SetItemWeight
void SetItemWeight(int32 index, float weight);
void SetItemWeight(int32 index, float weight,
void SetItemWeight(BLayoutItem* item, float weight);
view->SetItemWeight(i, weight, i == view->CountItems() - 1);
SetItemWeight(i, weight, false);
SetItemWeight(item, weight);
SetItemWeight(item, weight);
SetItemWeight(item, weight);
SetItemWeight(splitter, 0);
SetItemWeight(item, 1);
void SetItemWeight(int32 index, float weight,
void SetItemWeight(BLayoutItem* item, float weight);
fSplitLayout->SetItemWeight(index, weight, invalidateLayout);
fSplitLayout->SetItemWeight(item, weight);
fMainSplitView->SetItemWeight(0, leftWeight, false);
fMainSplitView->SetItemWeight(1, rightWeight, true);