Информация о BMP-файлах
Материал из DRKB
{
This tip show, how to get the filesize, width, height, bitcount and color used
from a bitmap.
Dieses Beispiel zeigt, wie man Dateigrosse, breite, hohe, 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
}
ID: 03781