Geoff Chappell, Software Analyst
The table on this page lists all the functions that appear in the export directory of any known version of DWMAPI.DLL. It gives for each function just brief summaries of the applicable DWMAPI versions and of the function’s status with respect to Microsoft’s documentation. Explanatory notes follow the table.
| Function | Applicable Versions | Documentation Status |
|---|---|---|
| DwmAttachMilContent | 6.0 and higher | documented in 2009 |
| DwmDefWindowProc | 6.0 and higher | documented |
| DwmDetachMilContent | 6.0 and higher | documented in 2009 |
| DwmEnableBlurBehindWindow | 6.0 and higher | documented |
| DwmEnableComposition | 6.0 and higher | documented |
| DwmEnableMMCSS | 6.0 and higher | documented |
| DwmExtendFrameIntoClientArea | 6.0 and higher | documented |
| DwmFlush | 6.0 and higher | documented in 2009 |
| DwmGetColorizationColor | 6.0 and higher | documented |
| DwmGetCompositionTimingInfo | 6.0 and higher | documented |
| DwmGetGraphicsStreamClient | 6.0 and higher | documented in 2009 |
| DwmGetGraphicsStreamTransformHint | 6.0 and higher | documented in 2009 |
| DwmGetTransportAttributes | 6.0 and higher | documented in 2009 |
| DwmGetWindowAttribute | 6.0 and higher | documented |
| DwmInvalidateIconicBitmaps | 6.1 and higher | documented |
| DwmIsCompositionEnabled | 6.0 and higher | documented |
| DwmModifyPreviousDxFrameDuration | 6.0 and higher | documented |
| DwmpActivateLivePreview (113) | 6.1 and higher | |
| DwmpCloseGraphicsStream (110) | 6.0 and higher | |
| DwmpDxBindSwapChain (125) | 6.1 and higher | |
| DwmpDxGetWindowSharedSurface (100) | 6.0 and higher | |
| DwmpDxgiDisableRedirection (129) | 6.1 and higher | |
| DwmpDxgiEnableRedirection (130) | 6.1 and higher | |
| DwmpDxgiIsThreadDesktopComposited (128) | 6.1 and higher | |
| DwmpDxSetContentHostingInformation (134) | 6.1 and higher | |
| DwmpDxUnbindSwapChain (126) | 6.1 and higher | |
| DwmpDxUpdateWindowRedirectionBltSurface (133) | 6.1 and higher | |
| DwmpDxUpdateWindowSharedSurface (101) | 6.0 and higher | |
| DwmpEnableRedirection (108) | 6.0 and higher | |
| DwmpGetAssessment (118) | 6.0 and higher | |
| DwmpGetAssessmentUsage (119) | 6.0 and higher | |
| DwmpGetColorizationParameters (127) | 6.1 and higher | |
| DwmpGetCompositionTimingInfoEx (132) | 6.1 and higher | |
| DwmpGetGlobalState (107) | 6.0 and higher | |
| DwmpIsCompositionCapable (106) | 6.0 and higher | |
| DwmpIsSessionDWM (121) | 6.0 and higher | |
| DwmpOpenGraphicsStream (109) | 6.0 and higher | |
| DwmpQueryThumbnailType (114) | 6.1 and higher | |
| DwmpRegisterThumbnail (124) | 6.0 and higher | |
| DwmpRestartComposition (103) | 6.0 and higher | |
| DwmpSetAssessmentUsage (120) | 6.0 and higher | |
| DwmpSetColorizationColor (104) | 6.0 and higher | |
| DwmpSetColorizationParameters (131) | 6.1 and higher | |
| DwmpSetGraphicsStreamTransformHint (112) | 6.0 and higher | |
| DwmpStartOrStopFlip3D (105) | 6.0 and higher | |
| DwmpStartupViaUserInit (115) | 6.0 and higher | |
| DwmQueryThumbnailSourceSize | 6.0 and higher | documented |
| DwmRegisterThumbnail | 6.0 and higher | documented |
| DwmSetDxFrameDuration | 6.0 and higher | documented |
| DwmSetIconicLivePreviewBitmap | 6.1 and higher | documented |
| DwmSetIconicThumbnail | 6.1 and higher | documented |
| DwmSetPresentParameters | 6.0 and higher | documented |
| DwmSetWindowAttribute | 6.0 and higher | documented |
| DwmUnregisterThumbnail | 6.0 and higher | documented |
| DwmUpdateThumbnailProperties | 6.0 and higher | documented |
Function names are reproduced from the export directory of the DWMAPI executable, wherever possible. For functions that are not exported by name (i.e., are exported only by ordinal) from any known DWMAPI version, names are inferred from symbol files that Microsoft supplies for customer support. If a function is known as an ordinal-only export from at least one DWMAPI version, then the ordinal is given in brackets immediately after the function’s name.
The DWMAPI versions shown for each function are inferred from a study of known releases, making reasonable assumptions about likely continuity, especially to suppose that a function will exist in future versions or that a function exists in all (released) builds of a version if no counter-example is yet known.
Except where otherwise stated, the reference version for Microsoft’s documentation is the January 2007 edition of the Windows Vista Software Development Kit, as distributed by Microsoft on MSDN disc 3667. There appears to be just the one section for DWM functions. That a function is not marked above as “documented” (or is marked elsewhere as “undocumented”) does not mean for certain that Microsoft does not document it, just that I haven’t yet found where.
Functions added for version 6.1 are marked as “documented” if an on-line search shows them to be, pending my acquisition of a definitive SDK for Windows 7 (apparently not supplied on disc with MSDN subscriptions) to adopt formally as a new reference edition.
Note that some functions introduced for version 6.0 were not documented for the contemporaneous reference edition but have got documented since. These are marked as “documented in 2009” for although they do appear in a DWMAPI.H header file dated January 2008, they were not yet documented in the MSDN Library as late as November 2008.