Function imgui_sys::igImageButton

pub unsafe extern "C" fn igImageButton(
    str_id: *const c_char,
    user_texture_id: ImTextureID,
    size: ImVec2,
    uv0: ImVec2,
    uv1: ImVec2,
    bg_col: ImVec4,
    tint_col: ImVec4
) -> bool