ITileEngineGraphicsDevice::Unlock (Windows Embedded CE 6.0)
1/6/2010
This function unlocks access to the ITileEngineGraphicsDevice interface, which makes it possible for other threads in the same process to access the display driver after your thread has finished rendering its window.
Syntax
HRESULT Unlock();
Return Value
The following table shows the possible return values.
Value |
Description |
S_OK |
Function completed successfully. |
Remarks
You can implement the ITileEngineGraphicsDevice::Lock and ITileEngineGraphicsDevice::Unlock functions to serialize access to the ITileEngineGraphicsDevice interface, if needed. For example, most OpenGL ES drivers are not thread-safe. If both ITileEngineGraphicsDevice (from Internet Explorer Embedded) and ICustomGraphicsDevice (from xxxrframeworkextxx) call OpenGL ES, the two classes should synchronize with a critical section or mutex object.
If the underlying graphics hardware does not need to be protected from concurrent access, you can implement the Lock and Unlock functions to immediately return S_OK.
Requirements
| Header | TileEngineRenderPlugin.h |
| Library | TileEngineRenderPlugin.lib |
See Also
Reference
ITileEngineGraphicsDevice
ITileEngineGraphicsDevice::Lock