Сохранение изображения экрана в файле

На форме у меня стоит TImage (его можно сделать невидимым)

var

  Dwh : HWND; 
  DRect: TRect; 
  DescDC: HDC; 
  Canv: TCanvas;
  i: TJPEGImage;
begin
  try
    i := TJPEGImage.create;
    try
      Canv := TCanvas.Create();
      i.CompressionQuality := 100;
      image.Width := screen.width;
      image.height := screen.height;
      DWH := GetDesktopWindow;
      GetWindowRect(DWH, DRect);
      DescDC := GetDeviceContext(DWH);
      Canv.Handle := DescDC;
      DRect.Left := 0;
      DRect.Top := 0;
      DRect.Right := screen.Width;
      DRect.Bottom := screen.Height;
      Image.Canvas.CopyRect(DRect, Canv, DRect);
      i.assign(Image.Picture.Bitmap);
      I.SaveToFile('M:\MyFile.jpg');
      Canv.free;
    finally
      i.free;
    end;
  except
  end;

Автор: Vit

program ScrShop;
 
uses
Windows;
 
procedure ApiScrCapture(FileName: String);
type
   TScr = array [0..1] of Byte;
   PScr = ^TScr;
var
   hBmp       : hBitmap;
   DeskDC     : hDC;
   DC         : hDC;
   BFH        : BITMAPFILEHEADER;
   BIH        : tagBITMAPINFO;
   ScrX, ScrY : Integer;
   F          : File;
   ScrSize    : Cardinal;
   Bits       : PScr;
begin
   SCRX     := GetSystemMetrics(SM_CXSCREEN);
   SCRY     := GetSystemMetrics(SM_CYSCREEN);
   ScrSize  := ScrX * ScrY * 3;
 
   GetMem(Bits, ScrSize);
 
   DeskDC   := GetDC(0);
   hBmp     := CreateCompatibleBitmap(DeskDC, ScrX, ScrY);
   DC       := CreateCompatibleDC(DeskDC);
 
   SelectObject(DC, hbmp);
   BitBlt(DC, 0, 0, SCRX, SCRY, DeskDC, 0, 0, SrcCopy);
 
   with BFH do
   begin
     bfType      := $4D42;
     bfSize      := SCRX * SCRY * 3 + SizeOf(BFH) + SizeOf(BIH);
     bfReserved1 := 0;
     bfReserved2 := 0;
     bfOffBits   := SizeOf(BFH) + SizeOf(BIH);
   end;
 
   with BIH.bmiHeader do
   begin
    biSize         := sizeof(BIH);
    biWidth        := SCRX;
    biHeight       := SCRY;
    biPlanes       := 1;
    biBitCount     := 24;
    biCompression  := BI_RGB;
    biSizeImage    := ScrSize;
    biClrImportant := 0;
   end;
 
   GetDiBits(DC, hbmp, 0, SCRY, Bits, BIH, DIB_RGB_COLORS);
   DeleteObject(hbmp);
   AssignFile(F, FileName);
   Rewrite(F, 1);
   Blockwrite(F, BFH, SizeOf(BFH));
   Blockwrite(F, BIH, SizeOf(BIH));
   Blockwrite(F, bits^, ScrSize);
   CloseFile(F);
   FreeMem(Bits);
end;
 
begin
   ApiScrCapture('1.bmp');
end.

 
Автор: Arazel

Взято из https://forum.sources.ru

procedure TForm1.Button1Click(Sender: TObject);
var
  DC: HDC;
  Canva: TCanvas;
  B: TBitmap;
begin
  Canva := TCanvas.Create;
  B := TBitmap.Create;
  DC := GetDC(0);
  try
    Canva.Handle := DC;
    with Screen do
    begin
      B.Width := Width;
      B.Height := Height;
      B.Canvas.CopyRect(Rect(0, 0, Width, Height),
      Canva, Rect(0, 0, Width, Height));
      B.SaveToFile('c:\Мои документы\screentofile.bmp');
    end
  finally
    ReleaseDC(0, DC);
    B.Free;
    Canva.Free
  end
end;
 

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