Question

my application has 350 edit fields and all of them shall have an OnMouseMove event.
I have generated this code for all of them:

...

type

...    
procedure Edit1MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
procedure Edit2MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);    
...

implementation

{$R *.dfm}

...    
procedure TForm1.Edit1MouseMove(Sender: TObject; Shift: TShiftState; X,  
  Y: Integer);  
begin 
  Edit1.SetFocus(); 
end;

procedure TForm1.Edit2MouseMove(Sender: TObject; Shift: TShiftState; X,  
  Y: Integer);
begin 
  Edit2.SetFocus(); 
end;    
...

But I didn’t go to the object inspector to doubleclick OnMouseMove.
Is there a way to make this work without the object inspector.
Do you have an example line of code that would make it work for the first edit field?

Answer 1

You can create it once and assign it in code yourself:

type
  TForm1=class(TForm)
    procedure EditMouseMove(Sender: TObject; Shift: TShiftState;
      X, Y: Integer);
    procedure FormCreate(Sender: TObject);
    //...
  end;

implementation

procedure TForm1.EditMouseMove(Sender: TObject; Shift: TShiftState;
  X, Y: Integer);
var
  CurrEdit: TEdit;
begin
  if (Sender is TEdit) then
  begin
    CurrEdit := TEdit(Sender);
    // Do whatever with CurrEdit
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Edit1.OnMouseMove := EditMouseMove;
  Edit2.OnMouseMove := EditMouseMove;
  Edit3.OnMouseMove := EditMouseMove;
end;

If you want to assign the same one to every TEdit on the form:

procedure TForm1.FormCreate(Sender: TObject);
var
  i: Integer;
begin
  for i := 0 to ControlCount - 1 do
    if Controls[i] is TEdit then
      TEdit(Controls[i]).OnMouseMove := EditMouseMove;
end;