question on use GUIPlus on windows 10 64bits

[oyster]

I read something in 
<https://github.com/khchen/wNim/blob/master/wNim/private/wImage.nim> like
    
    
    var
        width1, height1, width2, height2: int32
    
    
    Run

then
    
    
    if GdipGetImageWidth(gdipbmp1, cast[ptr UINT](&width1)) != Ok: return false
    
    
    Run

could it be better to write only `int32` or `UINT`?

I know nothing about the underneath windows API since I am not a professional 
programmer, and for most of the time I use python.