Function ImGuiStack_BeginVertical_Str 

pub unsafe fn ImGuiStack_BeginVertical_Str(
    str_id: *const c_char,
    size: ImVec2,
    align: f32,
)

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

Safety

Requires an active Dear ImGui context and current window. str_id must point to a valid NUL-terminated string for the duration of the call.