mainform.cpp

C++ BUILDER精彩编程实例集锦(源码) 第一部分 界面设计 第二部分 程序设置

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Mainform.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

#include "strstream.h"
#include "fstream.h"
#include "iomanip.h"
void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{
  try
  {
    int iLength=this->Edit1->Text.Length();
    if(iLength<1||StrToInt(this->Edit2->Text)>12)
      return;
    char *StrBuffer=new char[iLength];
    ostrstream ofstr(StrBuffer,iLength);
    ofstr<<setiosflags(ios::fixed|ios::showpoint)<<setprecision(StrToInt(this->Edit2->Text))<<StrToFloat(this->Edit1->Text)<<ends;
    this->Edit3->Text=StrBuffer;
  }
  catch(...)
  {
    MessageBox(Handle,"数字输入错误","信息提示",MB_OK);
    return;
  }
}
//---------------------------------------------------------------------------