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
if (classExtra < 0 || winExtra < 0)
{
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
if (classExtra > 40) /* Extra bytes are limited to 40 in Win32 */
WARN("Class extra bytes %d is > 40\n", classExtra);
if (winExtra < 0) winExtra = 0;
else if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
if (winExtra > 40) /* Extra bytes are limited to 40 in Win32 */
WARN("Win extra bytes %d is > 40\n", winExtra );
classPtr = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(CLASS) + classExtra );