RoInitialize function (roapi.h)
Initializes the Windows Runtime on the current thread with the specified concurrency model.
Syntax
HRESULT RoInitialize(
[in] RO_INIT_TYPE initType
);
Parameters
[in] initType
Type: RO_INIT_TYPE
The concurrency model for the thread. The default is RO_INIT_MULTITHREADED.
Return value
Type: HRESULT
This function can return the standard return values E_INVALIDARG, E_OUTOFMEMORY, and E_UNEXPECTED, as well as the following values.
| Return code | Description |
|---|---|
|
The Windows Runtime was initialized successfully on this thread. |
|
The Windows Runtime is already initialized on this thread. |
|
A previous call to RoInitialize specified the concurrency model for this thread as multithread apartment (MTA). This could also indicate that a change from neutral-threaded apartment to single-threaded apartment has occurred. |
Remarks
Use the RoInitialize function to initialize a thread in the Windows Runtime. All threads that activate and interact with Windows Runtime objects must be initialized prior to calling into the Windows Runtime.
Call the RoUninitialize function to close the Windows Runtime on the current thread. Each successful call to RoInitialize, including those that return S_FALSE, must be balanced by a corresponding call to RoUninitialize.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 8 [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2012 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | roapi.h |