C++ Bulider的螢幕抓取程式

[魔術王子]

//Unit1.cpp

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

#include <vcl.h>
#pragma hdrstop

#include <clipbrd.hpp>
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
    : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
    HDC DC;
    WindowState = wsMinimized;
    DC = GetDC(0);
    Image1->Width=Screen->Width;
    Image1->Height=Screen->Height;
    BitBlt(Image1->Canvas->Handle, 0, 0, Screen->Width, Screen->Height, DC, 0, 0, SRCCOPY);
    Image1->Refresh();
    ReleaseDC(0, DC);
    WindowState = wsNormal;
    Button2->Enabled=true;
    Button3->Enabled=true;}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button2Click(TObject *Sender)
{
    Clipboard()->Assign(Image1->Picture->Bitmap);     
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button3Click(TObject *Sender)
{
    if (SavePictureDialog1->Execute())
        Image1->Picture->SaveToFile(SavePictureDialog1->FileName);
}
//---------------------------------------------------------------------------
void __fastcall TForm1::Button4Click(TObject *Sender)
{
    Close();    
}
//---------------------------------------------------------------------------

PS:粗體部分需自行KeyIn

[魔術王子]

Unit1.dfm
==============

object Form1: TForm1
  Left = 192
  Top = 114
  Width = 707
  Height = 480
  Caption = 'Form1'
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'MS Sans Serif'
  Font.Style = []
  OldCreateOrder = False
  PixelsPerInch = 96
  TextHeight = 13
  object Splitter1: TSplitter
    Left = 589
    Top = 0
    Width = 3
    Height = 446
    Cursor = crHSplit
    Align = alRight
  end
  object ScrollBox1: TScrollBox
    Left = 0
    Top = 0
    Width = 589
    Height = 446
    Align = alClient
    TabOrder = 0
    object Image1: TImage
      Left = 0
      Top = 0
      Width = 105
      Height = 105
    end
  end
  object Panel1: TPanel
    Left = 592
    Top = 0
    Width = 107
    Height = 446
    Align = alRight
    TabOrder = 1
    object Button1: TButton
      Left = 14
      Top = 8
      Width = 75
      Height = 25
      Caption = '抓取'
      TabOrder = 0
      OnClick = Button1Click
    end
    object Button2: TButton
      Left = 14
      Top = 56
      Width = 75
      Height = 25
      Caption = '存剪貼簿'
      Enabled = False
      TabOrder = 1
      OnClick = Button2Click
    end
    object Button3: TButton
      Left = 14
      Top = 88
      Width = 75
      Height = 25
      Caption = '存檔'
      Enabled = False
      TabOrder = 2
      OnClick = Button3Click
    end
    object Button4: TButton
      Left = 16
      Top = 128
      Width = 75
      Height = 25
      Caption = '離開'
      TabOrder = 3
      OnClick = Button4Click
    end
  end
  object SavePictureDialog1: TSavePictureDialog
    DefaultExt = '.bmp'
    Filter = 'Bitmaps (*.bmp)|*.bmp'
    Left = 104
    Top = 144
  end
end

[魔術王子]

Unit1.h

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

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include <ExtCtrls.hpp>
#include <Dialogs.hpp>
#include <ExtDlgs.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published:	// IDE-managed Components
    TScrollBox *ScrollBox1;
    TImage *Image1;
    TPanel *Panel1;
    TButton *Button1;
    TButton *Button2;
    TButton *Button3;
    TSplitter *Splitter1;
    TSavePictureDialog *SavePictureDialog1;
    TButton *Button4;
    void __fastcall Button1Click(TObject *Sender);
    void __fastcall Button2Click(TObject *Sender);
    void __fastcall Button3Click(TObject *Sender);
    void __fastcall Button4Click(TObject *Sender);
private:	// User declarations
public:		// User declarations
    __fastcall TForm1(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif