GetInsets
BControlLook::GetInsets(frame_type frameType, background_type backgroundType,
BSplitLayout::GetInsets(float* left, float* top, float* right,
BSplitView::GetInsets(float* left, float* top, float* right,
BTextView::GetInsets(float* _left, float* _top, float* _right,
BTwoDimensionalLayout::GetInsets(float* left, float* top, float* right,
BALMLayout::GetInsets(float* left, float* top, float* right,
Area::GetInsets(float* left, float* top, float* right, float* bottom) const