www.pudn.com > C++ Builder 6 编程实例教程.zip > MemoControl.cpp, change:2002-04-14,size:2553b

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#include <vcl.h> 
#pragma hdrstop 
 
#include "MemoControl.h" 
//--------------------------------------------------------------------------- 
#pragma package(smart_init) 
#pragma resource "*.dfm" 
TForm1 *Form1; 
//--------------------------------------------------------------------------- 
__fastcall TForm1::TForm1(TComponent* Owner) 
        : TForm(Owner) 
{ 
} 
//--------------------------------------------------------------------------- 
 
void __fastcall TForm1::FormCreate(TObject *Sender) 
{ 
Form1->Memo1->Clear(); 
//清空文本框 
Form1->OpenDialog1->Title="请选择一个文本文件："; 
//设置对话框标题 
Form1->OpenDialog1->Filter="All Files(*.*)|*.*|Text Files(*.txt)|*.txt"; 
//设置文件过滤条件 
Form1->OpenDialog1->DefaultExt=String("TXT"); 
//设置缺省扩展名 
Form1->SaveDialog1->Title="请选择一个文本文件："; 
//设置对话框标题 
Form1->SaveDialog1->Filter="All Files(*.*)|*.*|Text Files(*.txt)|*.txt"; 
//设置文件过滤条件 
Form1->SaveDialog1->DefaultExt=String("TXT"); 
//设置缺省扩展名 
Form1->Button2->Enabled=false; 
//设置按钮有效状态 
Form1->FontDialog1->Font=Form1->Memo1->Font; 
Form1->ColorDialog1->Color=Form1->Memo1->Color; 
//对话框的初始化 
} 
//--------------------------------------------------------------------------- 
 
void __fastcall TForm1::Button1Click(TObject *Sender) 
{ 
if (Form1->OpenDialog1->Execute()) 
   //打开一个对话框 
   { 
   Form1->Memo1->Lines->LoadFromFile(Form1->OpenDialog1->FileName); 
   //打开一个文件 
   Form1->Button2->Enabled=true; 
   //设置按钮有效状态 
   } 
} 
//--------------------------------------------------------------------------- 
 
void __fastcall TForm1::Button2Click(TObject *Sender) 
{ 
if (Form1->SaveDialog1->Execute()) 
   //显示一个对话框 
   { 
   Form1->Memo1->Lines->SaveToFile(Form1->SaveDialog1->FileName); 
   //保存文件 
   } 
} 
//--------------------------------------------------------------------------- 
 
void __fastcall TForm1::Button3Click(TObject *Sender) 
{ 
if (Form1->FontDialog1->Execute()) 
    //打开一个对话框 
    { 
    Form1->Memo1->Font=Form1->FontDialog1->Font; 
    //设置控件中文本显示字体 
    } 
} 
//--------------------------------------------------------------------------- 
 
void __fastcall TForm1::Button4Click(TObject *Sender) 
{ 
if (Form1->ColorDialog1->Execute()) 
   //打开一个对话框 
   { 
   Form1->Memo1->Color=Form1->ColorDialog1->Color; 
   //设置控件背景色 
   } 
} 
//---------------------------------------------------------------------------