IP地址输入框制作

最新推荐文章于 2025-06-18 09:58:14 发布

原创最新推荐文章于 2025-06-18 09:58:14 发布 · 1.7k 阅读

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CC 4.0 BY-SA版权

文章标签：

#integer #string #forms #internet #interface #windows

该博客介绍了一个自定义的IP地址输入框组件的实现，包括获取和设置IP地址的功能，以及处理非法IP地址的验证。通过Delphi的TForm和相关控件，实现了窗口消息的处理，如IPM_SETADDRESS和IPM_GETADDRESS，确保输入的IP地址有效。

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unit IpInput;

interface

uses
Windows,Dialogs,SysUtils,Classes,Graphics,Forms,Controls,StdCtrls,Buttons,ExtCtrls,
ComCtrls,Commctrl;

type
TInputIpFrm = class(TForm)
    SpdBfdftnCancle: TLabel;
    SpdBtnOK: TSpeedButton;
    SpdBtnCancle: TSpeedButton;
    procedure FormShow(Sender: TObject);
    procedure SpdBtnOKClick(Sender: TObject);
    procedure SpdBtnCancleClick(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure FormCreate(Sender: TObject);
private

public
    ipEdit:HWND;
    m_CommunicationIP:String;
    ipAddress:integer;

    procedure GetIPNum(strIniIP:String;out nFirst,nSecond,nThird,nForth:integer);
end;

var
InputIpFrm: TInputIpFrm;

implementation

{$R *.dfm}

procedure TInputIpFrm.GetIPNum(strIniIP:String;out nFirst,nSecond,nThird,nForth:integer);
var
    str,strNum,strTemp:String;
begin
    str:='.';
    try
        strTemp:=strPos(PChar(strIniIP),PChar(str));
        strNum:=Copy(strIniIP,1,Length(strIniIP) - Length(strTemp));
        nFirst:=StrToInt(strNum);

        strIniIP:=Copy(strTemp,2, Length(strTemp));
        strTemp:=strPos(PChar(strIniIP),PChar(str));
        strNum:=Copy(strIniIP,1,Length(strIniIP) - Length(strTemp));
        nSecond:=StrToInt(strNum);

        strIniIP:=Copy(strTemp,2, Length(strTemp));
        strTemp:=strPos(PChar(strIniIP),PChar(str));
        strNum:=Copy(strIniIP,1,Length(strIniIP) - Length(strTemp));
        nThird:=StrToInt(strNum);

        strIniIP:=Copy(strTemp,2, Length(strTemp));
        strTemp:=strPos(PChar(strIniIP),PChar(str));
        strNum:=Copy(strIniIP,1,Length(strIniIP) - Length(strTemp));
        nForth:=StrToInt(strNum);
    except
        nFirst:=192;
        nSecond:=168;
        nThird:=0;
        nForth:=198;
        showmessage('');
    end;

end;

procedure TInputIpFrm.FormShow(Sender: TObject);
var
nFirst,nSecond,nThird,nForth:integer;
begin
GetIPNum(m_CommunicationIP, nFirst, nSecond, nThird, nForth);

ipAddress:=MAKEIPADDRESS(nFirst,nSecond,nThird,nForth);//初始化 IP地址

    SendMessage(ipEdit,IPM_SETADDRESS,0,ipAddress);//show   the   current   address

    SendMessage(ipEdit,IPM_SETFOCUS,0,0); //select   the   first   field
     { }
end;

procedure TInputIpFrm.SpdBtnOKClick(Sender: TObject);
begin
SendMessage(ipEdit,IPM_GETADDRESS,0,longint(@ipAddress));

    if ipAddress = 0   then
    begin
        beep;
        SendMessage(ipEdit,IPM_SETFOCUS,0,0);//select   the   first   field
        Application.MessageBox('IP地址非法!','警告',mb_OK + MB_ICONWARNING);
        modalResult:=mrNone;
    end
    else
    begin
        m_CommunicationIP:=IntToStr(FIRST_IPADDRESS(ipAddress))+'.'
                          +IntToStr(SECOND_IPADDRESS(ipAddress))+'.'
                          +IntToStr(THIRD_IPADDRESS(ipAddress))+'.'
                          +IntToStr(FOURTH_IPADDRESS(ipAddress));
                      { }
        self.Close;
    end;

end;

procedure TInputIpFrm.SpdBtnCancleClick(Sender: TObject);
begin
self.Close;
end;

procedure TInputIpFrm.FormDestroy(Sender: TObject);
begin
InputIpFrm:=nil;
end;

procedure TInputIpFrm.FormCreate(Sender: TObject);
begin
InitCommonControl(ICC_INTERNET_CLASSES);

ipEdit:=CreateWindow(WC_IPADDRESS,nil,WS_CHILD or WS_VISIBLE,
65,20,160,25,self.Handle,0,hInstance,nil);

end;

end.