mainform.cpp

来自「C++ BUILDER精彩编程实例集锦(源码)2 第三部分 文件操作 第四部」· C++ 代码 · 共 40 行

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

#include <vcl.h>
#pragma hdrstop

#include "Mainform.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TForm1::BitBtn1Click(TObject *Sender)
{ //镜像图像
  Graphics::TBitmap *pBmp1=new Graphics::TBitmap();
  Graphics::TBitmap *pBmp2=new Graphics::TBitmap();
  Byte *pB1,*pB2;
  pBmp1->Assign(this->Image1->Picture->Bitmap);
  pBmp2->Assign(this->Image1->Picture->Bitmap);
  for(int y=0;y<pBmp1->Height;y++)
  {
     pB1=(Byte*)pBmp1->ScanLine[y];
     pB2=(Byte*)pBmp2->ScanLine[y];
     for(int x=0;x<pBmp1->Width*3/2;x++)
     {
       pB2[x]=pB1[pBmp1->Width*3-1-x];
       pB2[pBmp1->Width*3-1-x]=pB1[x];
     }
  }
  this->Image1->Canvas->Draw(0,0,pBmp2);
  delete pBmp1;
  delete pBmp2;
}
//---------------------------------------------------------------------------