Question

所以我尝试在ShellExecute中使用变量，但在编译[DCC Error] Unit1.pas(44): E2010 Incompatible types: 'string' and 'PWideChar'

时总是会出现此错误

我只有2个变量，它们都是字符串ssid和pass 错误所在的行：ShellExecute(0, nil, 'cmd.exe', '/c netsh wlan set hostednetwork ssid=' + ssid 'key=' + pass, nil, HIDE_WINDOW);

如果您现在注意到我正在尝试制作一个使用cmd来设置，停止和启动热点的程序。如果我使用这一行ShellExecute(0, nil, 'cmd.exe', '/c netsh wlan set hostednetwork ssid=VirtualRouter key=12345678', nil, HIDE_WINDOW);，它就可以了。

项目代码：

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ShellAPI, StdCtrls;

type
  TSSID = class(TForm)
    lblSSID: TLabel;
    edtSSID: TEdit;
    lblPASS: TLabel;
    edtPASS: TEdit;
    btnConfig: TButton;
    btnStart: TButton;
    btnRestart: TButton;
    btnStop: TButton;
    lblname: TLabel;
    lblname2: TLabel;
    procedure btnConfigClick(Sender: TObject);
    procedure btnStartClick(Sender: TObject);
    procedure btnStopClick(Sender: TObject);
    procedure btnRestartClick(Sender: TObject);
  private
    { Private declarations }
  public
    ssid: String;
    pass: String;
  end;

var
  SSID: TSSID;

implementation

{$R *.dfm}

procedure TSSID.btnConfigClick(Sender: TObject);
begin
  ssid := edtSSID.Text;
  pass := edtPASS.Text;
  lblname2. Caption := edtSSID.Text;
  ShellExecute(0, nil, 'cmd.exe', '/c netsh wlan set hostednetwork ssid=' + ssid 'key=' + pass, nil, HIDE_WINDOW);
end;

procedure TSSID.btnRestartClick(Sender: TObject);
begin

  ShellExecute(0, nil, 'cmd.exe', '/c netsh wlan stop hostednetwork', nil, HIDE_WINDOW);
  ShellExecute(0, nil, 'cmd.exe', '/c netsh wlan start hostednetwork', nil, HIDE_WINDOW);

end;

procedure TSSID.btnStartClick(Sender: TObject);
begin

  ShellExecute(0, nil, 'cmd.exe', '/c netsh wlan start hostednetwork', nil, HIDE_WINDOW);

end;

procedure TSSID.btnStopClick(Sender: TObject);
begin

  ShellExecute(0, nil, 'cmd.exe', '/c netsh wlan stop hostednetwork', nil, HIDE_WINDOW);

end;

end.

有任何帮助吗？谢谢。是的，我是德尔福的新人，很抱歉，如果我想做什么不会工作

Answer 1

'/c netsh wlan set hostednetwork ssid=' + said 'key=' + pass

这错过了+而你的意思是：

'/c netsh wlan set hostednetwork ssid=' + said + 'key=' + pass

此表达式的类型为字符串，但ShellExecute期望提供类型为PChar的参数。将您的字符串转换为PChar，如下所示：

PChar('/c netsh wlan set hostednetwork ssid=' + ssid + 'key=' + pass)

E2010不兼容的类型：'string'和'PWideChar'

1 个答案: