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Copy, Paste and Select All

Posted on 2007-03-20
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Medium Priority
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Last Modified: 2010-04-05
Dear Experts,

I have a procedure that select all text of a canvas when
the user select menu-item Select All and a procedure when
the user select the text with the mouse (rubberband rectan-
gle). And a procedure to Copy the text to the clipboard and
a procedure to paste text from Clipboard into the canvas.

These procedures works all fine, but now I have to programm
the menu-items in the procedure Edit1Click. Can someone
help me?

It has to be something like this:

if SocOpen := false then       (there is no connection)
                 Copy1.Enabled := False;
                 Paste1.Enabled := False;
                 SelectAll1.Enable := False;

If SocOpen := true then      (there is a connection)
                 SelectAll1.Enable :- True;
   
 If there is text in clipboard
                   Paste1.Enabled := True;
 If there is no text in clipboard
                   Paste1.Enabled := False;

 I believe this the code for it:
    Paste1.Enabled := Clipboard.HasFormat(CF_TEXT);

If there is a selection made by choosing menu-item Select All
or with the mouse:
 
Copy1. Enabled := True

If the user choose Copy then
Paste1.Enabled := True;

Can someone help me?

procedure TForm1.Edit1Click(Sender: TObject);
begin
    //
end;
(*-----------------------------------------------------*)
procedure TForm1.Copy1Click(Sender: TObject);
var
  i, j: integer;
  s: string;
begin
  s := '';
  for i := 1 to SCRROWS do
  begin
    for j := 1 to SCRCOLS do
      if (ScrBuf[i, j].Hilite = Char(chReverse)) and
        (ScrBuf[i, j].Data in ['A'..'Z', 'a'..'z', '0'..'9', ' ',
        ',', '!', '@', '#', '$', '%', '^', '&', '*', '(', '[', ']', ')',
          '<', '>', ';', ':', '=', '-', '.', '/', '\', '+', '"', '|']) then
        s := s + ScrBuf[i, j].Data;
    if s <> '' then s := s + #13#10;
  end;
  with Clipboard do
  begin
    open;
    astext := s;
    close;
  end;
end;
(*-----------------------------------------------------*)
procedure TForm1.Paste1Click(Sender: TObject);
var
  i, j, k: integer;
  ch: char;
  s: string;
begin
  with Clipboard do
  begin
    open;
    s := astext;
    close;
  end;
  k := 1;
  for i := 1 to SCRROWS do
    for j := 1 to SCRCOLS do begin
      if ((j > CsrCol) and (i >= CsrRow)) or (i > CsrRow) then begin
        if Length(s) >= k then begin
          ch := s[k];
          ScrBuf[i, j].data := ch;
          k := k + 1;
        end;
      end;
    end;
  ShowBuf;
end;
(*-----------------------------------------------------*)
procedure TForm1.SelectAll1Click(Sender: TObject);
var
  i, j: integer;
begin
  for i := 1 to SCRROWS do
    for j := 1 to SCRCOLS do
    begin
      if ScrBuf[i, j].Data = '' then
        ScrBuf[i, j].Data := ' ';
      ScrBuf[i, j].Color := Char(ccWhite);
      ScrBuf[i, j].Hilite := Char(chReverse);
    end;
  showbuf;
end;
(*-----------------------------------------------------*)

Peter Kiers

0
Comment
Question by:peterkiers
[X]
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4 Comments
 
LVL 1

Author Comment

by:peterkiers
ID: 18759242
I don't get any further than this:

procedure TForm1.Edit1Click(Sender: TObject);
begin
  if SocOpen = false then
  begin
  Copy1.Enabled := False;
  Paste1.Enabled := False;
  SelectAll1.Enabled := False
  end
  else begin
    Copy1.Enabled := True;
  Paste1.Enabled := Clipboard.HasFormat(CF_TEXT);
  SelectAll1.Enabled := True;
  end;
end;
0
 
LVL 1

Author Comment

by:peterkiers
ID: 18759287

procedure TForm1.Edit1Click(Sender: TObject);
var
  i,j : integer;
begin
  if SocOpen = false then
  begin
  Copy1.Enabled := False;
  Paste1.Enabled := False;
  SelectAll1.Enabled := False
  end
  else begin
   //here must be the line if the text is selected then...
    Copy1.Enabled := True
    else Copy1.Enabled := False;
  Paste1.Enabled := Clipboard.HasFormat(CF_TEXT);
  SelectAll1.Enabled := True;
  end;
end;
0
 
LVL 10

Accepted Solution

by:
dinilud earned 2000 total points
ID: 18762248
procedure TForm1.Edit1Click(Sender: TObject);

 function IsTextSelected:Boolean ;
 var i,j:Integer;
 begin
   Result:=False;
   for i := 1 to SCRROWS do
   begin
      for j := 1 to SCRCOLS do
        if (ScrBuf[i, j].Hilite = Char(chReverse)) and
          (ScrBuf[i, j].Data in ['A'..'Z', 'a'..'z', '0'..'9', ' ',
           ',', '!', '@', '#', '$', '%', '^', '&', '*', '(', '[', ']', ')',
            '<', '>', ';', ':', '=', '-', '.', '/', '\', '+', '"', '|']) then
        begin
           Result:=True;
           Break;
        end;
      if Result then Break;
   end;
 end;

begin
  if SocOpen = false then
  begin
    Copy1.Enabled := False;
    Paste1.Enabled := False;
    SelectAll1.Enabled := False
  end
  else
  begin
    Copy1.Enabled := IsTextSelected;
    Paste1.Enabled := Clipboard.HasFormat(CF_TEXT);
    SelectAll1.Enabled := True;
  end;
end;
0
 
LVL 1

Author Comment

by:peterkiers
ID: 18766426
Thank you for the help

Greetings,

Peter Kiers
0

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