用VC写的DLL中含有以下代码int WINAPI OpenComport(S_COM_SETTING* setting);
e.g. :
S_COM_SETTING setting; //parameters by ComPort
setting.port = 1; //COM 1
setting.baud = 57600;
return _OpenComport(&setting);怎么在delphi中调用啊!!!!
e.g. :
S_COM_SETTING setting; //parameters by ComPort
setting.port = 1; //COM 1
setting.baud = 57600;
return _OpenComport(&setting);怎么在delphi中调用啊!!!!
type
TComSetting=record
port: smallint;//该参数需要参考C++的函数原型,字节长度需要一致,假定2字节smallint
baud: longint; //同上,假定是4字节longint
end;
PComSetting=^TComSetting;
function OpenComport(lpComSetting: PComSetting): longint; stdcall; external 'xxx.dll';调用var
ret: longint;
comSetting: TComSetting;
begin
comSetting.port := 1;
comSetting.band := 57600;
ret := OpenComport(@comSetting);
end;
或者
var
ret: longint;
lpComSetting: PComSetting;
begin
new(lpComSetting);
lpComSetting^.port := 1;
lpComSetting^.band := 57600;
ret := OpenComport(lpComSetting);
dispose(lpComSetting);
end;