mainform.cpp

C++ BUILDER精彩编程实例集锦(源码)2 第三部分 文件操作 第四部分 图像处理

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

#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)
{
  Graphics::TBitmap *MyBmp=new Graphics::TBitmap();
  TCanvas* MyCanvas=new TCanvas();
  HDC MyDC=GetWindowDC(NULL);
  MyCanvas->Handle=MyDC;
  TRect MyRect=Rect(0,0,Screen->Width,Screen->Height);
  MyBmp->Width=MyRect.right;
  MyBmp->Height=MyRect.Bottom;
  MyBmp->Canvas->CopyRect(MyRect,MyCanvas,MyRect);
  ReleaseDC(0,MyDC);
  MyCanvas->Handle=0;
  this->Image1->Picture->Bitmap=MyBmp;
  delete MyCanvas;
  delete MyBmp;
  MessageBox(Handle,"拷贝当前屏幕图像操作成功！","信息提示",MB_OK);
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn3Click(TObject *Sender)
{
   this->Close();
}
//---------------------------------------------------------------------------

void __fastcall TForm1::BitBtn2Click(TObject *Sender)
{
   if(this->SavePictureDialog1->Execute())
   {
      AnsiString StrFileName=this->SavePictureDialog1->FileName;
      StrFileName+=".bmp";
      this->Image1->Picture->SaveToFile(StrFileName);
      MessageBox(Handle,"保存当前屏幕图像操作成功！","信息提示",MB_OK);
   }
}
//---------------------------------------------------------------------------