UMG ScrollBox InsertChild

参照 SScrollBoxSlot中的AddSlot方法, 增加一个新的Insert函数即可

/** Adds a slot to SScrollBox */
SScrollBox::FSlot& SScrollBox::AddSlot()
{
    SScrollBox::FSlot& NewSlot = *new SScrollBox::FSlot();
    ScrollPanel->Children.Add( &NewSlot );

    return NewSlot;
}

/** Adds a slot to SScrollBox */

SScrollBox::FSlot& SScrollBox::AddSlotAt(int32 Index)

{
    SScrollBoxExt::FSlot& NewSlot = *new SScrollBoxExt::FSlot();
    ScrollPanel->Children.Insert(&NewSlot, Index);

    return NewSlot;
}