Calling a C function from within a Julia program

General Usage
, ,
21

Sorry, it should be Ref(MTKt_Region()).

22

Bingo! The latest version of that chk_ function is now

function chk_mtksetregionbypathblockrange()
    misr_path = convert(Int32, 37)
    misr_block1 = convert(Int32, 32)
    misr_block2 = convert(Int32, 40)
    region_ref = Ref(MTKt_Region())
    status = mtksetregionbypathblockrange!(misr_path, misr_block1, misr_block2, region_ref)
    region = region_ref[]
    println("region.lat = ", region.lat)
    println("region.lon = ", region.lon)
    println("region.xlat = ", region.xlat)
    println("region.ylon = ", region.ylon)
    return status
end

and the outcome is as follows:

julia> Revise.retry()

julia> using MISRToolkit

julia> status = chk_mtksetregionbypathblockrange()
region.lat = 67.28628518822661
region.lon = -95.22204196033839
region.xlat = 633462.5
region.ylon = 307862.5
MTK_SUCCESS::MTKt_status = 0x00000000

julia>

which exactly matches the documentation of that toolkit. Thanks a lot indeed!