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API > API/Runtime > API/Runtime/ApplicationCore > API/Runtime/ApplicationCore/FNullWindow
Description
Native windows should implement SetWindowFocus to let the OS know that a window has taken focus. Slate handles focus on a per widget basis internally but the OS still needs to know what window has focus for proper message routing
Virtual Inheritance
- FGenericWindow::SetWindowFocus → FNullWindow::SetWindowFocus
| Name | SetWindowFocus |
| Type | function |
| Header File | /Engine/Source/Runtime/ApplicationCore/Public/Null/NullWindow.h |
| Include Path | #include "Null/NullWindow.h" |
| Source | /Engine/Source/Runtime/ApplicationCore/Private/Null/NullWindow.cpp |
virtual void SetWindowFocus()