Jak zapisać Itemy TTreeView?

Q: Jak zapisać Itemy TTreeView?

Posłuż się tym kodem: [crayon-662b553d752cc605340454/] Autor: Toster

Q: Jak zapisać Itemy TTreeView?

Posłuż się tym kodem: [crayon-662b553d752cc605340454/] Autor: Toster

Posłuż się tym kodem:

procedure WriteNodeData(const f:TFileStream; node:TTreeNode); 

var 

   temp,t: integer; 

   st: array[0..255] of char; 

begin 

   //zapis nazwy 

   temp := Length(node.Text); 

   f.Write(temp, sizeof(integer)); 

   for t := 0 to temp-1 do 

      st[t] := node.text[t+1]; 

   f.Write(st, temp); 

   //zapis dzieci 

   //ile dzieci 

   temp := node.Count; 

   f.Write(temp, sizeof(integer)); 

   for t := 0 to temp-1 do 

      WriteNodeData(f, node.Item[t]); 

end; 


procedure ReadNodeData(const f:TFileStream; node:TTreeNode); 

var 

   temp,t: integer; 

   st: array[0..255] of char; 

   s: string; 

   nod: TTreeNode; 

begin 


   //odczyt nazwy 

   f.Read( temp, sizeof(integer)); 

   f.read(st, temp); 

   s := ''; 

   for t := 0 to temp-1 do 

      s := s + st[t]; 


   nod := form1.TreeView1.Items.AddChild(node, s); 


   //ile dzieci 

   f.Read( temp, sizeof(integer)); 

   //zapis dzieci 

   for t := 0 to temp-1 do 

      ReadNodeData(f, nod); 

end; 


procedure TForm1.SaveData1Click(Sender: TObject); 

var 

   f: TFileStream; 

   t,y: integer; 

begin 

   f := TFileStream.Create('tree.dat',fmCreate); 

   t :=TreeView1.Items.Count; 

   y := 0; 

   for t := 0 to TreeView1.Items.Count -1 do 

      if TreeView1.items[t].Level =0 then inc(y); 


   f.Write(y,sizeof(integer)); 

   for t := 0 to TreeView1.Items.Count -1 do 

      if TreeView1.items[t].Level =0 then WriteNodeData(f, TreeView1.items[t]); 

   f.free; 

end; 


procedure TForm1.LoadData2Click(Sender: TObject); 

var 

   f: TFileStream; 

   t,y: integer; 

begin 

   TreeView1.Items.Clear; 

   f := TFileStream.Create('tree.dat',fmOpenRead); 

   f.read(y, sizeof(integer)); 

   for t := 0 to y-1 do 

      ReadNodeData(f, nil); 

   f.free; 

end;

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procedure WriteNodeData(const f:TFileStream; node:TTreeNode);

var

temp,t: integer;

st: array[0..255] of char;

begin

//zapis nazwy

temp := Length(node.Text);

f.Write(temp, sizeof(integer));

for t := 0 to temp-1 do

st[t] := node.text[t+1];

f.Write(st, temp);

//zapis dzieci

//ile dzieci

temp := node.Count;

f.Write(temp, sizeof(integer));

for t := 0 to temp-1 do

WriteNodeData(f, node.Item[t]);

end;

procedure ReadNodeData(const f:TFileStream; node:TTreeNode);

var

temp,t: integer;

st: array[0..255] of char;

s: string;

nod: TTreeNode;

begin

//odczyt nazwy

f.Read( temp, sizeof(integer));

f.read(st, temp);

s := '';

for t := 0 to temp-1 do

s := s + st[t];

nod := form1.TreeView1.Items.AddChild(node, s);

//ile dzieci

f.Read( temp, sizeof(integer));

//zapis dzieci

for t := 0 to temp-1 do

ReadNodeData(f, nod);

end;

procedure TForm1.SaveData1Click(Sender: TObject);

var

f: TFileStream;

t,y: integer;

begin

f := TFileStream.Create('tree.dat',fmCreate);

t :=TreeView1.Items.Count;

y := 0;

for t := 0 to TreeView1.Items.Count -1 do

if TreeView1.items[t].Level =0 then inc(y);

f.Write(y,sizeof(integer));

for t := 0 to TreeView1.Items.Count -1 do

if TreeView1.items[t].Level =0 then WriteNodeData(f, TreeView1.items[t]);

f.free;

end;

procedure TForm1.LoadData2Click(Sender: TObject);

var

f: TFileStream;

t,y: integer;

begin

TreeView1.Items.Clear;

f := TFileStream.Create('tree.dat',fmOpenRead);

f.read(y, sizeof(integer));

for t := 0 to y-1 do

ReadNodeData(f, nil);

f.free;

end;

Autor: Toster