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Learn more about: IQuickActivateImpl Class |
IQuickActivateImpl Class |
11/04/2016 |
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This class combines containers' control initialization into a single call.
Important
This class and its members cannot be used in applications that execute in the Windows Runtime.
template <class T>
class ATL_NO_VTABLE IQuickActivateImpl : public IQuickActivate
T
Your class, derived from IQuickActivateImpl
.
Name | Description |
---|---|
IQuickActivateImpl::GetContentExtent | Retrieves the current display size for a running control. |
IQuickActivateImpl::QuickActivate | Performs quick initialization of controls being loaded. |
IQuickActivateImpl::SetContentExtent | Informs the control of how much display space the container has assigned to it. |
The IQuickActivate interface helps containers avoid delays when loading controls by combining initialization in a single call. The QuickActivate
method allows the container to pass a pointer to a QACONTAINER structure that holds pointers to all the interfaces the control needs. On return, the control passes back a pointer to a QACONTROL structure that holds pointers to its own interfaces, which are used by the container. Class IQuickActivateImpl
provides a default implementation of IQuickActivate
and implements IUnknown
by sending information to the dump device in debug builds.
Related Articles ATL Tutorial, Creating an ATL Project
IQuickActivate
IQuickActivateImpl
Header: atlctl.h
Retrieves the current display size for a running control.
STDMETHOD(GetContentExtent)(LPSIZEL pSize);
The size is for a full rendering of the control and is specified in HIMETRIC units.
See IQuickActivate::GetContentExtent in the Windows SDK.
Performs quick initialization of controls being loaded.
STDMETHOD(QuickActivate)(
QACONTAINER* pQACont,
QACONTROL* pQACtrl);
The structure contains pointers to interfaces needed by the control and the values of some ambient properties. Upon return, the control passes a pointer to a QACONTROL structure that contains pointers to its own interfaces that the container requires, and additional status information.
See IQuickActivate::QuickActivate in the Windows SDK.
Informs the control of how much display space the container has assigned to it.
STDMETHOD(SetContentExtent)(LPSIZEL pSize);
The size is specified in HIMETRIC units.
See IQuickActivate::SetContentExtent in the Windows SDK.