?? ugetcurrentpositionex.pas
字號:
unit UGetCurrentPositionEX;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls;
type
TForm1 = class(TForm)
Button1: TButton;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);
var
CurPosPt: TPoint; // holds the current position
begin
{set the background mode to transparent}
SetBkMode(Canvas.Handle, TRANSPARENT);
{display the first point}
MoveToEx(Canvas.Handle, 60, 20, NIL);
GetCurrentPositionEx(Canvas.Handle, @CurPosPt);
TextOut(Canvas.Handle, CurPosPt.x-55, CurPosPt.y, PChar('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)), Length('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)));
{display the second point}
LineTo(Canvas.Handle, 160, 20);
GetCurrentPositionEx(Canvas.Handle, @CurPosPt);
TextOut(Canvas.Handle, CurPosPt.x+2, CurPosPt.y, PChar('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)), Length('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)));
{display the third point}
LineTo(Canvas.Handle, 160, 120);
GetCurrentPositionEx(Canvas.Handle, @CurPosPt);
TextOut(Canvas.Handle, CurPosPt.x+2, CurPosPt.y, PChar('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)), Length('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)));
{display the fourth point}
LineTo(Canvas.Handle, 60, 120);
GetCurrentPositionEx(Canvas.Handle, @CurPosPt);
TextOut(Canvas.Handle, CurPosPt.x-55, CurPosPt.y, PChar('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)), Length('X: '+IntToStr(CurPosPt.X)+
' Y: '+IntToStr(CurPosPt.Y)));
{close the figure}
LineTo(Canvas.Handle, 60, 20);
end;
end.
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