次の方法で共有

CMediaType::IsValid (Compact 2013)

  • [アーティクル]

3/26/2014

Queries whether the object has a valid major type.

Syntax

BOOL IsValid( ) const;

Parameters

None.

Return Value

Returns one of the following values.

Value

Description

TRUE

CMediaType object has a valid major type.

FALSE

CMediaType object does not have a valid major type.

Remarks

When CMediaType objects are constructed, their GUIDs are initialized with GUID_NULL (unless they are constructed based on another AM_MEDIA_TYPE structure or CMediaType object).

This member function is useful for discovering if the object has been correctly initialized.

Requirements

Header

dshow.h,
Streams.h

Library

ole32.lib,
Ole32auth.lib,
Strmbase.lib,
Strmiids.lib,
uuid.lib

See Also

Reference

CMediaType Class