delphi 获取外部程序句柄与发送消息

源码

unit Unit1;

interface

uses

Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

Dialogs, ShellAPI, StdCtrls;

type

TForm1 = class(TForm)

btn1: TButton;

mmo1: TMemo;

procedure btn1Click(Sender: TObject);

procedure FormCreate(Sender: TObject);

procedure FormDestroy(Sender: TObject);

private

{ Private declarations }

public

{ Public declarations }

TSL: TStringList;

end;

var

Form1: TForm1;

implementation

{$R *.dfm}

function EnumChildWndProc(AhWnd: LongInt;

AlParam: lParam): boolean; stdcall;

var

WndClassName: array[0..254] of Char;

WndCaption: array[0..254] of Char;

cRect: TRect;

begin

GetClassName(AhWnd, wndClassName, 254); //获取类名

GetWindowText(aHwnd, WndCaption, 254); //获取控件caption

GetWindowRect(aHwnd, cRect); //获取控件的Rect

with form1.mmo1 do

begin

if (string(wndClassName) = 'TEdit') or (string(wndCaption) = '确定')

or (string(wndClassName) = 'TComboBox') then

begin

Form1.TSL.Add(IntToStr(cRect.Top) + '=' + IntToStr(AhWnd));

//把句柄保存下来备用

lines.add(string(wndClassName));

lines.add(string(wndCaption));

Lines.Add(IntToStr(cRect.Top) + ' ' + IntToStr(AhWnd) + ' ' + IntToStr(aHwnd));

lines.add('-------');

end;

result := true;

end;

procedure TForm1.btn1Click(Sender: TObject);

var

FrmHandle: THandle;

name: string;

begin

ShellExecute(self.Handle, 'open', 'F:\zzx\PLSQL\plsqldev.exe', nil, nil, SW_HIDE);

//打开外部应用程序使用 ShellExecute需引用 ShellAPI

Sleep(2000); //休眠2秒为了能获取到窗体句柄

FrmHandle := FindWindow(nil, PChar('Oracle 登录')); //获取pl/sql登录窗体的句柄

if FrmHandle <> 0 then

begin

EnumChildWindows(FrmHandle, @EnumChildWndProc, 0); //遍历登录窗体里面的子控件获取其句柄

end

else MessageBox(self.handle, '没找到该窗口句柄', '提示', 0);

name := 'name';

SendMessage(StrToInt(TSL.ValueFromIndex[0]), WM_SETTEXT, 0, LPARAM(name)); //name

SendMessage(StrToInt(TSL.ValueFromIndex[1]), WM_SETTEXT, 0, LPARAM(name)); //PW

SendMessage(StrToInt(TSL.ValueFromIndex[2]), WM_SETTEXT, 0, LPARAM(name)); //server

//上面是向各个子控件（Edit）发送设置文本消息特殊原因统一写成了name 可以自行编写其他的

// SendMessage(StrToInt(TSL.ValueFromIndex[3]), WM_LBUTTONDOWN, 0, 0); //鼠标按下

// SendMessage(StrToInt(TSL.ValueFromIndex[3]), WM_LBUTTONUP, 0, 0); // 鼠标抬起

// SendMessage(StrToInt(TSL.ValueFromIndex[3]), WM_KEYDOWN, VK_DOWN, 0); // 发送向下键

// SendMessage(StrToInt(TSL.ValueFromIndex[3]), WM_LBUTTONDOWN, 0, 0); //鼠标按下

// SendMessage(StrToInt(TSL.ValueFromIndex[3]), WM_LBUTTONUP, 0, 0); // 鼠标抬起

//这里是选择ComboBox的第二项 sysdba用

SendMessage(StrToInt(TSL.ValueFromIndex[4]), BM_CLICK, 0, 0);

//点击确定按钮登录

end;

procedure TForm1.FormCreate(Sender: TObject);

begin

TSL := TStringList.Create;

TSL.Sorted := True;

end;

procedure TForm1.FormDestroy(Sender: TObject);

begin

FreeAndNil(TSL);

end;

end.

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