ender: TObject);
var
iFileHandle: Integer;
iFileLength: Integer;
iBytesRead: Integer;
Buffer: PChar;
i: Integer
begin
if OpenDialog1.Execute then
begin
try
iFileHandle := FileOpen(OpenDialog1.FileName, fmOpenRead);
iFileLength := FileSeek(iFileHandle,0,2);
FileSeek(iFileHandle,0,0);
Buffer := PChar(AllocMem(iFileLength + 1));
iBytesRead = FileRead(iFileHandle, Buffer, iFileLength);
FileClose(iFileHandle);
for i := 0 to iBytesRead-1 do
begin
StringGrid1.RowCount := StringGrid1.RowCount + 1;
StringGrid1.Cells[1,i+1] := Buffer[i];
StringGrid1.Cells[2,i+1] := IntToStr(Integer(Buffer[i]));
end;
finally
FreeMem(Buffer);
end;
end;
end;
##FileOpen, FileSeek, FileRead Example
-----------------------------------------------------------------------------
FileGetAttr 档案属性
-----------------------------------------------------------------------------
Unit SysUtils
函数原型 function FileGetAttr(const FileName: string): Integer;
说明 faReadOnly = $00000001;
faHidden = $00000002;
faSysFile = $00000004;
faVolumeID = $00000008;
faDirectory = $00000010;
faArchive = $00000020;
faAnyFile = $0000003F;
范例 procedure TForm1.Button1Click(Sender: TObject);
var
S: String;
begin
S:=IntToStr(FileGetAttr(''''c:\delphi_d\delphi_help1.txt''''));
Label1.Caption := S;
end;
-----------------------------------------------------------------------------
FileSetAttr 设定档案属性
-----------------------------------------------------------------------------
Unit SysUtils
函数原型 function FileSetAttr(const FileName: string; Attr: Integer):
Integer;
说明 设定成功传回0
-----------------------------------------------------------------------------
FindClose 结束FindFirst/FindNext
-----------------------------------------------------------------------------
procedure TForm1.Button1Click(Sender: TObject);
var
sr: TSearchRec;
FileAttrs: Integer;
begin
StringGrid1.RowCount := 1;
if CheckBox1.Checked then
FileAttrs := faReadOnly
else
FileAttrs := 0;
if CheckBox2.Checked then
FileAttrs := FileAttrs + faHidden;
if CheckBox3.Checked then
FileAttrs := FileAttrs + faSysFile;
if CheckBox4.Checked then
FileAttrs := FileAttrs + faVolumeID;
if CheckBox5.Checked then
FileAttrs := FileAttrs + faDirectory;
if CheckBox6.Checked then
FileAttrs := FileAttrs + faArchive;
if CheckBox7.Checked then
FileAttrs := FileAttrs + faAnyFile;
if FindFirst(Edit1.Text, FileAttrs, sr) = 0 then
begin
with StringGrid1 do
begin
if (sr.Attr and FileAttrs) = sr.Attr then
begin
Cells[1,RowCount-1] := sr.Name;
Cells[2,RowCount-1] := IntToStr(sr.Size);
end;
while FindNext(sr) = 0 do
begin
if (sr.Attr and FileAttrs) = sr.Attr then
begin
RowCount := RowCount + 1;
Cells[1, RowCount-1] := sr.Name;
Cells[2, RowCount-1] := IntToStr(sr.Size);
end;
end;
FindClose(sr);
end;
end;
end;
##FindFirst, FindNext, FindClose Example
-----------------------------------------------------------------------------
FindFirst 寻找第一个符合的档案.
-----------------------------------------------------------------------------
procedure TForm1.Button1Click(Sender: TObject);
var
sr: TSearchRec;
FileAttrs: Integer;
begin
StringGrid1.RowCount := 1;
if CheckBox1.Checked then
FileAttrs := faReadOnly
else
FileAttrs := 0;
if CheckBox2.Checked then
FileAttrs := FileAttrs + faHidden;
if CheckBox3.Checked then
FileAttrs := FileAttrs + faSysFile;
if CheckBox4.Checked then
FileAttrs := FileAttrs + faVolumeID;
if CheckBox5.Checked then
FileAttrs := FileAttrs + faDirectory;
if CheckBox6.Checked then
FileAttrs := FileAttrs + faArchive;
if CheckBox7.Checked then
FileAttrs := FileAttrs + faAnyFile;
if FindFirst(Edit1.Text, FileAttrs, sr) = 0 then
begin
with StringGrid1 do
begin
if (sr.Attr and FileAttrs) = sr.Attr then
begin
Cells[1,RowCount-1] := sr.Name;
Cells[2,RowCount-1] := IntToStr(sr.Size);
end;
while FindNext(sr) = 0 do
begin
if (sr.Attr and FileAttrs) = sr.Attr then
begin
RowCount := RowCount + 1;
Cells[1, RowCount-1] := sr.Name;
Cells[2, RowCount-1] := IntToStr(sr.Size);
end;
end;
FindClose(sr);
end;
end;
end;
##FindFirst, FindNext, FindClose Example
-----------------------------------------------------------------------------
FindNext 寻找下一个符合的档案.
-----------------------------------------------------------------------------
Unit SysUtils
函数原型 procedure FindClose(var F: TSearchRec);
函数原型 function FindFirst(const Path: string; Attr: Integer;
var F: TSearchRec): Integer;
函数原型 function FindNext(var F: TSearchRec): Integer;
说明 成功传回0
范例 var
SRec: TSearchRec;
procedure TForm1.SearchClick(Sender: TObject);
begin
FindFirst(''''c:\delphi\bin\*.*'''', faAnyFile, SRec);
Label1.Caption := SRec.Name + '''' is '''' + IntToStr(SRec.Size) +
'''' bytes in size'''';
end;
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