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Added README about transparent windows in Win32

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Sam Huang 2023-09-11 07:35:39 -07:00 committed by Sam Lantinga
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docs/README-windows.md
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@ -56,3 +56,11 @@ it change the value of `SDL_VIDEO_VULKAN` to 0 in `SDL_config_windows.h`. You
must install the [Vulkan SDK](https://www.lunarg.com/vulkan-sdk/) in order to
use Vulkan graphics in your application.
## Transparent Window Support
SDL uses the Desktop Window Manager (DWM) to create transparent windows. DWM is
always enabled from Windows 8 and above. Windows 7 only enables DWM with Aero Glass
theme.
However, it cannot be guaranteed to work on all hardware configurations (an example
is hybrid GPU systems, such as NVIDIA Optimus laptops).