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NF:mmdeviceapi.IMMDevice.OpenPropertyStore |
IMMDevice::OpenPropertyStore (mmdeviceapi.h) |
The OpenPropertyStore method retrieves an interface to the device's property store. |
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coreaudio\immdevice_openpropertystore.htm |
CoreAudio |
d13a5743-8b07-4876-ab9d-7a6bd60e7add |
12/05/2018 |
IMMDevice interface [Core Audio],OpenPropertyStore method, IMMDevice.OpenPropertyStore, IMMDevice::OpenPropertyStore, IMMDeviceOpenPropertyStore, OpenPropertyStore, OpenPropertyStore method [Core Audio], OpenPropertyStore method [Core Audio],IMMDevice interface, coreaudio.immdevice_openpropertystore, mmdeviceapi/IMMDevice::OpenPropertyStore |
mmdeviceapi.h |
Windows |
Windows Vista [desktop apps only] |
Windows Server 2008 [desktop apps only] |
Windows |
19H1 |
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The OpenPropertyStore method retrieves an interface to the device's property store.
The storage-access mode. This parameter specifies whether to open the property store in read mode, write mode, or read/write mode. Set this parameter to one of the following STGM constants:
STGM_READ
STGM_WRITE
STGM_READWRITE
The method permits a client running as an administrator to open a store for read-only, write-only, or read/write access. A client that is not running as an administrator is restricted to read-only access. For more information about STGM constants, see the Windows SDK documentation.
Pointer to a pointer variable into which the method writes the address of the IPropertyStore interface of the device's property store. Through this method, the caller obtains a counted reference to the interface. The caller is responsible for releasing the interface, when it is no longer needed, by calling the interface's Release method. If the OpenPropertyStore call fails, *ppProperties is NULL. For more information about IPropertyStore, see the Windows SDK documentation.
If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.
| Return code | Description |
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Parameter stgmAccess is not a valid access mode. |
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Parameter ppProperties is NULL. |
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Out of memory. |
In general, the properties in the device's property store are read-only for clients that do not perform administrative, system, or service functions.
For code examples that call the OpenPropertyStore method, see the following topics: