ISimpleList::get_Count Property [C++]

Article
11/12/2009

The Count property is a read-only long that returns the number of items in the SimpleList object.

Definition

[C++]

HRESULT ISimpleList::get_Count(long*Count);

[Visual Basic]

Property Count As Long

Parameters

Count[C++]
[out, retval] A pointer to a long used to return the number of items in the SimpleList object.

[Visual Basic] None.

[C++]

Return Values

This method returns an HRESULT indicating whether it completed successfully. See the Error Values section for more details.

Error Values

[C++] This method returns S_OK (0x00000000) to indicate success and standard COM HRESULT error values to indicate failure. For more information about standard COM errors, see Standard COM Errors. Additional information may be available using the global Err object, which can be accessed using the API function GetErrorInfo. In particular, the GetDescription method of the IErrorInfo interface may return a text description of the error.

[Visual Basic] This property sets the Number property of the global Err object to S_OK (&H00000000) to indicate success and to standard COM error values to indicate failure. For more information about standard COM errors, see Standard COM Errors. Additional information may be available using the global Err object. In particular, the Description property may contain a text description of the error.

Remarks

[C++] The Count parameter points to valid data only if the method completes successfully.

The caller should always call this method before calling a SimpleList method that requires an array index in-value as a parameter (such as the Delete method).

For more information about memory ownership issues related to COM property and method parameters, see Managing COM Parameter Memory.