The following flags determine the behavior of registered Microsoft ActiveX controls.

Syntax

typedef enum {
    COMPAT_AGGREGATE = 0x00000001,
    COMPAT_NO_OBJECTSAFETY = 0x00000002,
    COMPAT_NO_PROPNOTIFYSINK = 0x00000004,
    COMPAT_SEND_SHOW = 0x00000008,
    COMPAT_SEND_HIDE = 0x00000010,
    COMPAT_ALWAYS_INPLACEACTIVATE = 0x00000020,
    COMPAT_NO_SETEXTENT = 0x00000040,
    COMPAT_NO_UIACTIVATE = 0x00000080,
    COMPAT_NO_QUICKACTIVATE = 0x00000100,
    COMPAT_NO_BINDF_OFFLINEOPERATION = 0x00000200,
    COMPAT_EVIL_DONT_LOAD = 0x00000400,
    COMPAT_PROGSINK_UNTIL_ACTIVATED = 0x00000800,
    COMPAT_USE_PROPBAG_AND_STREAM = 0x00001000,
    COMPAT_DISABLEWINDOWLESS = 0x00002000,
    COMPAT_SETWINDOWRGN = 0x00004000,
    COMPAT_PRINTPLUGINSITE = 0x00008000,
    COMPAT_INPLACEACTIVATEEVENWHENINVISIBLE = 0x00010000,
    COMPAT_NEVERFOCUSSABLE = 0x00020000,
    COMPAT_ALWAYSDEFERSETWINDOWRGN = 0x00040000,
    COMPAT_INPLACEACTIVATESYNCHRONOUSLY = 0x00080000,
    COMPAT_NEEDSZEROBASEDDRAWRECT = 0x00100000,
    COMPAT_HWNDPRIVATE = 0x00200000,
    COMPAT_SECURITYCHECKONREDIRECT = 0x00400000,
    COMPAT_SAFEFOR_LOADING = 0x00800000
} COMPAT;

Constants

COMPAT_AGGREGATE

This control is aggregated.

COMPAT_NO_OBJECTSAFETY

This control is not safe for scripting, even if it implements IObjectSafety.

COMPAT_NO_PROPNOTIFYSINK

A property notify sink is not attached to this control.

COMPAT_SEND_SHOW

For this control, IOleObject::DoVerb is called with OLEIVERB_SHOW before IOleObject::DoVerb is called with OLEIVERB_INPLACEACTIVATE.

COMPAT_SEND_HIDE

For this control, IOleObject::DoVerb is called with OLEIVERB_HIDE before IOleInPlaceObject::InPlaceDeactivate is called.

COMPAT_ALWAYS_INPLACEACTIVATE

For this control, IOleObject::DoVerb is called with OLEIVERB_INPLACEACTIVATE.

COMPAT_NO_SETEXTENT

The amount of space required by this control's container is not specified.

COMPAT_NO_UIACTIVATE

This control cannot activate the user interface (UI) elements of the current document host.

COMPAT_NO_QUICKACTIVATE

This control does not implement IQuickActivate or should not be activated quickly.

COMPAT_NO_BINDF_OFFLINEOPERATION

A cached version of this control is never used.

COMPAT_EVIL_DONT_LOAD

This control is never used.

COMPAT_PROGSINK_UNTIL_ACTIVATED

This control cannot be used for scripting until in-place activation is complete.

COMPAT_USE_PROPBAG_AND_STREAM

Both IPersistPropertyBag::Load and IPersistStreamInit::Load are called when using this control.

COMPAT_DISABLEWINDOWLESS

This control cannot be in-place activated without a window.

COMPAT_SETWINDOWRGN

This control cannot have UI outside of the window.

COMPAT_PRINTPLUGINSITE

This control has printing capabilities that should be used instead of those provided by Windows Internet Explorer.

COMPAT_INPLACEACTIVATEEVENWHENINVISIBLE

This control is in-place activated whether or not it is visible.

COMPAT_NEVERFOCUSSABLE

This control can never receive focus.

COMPAT_ALWAYSDEFERSETWINDOWRGN

This control is allowed to have, at most, one pending resize request.

COMPAT_INPLACEACTIVATESYNCHRONOUSLY

This control is in-place activated syncronously.

COMPAT_NEEDSZEROBASEDDRAWRECT

This control is positioned in the upper-left corner of the host window.

COMPAT_HWNDPRIVATE

This control does not provide access to its window handle.

COMPAT_SECURITYCHECKONREDIRECT

This control is prevented from accessing content from another domain when redirected by the original server.

COMPAT_SAFEFOR_LOADING

Internet Explorer 7 and later. In the Internet zone, Internet Explorer checks every control for IObjectSafety to determine safety status quickly and abort instantiation as soon as possible. If a particular control doesn't implement IObjectSafety or component categories yet still needs to be instantiated in Internet Explorer without data or scripting, this compatibility flag can be used to disable the frontloaded safety check and revert back to Microsoft Internet Explorer 6 behavior. See Safe Initialization and Scripting for ActiveX Controls.

Remarks

These enumeration members are bit masks that determine how ActiveX controls are used in Internet Explorer. Values are stored in the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility .

Enumerated Type Information

Minimum availability	Internet Explorer 4.0
Minimum operating systems	Windows NT 4.0, Windows 95