memocontrol.cpp

C++ Builder 6 编程实例教程-北京希望电子出版社出版

//---------------------------------------------------------------------------
#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
   }
}
//---------------------------------------------------------------------------