ocidl.h header

This header is used by multiple technologies. For more information, see:

• Component Object Model (COM)
• DirectShow
• Windows Search

ocidl.h contains the following programming interfaces:

Interfaces

IAdviseSinkEx This interface is derived from IAdviseSink to provide extensions for notifying the sink of changes in an object's view status.
IClassFactory2 Enables a class factory object, in any sort of object server, to control object creation through licensing.
IConnectionPoint Supports connection points for connectable objects. (IConnectionPoint)
IConnectionPointContainer Supports connection points for connectable objects. (IConnectionPointContainer)
IEnumConnectionPoints Enumerates connection points.
IEnumConnections Enumerates the current connections for a connectable object.
IEnumOleUndoUnits Enumerates the undo units on the undo or redo stack.
IFont Provides a wrapper around a Windows font object.
IFontDisp Exposes a font object's properties through Automation. It provides a subset of the IFont methods.
IObjectWithSite Provides a simple way to support communication between an object and its site in the container.
IOleControl Provides the features for supporting keyboard mnemonics, ambient properties, and events in control objects.
IOleControlSite Provides the methods that enable a site object to manage each embedded control within a container.
IOleInPlaceObjectWindowless Enables a windowless object to process window messages and participate in drag and drop operations. It is derived from and extends the IOleInPlaceObject interface.
IOleInPlaceSiteEx Provides an additional set of activation and deactivation notification methods that enable an object to avoid unnecessary flashing on the screen when the object is activated and deactivated.
IOleInPlaceSiteWindowless Extends the IOleInPlaceSiteEx interface.
IOleParentUndoUnit Enables undo units to contain child undo units.
IOleUndoManager The IOleUndoManager interface enables containers to implement multi-level undo and redo operations for actions that occur within contained controls.
IOleUndoUnit Serves as the main interface on an undo unit. An undo unit encapsulates the information necessary to undo or redo a single action.
IPerPropertyBrowsing Retrieves the information in the property pages offered by an object.
IPersistPropertyBag Works with IPropertyBag and IErrorlog to define an individual property-based persistence mechanism.
IPersistStreamInit A replacement for IPersistStream that adds an initialization method.
IPicture Manages a picture object and its properties. Picture objects provide a language-neutral abstraction for bitmaps, icons, and metafiles.
IPictureDisp Exposes the picture object's properties through Automation. It provides a subset of the functionality available through IPicture methods.
IPointerInactive Enables an object to remain inactive most of the time, yet still participate in interaction with the mouse, including drag and drop.
IPropertyNotifySink Implemented by a sink object to receive notifications about property changes from an object that supports IPropertyNotifySink as an outgoing interface.
IPropertyPage Provides the main features of a property page object that manages a particular page within a property sheet.
IPropertyPage2 An extension to IPropertyPage to support initial selection of a property on a page.
IPropertyPageSite Provides the main features for a property page site object.
IProvideClassInfo Provides access to the type information for an object's coclass entry in its type library.
IProvideClassInfo2 An extension to IProvideClassInfo that makes is faster and easier to retrieve an object's outgoing interface IID for its default event set.
IProvideMultipleClassInfo An extension to IProvideClassInfo2 that makes it faster and easier to retrieve type information from a component that may have multiple coclasses that determine its behavior.
IQuickActivate Enables controls and containers to avoid performance bottlenecks on loading controls. It combines the load-time or initialization-time handshaking between the control and its container into a single call.
ISimpleFrameSite Provides simple frame controls that act as simple containers for other nested controls.
ISpecifyPropertyPages Indicates that an object supports property pages.
IViewObjectEx An extension derived from IViewObject2 to provide support for Enhanced, flicker-free drawing for non-rectangular objects and transparent objects, hit testing for non-rectangular objects, and Control sizing

Functions

HPALETTE_UserFree Frees resources on the server side when called by RPC stub files (HPALETTE_UserFree).
HPALETTE_UserFree64 Frees resources on the server side when called by RPC stub files. (HPALETTE_UserFree64)
HPALETTE_UserMarshal Marshals an HPALETTE object into the RPC buffer. (HPALETTE_UserMarshal)
HPALETTE_UserMarshal64 Marshals an HPALETTE object into the RPC buffer. (HPALETTE_UserMarshal64)
HPALETTE_UserSize Calculates the wire size of the HPALETTE object and gets its handle and data. (HPALETTE_UserSize)
HPALETTE_UserSize64 Calculates the wire size of the HPALETTE object and gets its handle and data. (HPALETTE_UserSize64)
HPALETTE_UserUnmarshal Unmarshals an HPALETTE object from the RPC buffer. (HPALETTE_UserUnmarshal)
HPALETTE_UserUnmarshal64 Unmarshals an HPALETTE object from the RPC buffer. (HPALETTE_UserUnmarshal64)

Structures

CADWORD Specifies a counted array of values that can be used to obtain the value corresponding to one of the predefined strings for a property.
CALPOLESTR Specifies a counted array of strings used to specify the predefined strings that a property can accept.
CAUUID Specifies a counted array of UUID or GUID types used to receive an array of CLSIDs for the property pages that the object wants to display.
CONNECTDATA Describes a connection that exists to a given connection point.
CONTROLINFO Contains parameters that describe a control's keyboard mnemonics and keyboard behavior. The structure is populated during the IOleControl::GetControlInfo method.
DVASPECTINFO Contains information that is used by the IViewObject::Draw method to optimize rendering of an inactive object by making more efficient use of the GDI.
DVEXTENTINFO Represents the sizing data used in IViewObjectEx::GetNaturalExtent.
LICINFO Contains parameters that describe the licensing behavior of a class factory that supports licensing. The structure is filled by calling the IClassFactory2::GetLicInfo method.
POINTF Contains information that is used to convert between container units, expressed in floating point, and control units, expressed in HIMETRIC.
PROPPAGEINFO Contains parameters used to describe a property page to a property frame. A property page fills a caller-provided structure in the IPropertyPage::GetPageInfo method.
QACONTAINER Specifies container information for IQuickActivate::QuickActivate.
QACONTROL Specifies control information for IQuickActivate::QuickActivate.

Enumerations

ACTIVATEFLAGS Indicates whether an object is activated as a windowless object. It is used in IOleInPlaceSiteEx::OnInPlaceActivateEx.
DVASPECT2 Specifies new drawing aspects used to optimize the drawing process.
DVASPECTINFOFLAG Indicates whether an object can support optimized drawing of itself.
DVEXTENTMODE Indicates whether the sizing mode is content or integral sizing.
GUIDKIND Flags used to specify the kind of information requested from an object in the IProvideClassInfo2.
HITRESULT Indicates whether a location is within the image of an object.
OLEDCFLAGS Specifies additional information to the container about the device context that the object has requested.
PICTUREATTRIBUTES Specifies attributes of a picture object as returned through the IPicture::get_Attributes method.
POINTERINACTIVE Indicate the activation policy of the object and are used in the IPointerInactive::GetActivationPolicy method.
QACONTAINERFLAGS Indicates ambient properties supplied by the container. It is used in the dwAmbientFlags member of the QACONTAINER structure.
READYSTATE The ReadyState property retrieves the ReadyState of the MSWebDVD object.
UASFLAGS Provides information about the parent undo unit.
VIEWSTATUS Specifies the opacity of the object and the drawing aspects supported by the object.