Title: SHGetFileInfo (API)
Question: How to use the SHGetFileInfo API
Answer:
unit Unit1;
// This app shows how to get different information about
// a file, drive or directory.
// !!! BE SURE TO INCLUDE 'ShellApi' IN YOUR USES-CLAUSE !!!
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ShellApi, FileCtrl;
type
TForm1 = class(TForm)
Button1: TButton;
Label1: TLabel;
Edit1: TEdit;
Label2: TLabel;
Edit2: TEdit;
Label3: TLabel;
Edit3: TEdit;
Label4: TLabel;
FileListBox1: TFileListBox;
DirectoryListBox1: TDirectoryListBox;
DriveComboBox1: TDriveComboBox;
Label5: TLabel;
Edit4: TEdit;
Edit5: TEdit;
Label6: TLabel;
procedure Button1Click(Sender: TObject);
procedure FormPaint(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
FileInfo : SHFILEINFO;
implementation
{$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);
var filename : string;
attrs : string;
attributes : integer;
begin
form1.repaint;
if filelistbox1.ItemIndex - 1 then
begin
filename := FileListBox1.FileName;
end
else
begin
filename := DirectoryListBox1.Directory;
end;
edit1.text := filename;
//Get The DisplayName
SHGetFileInfo(PChar(FileName),0,FileInfo,SizeOf(FileInfo),SHGFI_DISPLAYNAME);
edit2.text := FileInfo.szDisplayName;
//Get The TypeName
SHGetFileInfo(PChar(FileName),0,FileInfo,SizeOf(FileInfo),SHGFI_TYPENAME);
edit3.text := FileInfo.szTypeName;
//Get The Icon That Represents The File
SHGetFileInfo(PChar(FileName),0,FileInfo,SizeOf(FileInfo),SHGFI_ICON);
Drawicon(canvas.handle,5,170,FileInfo.hIcon);
form1.repaint;
//Get The Files' Attributes
attributes := GetFileAttributes(PChar(FileName));
attrs := '';
If Bool(attributes and FILE_ATTRIBUTE_READONLY) then attrs := attrs + 'R';
If Bool(attributes and FILE_ATTRIBUTE_HIDDEN) then attrs := attrs + 'H';
If Bool(attributes and FILE_ATTRIBUTE_SYSTEM) then attrs := attrs + 'S';
If Bool(attributes and FILE_ATTRIBUTE_ARCHIVE) then attrs := attrs + 'A';
edit4.text := attrs;
//Get The Date & Time When The File Was Last Changed
try
edit5.text := DateTimeToSTr(FileDateToDateTime(FileAge(FileName)));
except
// In Case you didn't select a file (for directories & drives)
on EConvertError do
edit5.text := 'Not Available';
end;
end;
procedure TForm1.FormPaint(Sender: TObject);
begin
//Redraws the icon when you move the form off the screen.
Drawicon(canvas.handle,5,170,FileInfo.hIcon);
end;
end.