Types of actual and formal var parameters must be identical这个错误指什么？

[xfdlxf]

在此句出现：readfile(iu_file,ls_buffer,lu_numbytes,lu_bytesread,lstr_locstruct)

[miky]

形参与实参必须一致

[aiirii]

要參照這句代碼的上面的代碼

function ReadFile(hFile: THandle; var Buffer; nNumberOfBytesToRead: DWORD;
var lpNumberOfBytesRead: DWORD; lpOverlapped: POverlapped): BOOL; stdcall;

好象說你參數的類型與聲明的不一致

[xfdlxf]

定义如下：var iu_file:integer;
var lu_bytesread,lu_numbytes:integer;
var ls_buffer:array[1..100]of char;
var lstr_locstruct:Poverlapped;
请问爱的眼睛：这样是否有问题，另外各初始值该如何赋值？谢谢

[aiirii]

var iu_file:integer;
lu_bytesread,lu_numbytes: cardinal; //這里
ls_buffer:array[1..100]of char;
lstr_locstruct:Poverlapped;