在Win32程序中显示Dos调试窗口，可暂停（AllocConsole，WriteConsole，FreeConsole函数，GetStdHandle函数取得输入句柄）

在很多程序中，都可以看到程序运行中，会有一个Dos窗口，实时显示一些运行信息，这里就告诉大家是如何实现的，我们做个简单的，其实对控制台的操作还有很多，有兴趣的可以去查资料。

用到的API函数如下：

//创建控制台
AllocConsole;

//获取控制台窗口
GetStdHandle;

//向控制台输出信息
WriteConsole;

//释放控制台
FreeConsole;

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
  private
    { Private declarations }
    //控制台句柄
    h_Console:THandle;
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  p:PChar;
  num:Cardinal;
begin
  //获取控制台窗口
  h_Console := GetStdHandle(STD_OUTPUT_HANDLE);
  p := PChar(Edit1.Text);
  //向控制台输出信息
  WriteConsole(h_Console,p,Length(Edit1.Text),num,nil);
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  //创建控制台
  AllocConsole;
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  if h_Console =  then Exit;
  //释放控制台
  FreeConsole;
end;

end.

参考：http://www.cnblogs.com/key-ok/p/3429861.html

------------------------------------------------------------------------------------

function PauseConsole(Prompt: PAnsiChar): boolean;
var
  hStdIn, hStdOut: THandle;
  dwRd, dwWr, i: Cardinal;
  cBuf: array [..] of TInputRecord;
begin
  result := false;
  hStdIn := GetStdHandle(STD_INPUT_HANDLE);
  hStdOut := GetStdHandle(STD_OUTPUT_HANDLE);
  if ((hStdIn <> ) and (hStdOut <> )) then
  begin
     WriteFile(hStdOut,Prompt[],lstrlenA(Prompt),dwWr,nil);
     while ReadConsoleInput(hStdIn,cBuf[],,dwRd) do
     begin
       for i :=  to dwRd do
       begin
         if ((cBuf[i].EventType = KEY_EVENT) and (cBuf[i].Event.KeyEvent.bKeyDown)) then
         begin
           Result := true;
           exit;
         end;
       end;
     end;
  end;
end;

  try
    PauseConsole('Press a key to continue...');
  except
    on E:Exception do
      Writeln(E.Classname, ': ', E.Message);
  end;

参考：http://www.cnblogs.com/key-ok/p/3380446.html