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API > API/Runtime > API/Runtime/SlateCore > API/Runtime/SlateCore/Widgets > API/Runtime/SlateCore/Widgets/SBoxPanel
References
| Module | SlateCore |
| Header | /Engine/Source/Runtime/SlateCore/Public/Widgets/SBoxPanel.h |
| Include | #include "Widgets/SBoxPanel.h" |
bool IsValidSlotIndex
&40;
int32 Index
&41; const
if it's a valid index slot index.