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§CompareIDs()

IShellFolder::CompareIDs (shobjidl_core.h)

In Explorer of Windows 11 24H2, CompareIDs() is called through:

windows.storage.dll!DVCompareColumns+0x1d7
windows.storage.dll!_DSA_MergeSort2+0x15e
windows.storage.dll!_DSA_MergeSort2+0x54
windows.storage.dll!_DSA_MergeSort2+0x54
windows.storage.dll!_DSA_MergeSort2+0x66
windows.storage.dll!_DSA_MergeSort+0x69
windows.storage.dll!DSA_Sort+0x4f
windows.storage.dll!CSortTask::InternalResumeRT+0xc0
windows.storage.dll!CRunnableTask::Run+0xb6
windows.storage.dll!CShellTaskThread::ThreadProc+0x2ca
windows.storage.dll!CShellTaskThread::s_ThreadProc+0x15e
SHCore.dll!ExecuteWorkItemThreadProc+0x15

On a different thread than IPropertyStore::GetValue() is called, and may be different for each sort for the same Explorer window.

Different PIDLs of the same file system path may be passed in rare cases.

If CompareIDs() returns error, Explorer will fall back to compare ItemNameDisplay instead when comparing other properties, including folder size.

Inconsistent ordering may cause buggy results, like the column order is sometimes correct but sometimes wrong.

§Implementations

§CFSFolder

Interfaces (on Windows 11 24H2):

  • 000214e6_0000_0000_c000_000000000046 ShellFolder
  • b3a4b685_b685_4805_99d9_5dead2873236 ParentAndItem
  • 93f2f68c_1d1b_11d3_a30e_00c04f79abd1 ShellFolder2
  • cef04fdf_fe72_11d2_87a5_00c04f6837cf PersistFolder3
  • 0000010c_0000_0000_c000_000000000046 Persist
  • 000214ea_0000_0000_c000_000000000046 PersistFolder
  • 1ac3d9f0_175c_11d1_95be_00609797ea4f PersistFolder2
  • 000214e5_0000_0000_c000_000000000046 ShellIcon
  • add8ba80_002b_11d0_8f0f_00c04fd7d062 DelegateFolder
  • 321a6a6a_d61f_4bf3_97ae_14be2986bb36 ObjectWithBackReferences
  • 7d688a70_c613_11d0_999b_00c04fd655e1 ShellIconOverlay
  • 37d84f60_42cb_11ce_8135_00aa004bb851 PersistPropertyBag
  • 0000000b_0000_0000_c000_000000000046 Storage
  • 1df0d7f1_b267_4d28_8b10_12e23202a5c4 ItemNameLimits
  • 3409e930_5a39_11d1_83fa_00a0c90dc849 ContextMenuCB
  • b722bccb_4e68_101b_a2bc_00aa00404770 OleCommandTarget
  • a6087428_3be3_4d73_b308_7c04a540bf1a ObjectProvider
  • fc4801a3_2ba9_11cf_a229_00aa003d7352 ObjectWithSite
  • 000214fe_0000_0000_c000_000000000046 RemoteComputer
  • e35b4b2e_00da_4bc1_9f13_38bc11f5d417 ThumbnailHandlerFactory
  • e07010ec_bc17_44c0_97b0_46c7c95b9edc ExplorerPaneVisibility
  • e9701183_e6b3_4ff2_8568_813615fec7be NameSpaceTreeControlFolderCapabilities
  • c938b119_d3ad_4d02_b5ee_164c2ec8160e
  • fdbee76e_f12b_408e_93ab_9be8521000d9
  • 2536f9ac_2876_408a_9adf_1fe1c14c0e7f
  • 089f3011_bb5c_4f9c_9b8f_9a67ed446e91
  • 08727c66_4a04_456d_8c9a_cc1f65490753
  • 76347b91_9846_4ce7_9a57_69b910d16123
  • 0681c275_472b_4097_97b3_f19e4875fdc9
  • 124bae2c_cb94_42cd_b5b8_4358789684ef
  • ff314a1e_06fa_4f3a_84be_7aa1c6be2470
  • 47d9e2b2_cbb3_4fe3_a925_f49978685982
  • 053b4a86_0dc9_40a3_b7ed_bc6a2e951f48
  • 3f943012_447b_4109_8b74_720106853c96
  • c51e78b5_566b_4cb0_b6ed_784e18797e23
  • dc0ac42a_141e_4876_9c43_824829440de0
  • be9da82b_cc54_4b19_8c22_ad7762ff29eb
  • 013c437f_d523_41fa_8beb_f5100e1ca41c
  • 127f6acb_7e78_4368_83a4_ed1de72baca6
  • d960050c_f4e1_4294_ac4b_598913605923

Structs§

CompareIDs
IShellFolder::CompareIDs (shobjidl_core.h)
CompareIDsBuilder
Use builder syntax to set the inputs and finish with build().

Traits§

ShellFolder
IShellFolder (shobjidl_core.h)