检测ID卡的输入或者是其它卡的输入。
由于ID卡或者是其它的一些不同类型的卡,它们只是负责模拟键盘的录入,但是,它们在录入的时候没有一个很好的标识位可以让我们知道当前输入的是客户手工录入的字符串还是ID卡读入的字符串,我相信,很多人在做这样的开发时应该都遇到过这种郁闷的事,有些人的做法呢,就是在特定的位置录入字符串就算是ID卡的读取了,我想,这样的方法很多人都不喜欢的了,感觉很不科学。因此,这模块就是应这种要求而设计的,可以让你在任何情况下,应该说,限制很少的情况下,满足了题目的要求。废话不多说,先看看模块代码:
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下面是它的使用方法:(对象不用创建的,引用了该模块就可以使用,应该它在模块引用的时候就已经创建出来的了。)
Application.OnMessage:=IDCheckObj.APPIntercept;(首先这里设置截获应用程序的消息。)
IDCheckObj.OnIDCheckResult:=OnIDCheckReturn;(设置检测到ID卡读取后要执行的事件。)
调用的方法就是这么简单了。
下面的是特殊情况下调用的方法:
IDCheckObj.OnIDCheckResult_SP:=OnIDCheckReturn;(OnIDCheckResult是默认的执行事件,如果你在某个窗体里面要求检测到ID卡读取后执行比较特殊的事件,而不执行默认事件的话,就要设置这个事件了,记得窗体不再激活的时候要把它设置为NULL哦,否者,其它地方会执行OnIDCheckResult_SP这个事件的)
介绍一个这个事件过程是如何定义的:procedure OnIDCheckReturn(IDCheckResult:string);
下面是我的默认事件所执行的过程,可以参考一下:
procedure TMainForm.OnIDCheckReturn(IDCheckResult: string);
var
frm_IDCardCon:Tfrm_IDCardControl;
begin
frm_IDCardCon:=Tfrm_IDCardControl.Create(IDCheckResult);
if frm_IDCardCon.VIP_NO<>'' then
frm_IDCardCon.ShowModal
else
frm_IDCardCon.Free;
end;
IDCheckResult:就是检测到的那串字符串。我这里是检测到就弹出窗体。不知道我这东西是否适合大家使用呢?不管适用与否,我都已经用在客户那里啦,反应挺好的。
原创作品出自努力偷懒,转载请说明文章出处:http://blog.csdn.net/kfarvid或 http://www.cnblogs.com/kfarvid/
转载于:https://www.cnblogs.com/kfarvid/archive/2008/02/24/2251447.html
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