Function ImGuiStack_BeginVertical_Ptr 

pub unsafe fn ImGuiStack_BeginVertical_Ptr(
    ptr_id: *const c_void,
    size: ImVec2,
    align: f32,
)

Start a stack-layout vertical group using a pointer ID.

Safety

Requires an active Dear ImGui context and current window. ptr_id is used as an ID value only and is not dereferenced.