IWMPQuery::addCondition method (wmp.h)
[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The addCondition method adds a condition to the compound query using AND logic.
Syntax
HRESULT addCondition(
[in] BSTR bstrAttribute,
[in] BSTR bstrOperator,
[in] BSTR bstrValue
);
Parameters
[in] bstrAttribute
String containing the attribute name.
[in] bstrOperator
String containing the operator. See Remarks for supported values.
[in] bstrValue
String containing the attribute value.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
Remarks
Conditions contained in a compound query are organized into condition groups. Multiple conditions within a condition group are always concatenated by using AND logic. Condition groups are always concatenated to each other by using OR logic. To start a new condition group, call IWMPQuery::beginNextGroup.
Compound queries using IWMPQuery are not case sensitive.
A list of values for the bstrAttribute parameter can be found in the Alphabetical Attribute Reference section.
The following table lists the supported values for bstrOperator.
| String | Applies To |
|---|---|
| BeginsWith | Strings |
| Contains | Strings |
| Equals | All types |
| GreaterThan | Numbers, Dates |
| GreaterThanOrEquals | Numbers, Dates |
| LessThan | Numbers, Dates |
| LessThanOrEquals | Numbers, Dates |
| NotBeginsWith | Strings |
| NotContains | Strings |
| NotEquals | All types |
Windows Media Player 10 Mobile: This method is not supported.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Media Player 11. |
| Target Platform | Windows |
| Header | wmp.h |
| DLL | Wmp.dll |
See also
Alphabetical Attribute Reference
IWMPMediaCollection2::createQuery
IWMPMediaCollection2::getPlaylistByQuery