IApplicationAssociationRegistration::QueryAppIsDefault method (shobjidl_core.h)
Determines whether an application owns the registered default association for a given application level and type. Not intended for use in Windows 8.
Syntax
HRESULT QueryAppIsDefault(
[in] LPCWSTR pszQuery,
[in] ASSOCIATIONTYPE atQueryType,
[in] ASSOCIATIONLEVEL alQueryLevel,
[in] LPCWSTR pszAppRegistryName,
[out] BOOL *pfDefault
);
Parameters
[in] pszQuery
Type: LPCWSTR
A pointer to a null-terminated Unicode string that contains the file name extension or protocol of the application, such as .mp3 or http.
[in] atQueryType
Type: ASSOCIATIONTYPE
One of the ASSOCIATIONTYPE enumeration values that specifies the type of the application named in pszQuery, such as file name extension or MIME type.
[in] alQueryLevel
Type: ASSOCIATIONLEVEL
One of the ASSOCIATIONLEVEL enumeration values that specifies the level of association, such as per-user or machine. This is typically AL_EFFECTIVE.
[in] pszAppRegistryName
Type: LPCWSTR
A pointer to a null-terminated Unicode string that specifies the registered name of the application.
[out] pfDefault
Type: BOOL*
When this method returns, contains TRUE if the application is the default; or FALSE otherwise.
Return value
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | shobjidl_core.h (include Shobjidl.h) |