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...get informations about bmp files?
Autor: Simon Grossenbacher
Homepage: http://www.swissdelphicenter.ch
[ Print tip ]  

Tip Rating (3):  
     


{
  This tip show, how to get the filesize, width, height, bitcount and color used
  from a bitmap.

  Dieses Beispiel zeigt, wie man Dateigrösse, breite, höhe, Farbtiefe und Farbanzahl
  von einem Bitmap ausliest.
}


procedure TForm1.Button1Click(Sender: TObject);
var
  
fileheader: TBitmapfileheader;
  infoheader: TBitmapinfoheader;
  s: TFilestream;
begin
  
s := TFileStream.Create('c:\YourBitmap.bmp', fmOpenRead);
  try
    
s.Read(fileheader, SizeOf(fileheader));
    s.Read(infoheader, SizeOf(infoheader));
  finally
    
s.Free;
  end;
  listbox1.Items.Clear;
  listbox1.Items.Add('Filesize:    ' + IntToStr(fileheader.bfSize));
  listbox1.Items.Add('Width:       ' + IntToStr(infoheader.biWidth));
  listbox1.Items.Add('Height:      ' + IntToStr(infoheader.biHeight));
  listbox1.Items.Add('BitCount:    ' + IntToStr(infoheader.biBitCount));
  listbox1.Items.Add('Used:        ' + IntToStr(infoheader.biClrUsed));
end;

{
  BitCount:
  1 = black/white
  4 = 16 colors
  8 = 256 colors
}


 

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