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 36 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)
{ //产生马赛克效果
   HDC MyDC=GetDC(this->Handle);
   Randomize();
   for(int i=0;i<this->Width;i+=5)
     for(int j=0;j<this->Height;j+=5)
     {
       int Red=rand()%255;
       int Green=rand()%255;
       int Blue=rand()%255;
       for(int k=i;k<i+4;k++)
        for(int l=j;l<j+4;l++)
        {
         SetPixel(MyDC,k,l,RGB(Red,Green,Blue));
        }
     }
}
//---------------------------------------------------------------------------