PreloadResourceType
status_t PreloadResourceType(type_code type = 0);
resources.PreloadResourceType();
resources.PreloadResourceType();
result = fResources.PreloadResourceType();
resources.PreloadResourceType(B_VECTOR_ICON_TYPE);
resources.PreloadResourceType(B_COLOR_8_BIT_TYPE);
CPPUNIT_ASSERT( resources.PreloadResourceType(B_MESSENGER_TYPE)
CPPUNIT_ASSERT( resources.PreloadResourceType(B_INT32_TYPE) == B_OK );
CPPUNIT_ASSERT( resources.PreloadResourceType() == B_OK );
CPPUNIT_ASSERT( resources.PreloadResourceType(B_INT32_TYPE) == B_OK );
CPPUNIT_ASSERT( resources.PreloadResourceType() == B_OK );