dll调用解决办法

2012-03-19

dll调用function hi_32 hi_sdk_Init():THandlestdcallexternalHISDK.dll错误是Function needs result

dll调用
function hi_32 hi_sdk_Init():THandle;stdcall;external'HISDK.dll';
错误是 Function needs result type

hi_32 hi_sdk_Init()是初始化函数
result values HI_success表示成功 HI_failure表示失败

要怎么写这个返回值
谢谢

[解决办法]
试试这样：

Delphi(Pascal) code

type  TForm1 = class(TForm)  Button1: TButton;  Image1: TImage;  GroupBox1: TGroupBox;  procedure Button1Click(Sender: TObject);  private  { Private declarations }  public  { Public declarations }  end;  function hi_sdk_Init(var husb: THandle): Integer; stdcall; external'HISDK.dll'; //<--注意这里，添加一个var标识var  Form1: TForm1;  sdk_Init:THandle;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);begin  hi_sdk_Init(sdk_Init); //<--注意这里，这样调用end;end.

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dll调用解决办法